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is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.19633">arXiv:2409.19633</a> <span> [<a href="https://arxiv.org/pdf/2409.19633">pdf</a>, <a href="https://arxiv.org/format/2409.19633">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for proton decay via $p\rightarrow{e^+畏}$ and $p\rightarrow{渭^+畏}$ with a 0.37 Mton-year exposure of Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Taniuchi%2C+N">N. Taniuchi</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+S">S. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Asaoka%2C+Y">Y. Asaoka</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a> , et al. (267 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.19633v1-abstract-short" style="display: inline;"> A search for proton decay into $e^+/渭^+$ and a $畏$ meson has been performed using data from a 0.373 Mton$\cdot$year exposure (6050.3 live days) of Super-Kamiokande. Compared to previous searches this work introduces an improved model of the intranuclear $畏$ interaction cross section, resulting in a factor of two reduction in uncertainties from this source and $\sim$10\% increase in signal efficien… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.19633v1-abstract-full').style.display = 'inline'; document.getElementById('2409.19633v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.19633v1-abstract-full" style="display: none;"> A search for proton decay into $e^+/渭^+$ and a $畏$ meson has been performed using data from a 0.373 Mton$\cdot$year exposure (6050.3 live days) of Super-Kamiokande. Compared to previous searches this work introduces an improved model of the intranuclear $畏$ interaction cross section, resulting in a factor of two reduction in uncertainties from this source and $\sim$10\% increase in signal efficiency. No significant data excess was found above the expected number of atmospheric neutrino background events resulting in no indication of proton decay into either mode. Lower limits on the proton partial lifetime of $1.4\times\mathrm{10^{34}~years}$ for $p\rightarrow e^+畏$ and $7.3\times\mathrm{10^{33}~years}$ for $p\rightarrow 渭^+畏$ at the 90$\%$ C.L. were set. These limits are around 1.5 times longer than our previous study and are the most stringent to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.19633v1-abstract-full').style.display = 'none'; document.getElementById('2409.19633v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.12488">arXiv:2405.12488</a> <span> [<a href="https://arxiv.org/pdf/2405.12488">pdf</a>, <a href="https://arxiv.org/format/2405.12488">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> First joint oscillation analysis of Super-Kamiokande atmospheric and T2K accelerator neutrino data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Super-Kamiokande"> Super-Kamiokande</a>, <a href="/search/hep-ex?searchtype=author&query=collaborations%2C+T">T2K collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+S">S. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Akhlaq%2C+N">N. Akhlaq</a>, <a href="/search/hep-ex?searchtype=author&query=Akutsu%2C+R">R. Akutsu</a>, <a href="/search/hep-ex?searchtype=author&query=Alarakia-Charles%2C+H">H. Alarakia-Charles</a>, <a href="/search/hep-ex?searchtype=author&query=Ali%2C+A">A. Ali</a>, <a href="/search/hep-ex?searchtype=author&query=Hakim%2C+Y+I+A">Y. I. Alj Hakim</a>, <a href="/search/hep-ex?searchtype=author&query=Monsalve%2C+S+A">S. Alonso Monsalve</a>, <a href="/search/hep-ex?searchtype=author&query=Amanai%2C+S">S. Amanai</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Anthony%2C+L+H+V">L. H. V. Anthony</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Apte%2C+K+A">K. A. Apte</a>, <a href="/search/hep-ex?searchtype=author&query=Arai%2C+T">T. Arai</a>, <a href="/search/hep-ex?searchtype=author&query=Arihara%2C+T">T. Arihara</a>, <a href="/search/hep-ex?searchtype=author&query=Arimoto%2C+S">S. Arimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Asada%2C+Y">Y. Asada</a>, <a href="/search/hep-ex?searchtype=author&query=Asaka%2C+R">R. Asaka</a>, <a href="/search/hep-ex?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/hep-ex?searchtype=author&query=Atkin%2C+E+T">E. T. Atkin</a>, <a href="/search/hep-ex?searchtype=author&query=Babu%2C+N">N. Babu</a> , et al. (524 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.12488v2-abstract-short" style="display: inline;"> The Super-Kamiokande and T2K collaborations present a joint measurement of neutrino oscillation parameters from their atmospheric and beam neutrino data. It uses a common interaction model for events overlapping in neutrino energy and correlated detector systematic uncertainties between the two datasets, which are found to be compatible. Using 3244.4 days of atmospheric data and a beam exposure of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12488v2-abstract-full').style.display = 'inline'; document.getElementById('2405.12488v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.12488v2-abstract-full" style="display: none;"> The Super-Kamiokande and T2K collaborations present a joint measurement of neutrino oscillation parameters from their atmospheric and beam neutrino data. It uses a common interaction model for events overlapping in neutrino energy and correlated detector systematic uncertainties between the two datasets, which are found to be compatible. Using 3244.4 days of atmospheric data and a beam exposure of $19.7(16.3) \times 10^{20}$ protons on target in (anti)neutrino mode, the analysis finds a 1.9$蟽$ exclusion of CP-conservation (defined as $J_{CP}=0$) and a preference for the normal mass ordering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12488v2-abstract-full').style.display = 'none'; document.getElementById('2405.12488v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.09920">arXiv:2404.09920</a> <span> [<a href="https://arxiv.org/pdf/2404.09920">pdf</a>, <a href="https://arxiv.org/format/2404.09920">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-4357/ad5fee">10.3847/1538-4357/ad5fee <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Combined Pre-Supernova Alert System with Kamland and Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KamLAND"> KamLAND</a>, <a href="/search/hep-ex?searchtype=author&query=Collaborations%2C+S">Super-Kamiokande Collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+S">Seisho Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Eizuka%2C+M">Minori Eizuka</a>, <a href="/search/hep-ex?searchtype=author&query=Futagi%2C+S">Sawako Futagi</a>, <a href="/search/hep-ex?searchtype=author&query=Gando%2C+A">Azusa Gando</a>, <a href="/search/hep-ex?searchtype=author&query=Gando%2C+Y">Yoshihito Gando</a>, <a href="/search/hep-ex?searchtype=author&query=Goto%2C+S">Shun Goto</a>, <a href="/search/hep-ex?searchtype=author&query=Hachiya%2C+T">Takahiko Hachiya</a>, <a href="/search/hep-ex?searchtype=author&query=Hata%2C+K">Kazumi Hata</a>, <a href="/search/hep-ex?searchtype=author&query=Ichimura%2C+K">Koichi Ichimura</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+S">Sei Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+H">Haruo Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Inoue%2C+K">Kunio Inoue</a>, <a href="/search/hep-ex?searchtype=author&query=Ishidoshiro%2C+K">Koji Ishidoshiro</a>, <a href="/search/hep-ex?searchtype=author&query=Kamei%2C+Y">Yuto Kamei</a>, <a href="/search/hep-ex?searchtype=author&query=Kawada%2C+N">Nanami Kawada</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Yasuhiro Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Koga%2C+M">Masayuki Koga</a>, <a href="/search/hep-ex?searchtype=author&query=Kurasawa%2C+M">Maho Kurasawa</a>, <a href="/search/hep-ex?searchtype=author&query=Mitsui%2C+T">Tadao Mitsui</a>, <a href="/search/hep-ex?searchtype=author&query=Miyake%2C+H">Haruhiko Miyake</a>, <a href="/search/hep-ex?searchtype=author&query=Morita%2C+D">Daisuke Morita</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+T">Takeshi Nakahata</a> , et al. (290 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.09920v3-abstract-short" style="display: inline;"> Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande via inverse beta decay interactions. Once these pre-supernova neutrinos are ob… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.09920v3-abstract-full').style.display = 'inline'; document.getElementById('2404.09920v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.09920v3-abstract-full" style="display: none;"> Preceding a core-collapse supernova, various processes produce an increasing amount of neutrinos of all flavors characterized by mounting energies from the interior of massive stars. Among them, the electron antineutrinos are potentially detectable by terrestrial neutrino experiments such as KamLAND and Super-Kamiokande via inverse beta decay interactions. Once these pre-supernova neutrinos are observed, an early warning of the upcoming core-collapse supernova can be provided. In light of this, KamLAND and Super-Kamiokande, both located in the Kamioka mine in Japan, have been monitoring pre-supernova neutrinos since 2015 and 2021, respectively. Recently, we performed a joint study between KamLAND and Super-Kamiokande on pre-supernova neutrino detection. A pre-supernova alert system combining the KamLAND detector and the Super-Kamiokande detector was developed and put into operation, which can provide a supernova alert to the astrophysics community. Fully leveraging the complementary properties of these two detectors, the combined alert is expected to resolve a pre-supernova neutrino signal from a 15 M$_{\odot}$ star within 510 pc of the Earth, at a significance level corresponding to a false alarm rate of no more than 1 per century. For a Betelgeuse-like model with optimistic parameters, it can provide early warnings up to 12 hours in advance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.09920v3-abstract-full').style.display = 'none'; document.getElementById('2404.09920v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Resubmitted to ApJ. 22 pages, 16 figures, for more information about the combined pre-supernova alert system, see https://www.lowbg.org/presnalarm/</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.08725">arXiv:2404.08725</a> <span> [<a href="https://arxiv.org/pdf/2404.08725">pdf</a>, <a href="https://arxiv.org/format/2404.08725">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptae128">10.1093/ptep/ptae128 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development of a data overflow protection system for Super-Kamiokande to maximize data from nearby supernovae </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Mori%2C+M">M. Mori</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a>, <a href="/search/hep-ex?searchtype=author&query=Shimizu%2C+K">K. Shimizu</a> , et al. (230 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.08725v2-abstract-short" style="display: inline;"> Neutrinos from very nearby supernovae, such as Betelgeuse, are expected to generate more than ten million events over 10\,s in Super-Kamokande (SK). At such large event rates, the buffers of the SK analog-to-digital conversion board (QBEE) will overflow, causing random loss of data that is critical for understanding the dynamics of the supernova explosion mechanism. In order to solve this problem,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08725v2-abstract-full').style.display = 'inline'; document.getElementById('2404.08725v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.08725v2-abstract-full" style="display: none;"> Neutrinos from very nearby supernovae, such as Betelgeuse, are expected to generate more than ten million events over 10\,s in Super-Kamokande (SK). At such large event rates, the buffers of the SK analog-to-digital conversion board (QBEE) will overflow, causing random loss of data that is critical for understanding the dynamics of the supernova explosion mechanism. In order to solve this problem, two new DAQ modules were developed to aid in the observation of very nearby supernovae. The first of these, the SN module, is designed to save only the number of hit PMTs during a supernova burst and the second, the Veto module, prescales the high rate neutrino events to prevent the QBEE from overflowing based on information from the SN module. In the event of a very nearby supernova, these modules allow SK to reconstruct the time evolution of the neutrino event rate from beginning to end using both QBEE and SN module data. This paper presents the development and testing of these modules together with an analysis of supernova-like data generated with a flashing laser diode. We demonstrate that the Veto module successfully prevents DAQ overflows for Betelgeuse-like supernovae as well as the long-term stability of the new modules. During normal running the Veto module is found to issue DAQ vetos a few times per month resulting in a total dead time less than 1\,ms, and does not influence ordinary operations. Additionally, using simulation data we find that supernovae closer than 800~pc will trigger Veto module resulting in a prescaling of the observed neutrino data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.08725v2-abstract-full').style.display = 'none'; document.getElementById('2404.08725v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 18 figures. Submitted to PTEP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.08619">arXiv:2403.08619</a> <span> [<a href="https://arxiv.org/pdf/2403.08619">pdf</a>, <a href="https://arxiv.org/format/2403.08619">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.082008">10.1103/PhysRevD.110.082008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the charge ratio and polarization of cosmic-ray muons with the Super-Kamiokande detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Kitagawa%2C+H">H. Kitagawa</a>, <a href="/search/hep-ex?searchtype=author&query=Tada%2C+T">T. Tada</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a> , et al. (231 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2403.08619v2-abstract-short" style="display: inline;"> We present the results of the charge ratio ($R$) and polarization ($P^渭_{0}$) measurements using the decay electron events collected from 2008 September to 2022 June by the Super-Kamiokande detector. Because of its underground location and long operation, we performed high precision measurements by accumulating cosmic-ray muons. We measured the muon charge ratio to be $R=1.32 \pm 0.02$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.08619v2-abstract-full').style.display = 'inline'; document.getElementById('2403.08619v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.08619v2-abstract-full" style="display: none;"> We present the results of the charge ratio ($R$) and polarization ($P^渭_{0}$) measurements using the decay electron events collected from 2008 September to 2022 June by the Super-Kamiokande detector. Because of its underground location and long operation, we performed high precision measurements by accumulating cosmic-ray muons. We measured the muon charge ratio to be $R=1.32 \pm 0.02$ $(\mathrm{stat.}{+}\mathrm{syst.})$ at $E_渭\cos 胃_{\mathrm{Zenith}}=0.7^{+0.3}_{-0.2}$ $\mathrm{TeV}$, where $E_渭$ is the muon energy and $胃_{\mathrm{Zenith}}$ is the zenith angle of incoming cosmic-ray muons. This result is consistent with the Honda flux model while this suggests a tension with the $蟺K$ model of $1.9蟽$. We also measured the muon polarization at the production location to be $P^渭_{0}=0.52 \pm 0.02$ $(\mathrm{stat.}{+}\mathrm{syst.})$ at the muon momentum of $0.9^{+0.6}_{-0.1}$ $\mathrm{TeV}/c$ at the surface of the mountain; this also suggests a tension with the Honda flux model of $1.5蟽$. This is the most precise measurement ever to experimentally determine the cosmic-ray muon polarization near $1~\mathrm{TeV}/c$. These measurement results are useful to improve the atmospheric neutrino simulations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.08619v2-abstract-full').style.display = 'none'; document.getElementById('2403.08619v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 pages, 45 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, 082008 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.12907">arXiv:2312.12907</a> <span> [<a href="https://arxiv.org/pdf/2312.12907">pdf</a>, <a href="https://arxiv.org/ps/2312.12907">ps</a>, <a href="https://arxiv.org/format/2312.12907">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.092001">10.1103/PhysRevD.109.092001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Solar neutrino measurements using the full data period of Super-Kamiokande-IV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Imaizumi%2C+S">S. Imaizumi</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Kato%2C+Y">Y. Kato</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Mochizuki%2C+T">T. Mochizuki</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nagao%2C+Y">Y. Nagao</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a> , et al. (305 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2312.12907v2-abstract-short" style="display: inline;"> An analysis of solar neutrino data from the fourth phase of Super-Kamiokande~(SK-IV) from October 2008 to May 2018 is performed and the results are presented. The observation time of the data set of SK-IV corresponds to $2970$~days and the total live time for all four phases is $5805$~days. For more precise solar neutrino measurements, several improvements are applied in this analysis: lowering th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.12907v2-abstract-full').style.display = 'inline'; document.getElementById('2312.12907v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.12907v2-abstract-full" style="display: none;"> An analysis of solar neutrino data from the fourth phase of Super-Kamiokande~(SK-IV) from October 2008 to May 2018 is performed and the results are presented. The observation time of the data set of SK-IV corresponds to $2970$~days and the total live time for all four phases is $5805$~days. For more precise solar neutrino measurements, several improvements are applied in this analysis: lowering the data acquisition threshold in May 2015, further reduction of the spallation background using neutron clustering events, precise energy reconstruction considering the time variation of the PMT gain. The observed number of solar neutrino events in $3.49$--$19.49$ MeV electron kinetic energy region during SK-IV is $65,443^{+390}_{-388}\,(\mathrm{stat.})\pm 925\,(\mathrm{syst.})$ events. Corresponding $\mathrm{^{8}B}$ solar neutrino flux is $(2.314 \pm 0.014\, \rm{(stat.)} \pm 0.040 \, \rm{(syst.)}) \times 10^{6}~\mathrm{cm^{-2}\,s^{-1}}$, assuming a pure electron-neutrino flavor component without neutrino oscillations. The flux combined with all SK phases up to SK-IV is $(2.336 \pm 0.011\, \rm{(stat.)} \pm 0.043 \, \rm{(syst.)}) \times 10^{6}~\mathrm{cm^{-2}\,s^{-1}}$. Based on the neutrino oscillation analysis from all solar experiments, including the SK $5805$~days data set, the best-fit neutrino oscillation parameters are $\rm{sin^{2} 胃_{12,\,solar}} = 0.306 \pm 0.013 $ and $螖m^{2}_{21,\,\mathrm{solar}} = (6.10^{+ 0.95}_{-0.81}) \times 10^{-5}~\rm{eV}^{2}$, with a deviation of about 1.5$蟽$ from the $螖m^{2}_{21}$ parameter obtained by KamLAND. The best-fit neutrino oscillation parameters obtained from all solar experiments and KamLAND are $\sin^{2} 胃_{12,\,\mathrm{global}} = 0.307 \pm 0.012 $ and $螖m^{2}_{21,\,\mathrm{global}} = (7.50^{+ 0.19}_{-0.18}) \times 10^{-5}~\rm{eV}^{2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.12907v2-abstract-full').style.display = 'none'; document.getElementById('2312.12907v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">47 pages, 61 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 092001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.05105">arXiv:2311.05105</a> <span> [<a href="https://arxiv.org/pdf/2311.05105">pdf</a>, <a href="https://arxiv.org/format/2311.05105">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.072014">10.1103/PhysRevD.109.072014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Atmospheric neutrino oscillation analysis with neutron tagging and an expanded fiducial volume in Super-Kamiokande I-V </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Wester%2C+T">T. Wester</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a> , et al. (212 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.05105v1-abstract-short" style="display: inline;"> We present a measurement of neutrino oscillation parameters with the Super-Kamiokande detector using atmospheric neutrinos from the complete pure-water SK I-V (April 1996-July 2020) data set, including events from an expanded fiducial volume. The data set corresponds to 6511.3 live days and an exposure of 484.2 kiloton-years. Measurements of the neutrino oscillation parameters $螖m^2_{32}$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.05105v1-abstract-full').style.display = 'inline'; document.getElementById('2311.05105v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.05105v1-abstract-full" style="display: none;"> We present a measurement of neutrino oscillation parameters with the Super-Kamiokande detector using atmospheric neutrinos from the complete pure-water SK I-V (April 1996-July 2020) data set, including events from an expanded fiducial volume. The data set corresponds to 6511.3 live days and an exposure of 484.2 kiloton-years. Measurements of the neutrino oscillation parameters $螖m^2_{32}$, $\sin^2胃_{23}$, $\sin^2 胃_{13}$, $未_{CP}$, and the preference for the neutrino mass ordering are presented with atmospheric neutrino data alone, and with constraints on $\sin^2 胃_{13}$ from reactor neutrino experiments. Our analysis including constraints on $\sin^2 胃_{13}$ favors the normal mass ordering at the 92.3% level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.05105v1-abstract-full').style.display = 'none'; document.getElementById('2311.05105v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 18 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.03842">arXiv:2311.03842</a> <span> [<a href="https://arxiv.org/pdf/2311.03842">pdf</a>, <a href="https://arxiv.org/ps/2311.03842">ps</a>, <a href="https://arxiv.org/format/2311.03842">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the neutrino-oxygen neutral-current quasielastic cross section using atmospheric neutrinos in the SK-Gd experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Sakai%2C+S">S. Sakai</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a>, <a href="/search/hep-ex?searchtype=author&query=Shimizu%2C+K">K. Shimizu</a> , et al. (211 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.03842v1-abstract-short" style="display: inline;"> We report the first measurement of the atmospheric neutrino-oxygen neutral-current quasielastic (NCQE) cross section in the gadolinium-loaded Super-Kamiokande (SK) water Cherenkov detector. In June 2020, SK began a new experimental phase, named SK-Gd, by loading 0.011% by mass of gadolinium into the ultrapure water of the SK detector. The introduction of gadolinium to ultrapure water has the effec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.03842v1-abstract-full').style.display = 'inline'; document.getElementById('2311.03842v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.03842v1-abstract-full" style="display: none;"> We report the first measurement of the atmospheric neutrino-oxygen neutral-current quasielastic (NCQE) cross section in the gadolinium-loaded Super-Kamiokande (SK) water Cherenkov detector. In June 2020, SK began a new experimental phase, named SK-Gd, by loading 0.011% by mass of gadolinium into the ultrapure water of the SK detector. The introduction of gadolinium to ultrapure water has the effect of improving the neutron-tagging efficiency. Using a 552.2 day data set from August 2020 to June 2022, we measure the NCQE cross section to be 0.74 $\pm$ 0.22(stat.) $^{+0.85}_{-0.15}$ (syst.) $\times$ 10$^{-38}$ cm$^{2}$/oxygen in the energy range from 160 MeV to 10 GeV, which is consistent with the atmospheric neutrino-flux-averaged theoretical NCQE cross section and the measurement in the SK pure-water phase within the uncertainties. Furthermore, we compare the models of the nucleon-nucleus interactions in water and find that the Binary Cascade model and the Liege Intranuclear Cascade model provide a somewhat better fit to the observed data than the Bertini Cascade model. Since the atmospheric neutrino-oxygen NCQE reactions are one of the main backgrounds in the search for diffuse supernova neutrino background (DSNB), these new results will contribute to future studies - and the potential discovery - of the DSNB in SK. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.03842v1-abstract-full').style.display = 'none'; document.getElementById('2311.03842v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.01159">arXiv:2311.01159</a> <span> [<a href="https://arxiv.org/pdf/2311.01159">pdf</a>, <a href="https://arxiv.org/format/2311.01159">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for Periodic Time Variations of the Solar $^8$B Neutrino Flux between 1996 and 2018 in Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a>, <a href="/search/hep-ex?searchtype=author&query=Shimizu%2C+K">K. Shimizu</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a> , et al. (211 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.01159v2-abstract-short" style="display: inline;"> We report a search for time variations of the solar $^8$B neutrino flux using 5804 live days of Super-Kamiokande data collected between May 31, 1996, and May 30, 2018. Super-Kamiokande measured the precise time of each solar neutrino interaction over 22 calendar years to search for solar neutrino flux modulations with unprecedented precision. Periodic modulations are searched for in a dataset comp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01159v2-abstract-full').style.display = 'inline'; document.getElementById('2311.01159v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.01159v2-abstract-full" style="display: none;"> We report a search for time variations of the solar $^8$B neutrino flux using 5804 live days of Super-Kamiokande data collected between May 31, 1996, and May 30, 2018. Super-Kamiokande measured the precise time of each solar neutrino interaction over 22 calendar years to search for solar neutrino flux modulations with unprecedented precision. Periodic modulations are searched for in a dataset comprising five-day interval solar neutrino flux measurements with a maximum likelihood method. We also applied the Lomb-Scargle method to this dataset to compare it with previous reports. The only significant modulation found is due to the elliptic orbit of the Earth around the Sun. The observed modulation is consistent with astronomical data: we measured an eccentricity of (1.53$\pm$0.35)\%, and a perihelion shift of ($-$1.5$\pm$13.5) days. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01159v2-abstract-full').style.display = 'none'; document.getElementById('2311.01159v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 5 figures, 2 tables, and data file: "sksolartimevariation5804d.txt" (the data file updated with additional 3 columns -- R^2 correction, upper-error, lower-error)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett 132, 241803 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.12614">arXiv:2310.12614</a> <span> [<a href="https://arxiv.org/pdf/2310.12614">pdf</a>, <a href="https://arxiv.org/format/2310.12614">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A search for $渭^+\to e^+纬$ with the first dataset of the MEG II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=MEG+II+collaboration"> MEG II collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Afanaciev%2C+K">K. Afanaciev</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">A. M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Baranov%2C+V">V. Baranov</a>, <a href="/search/hep-ex?searchtype=author&query=Benmansour%2C+H">H. Benmansour</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">M. Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">G. Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">P. W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">F. Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiappini%2C+M">M. Chiappini</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Corvaglia%2C+A">A. Corvaglia</a>, <a href="/search/hep-ex?searchtype=author&query=Cuna%2C+F">F. Cuna</a>, <a href="/search/hep-ex?searchtype=author&query=Maso%2C+G+D">G. Dal Maso</a>, <a href="/search/hep-ex?searchtype=author&query=De+Bari%2C+A">A. De Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">M. De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=Barusso%2C+L+F">L. Ferrari Barusso</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">M. Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gallucci%2C+G">G. Gallucci</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Gerritzen%2C+L">L. Gerritzen</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">F. Grancagnolo</a> , et al. (57 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.12614v3-abstract-short" style="display: inline;"> The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay $渭^+\to e^+纬$ from data taken in the first physics run in 2021. No excess of events over the expected background is observed, yielding an upper limit on the branching ratio of B($渭^+\to e^+纬$) < $7.5 \times 10^{-13}$ (90% C.L.). The combination of this result and the limit obtain… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.12614v3-abstract-full').style.display = 'inline'; document.getElementById('2310.12614v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.12614v3-abstract-full" style="display: none;"> The MEG II experiment, based at the Paul Scherrer Institut in Switzerland, reports the result of a search for the decay $渭^+\to e^+纬$ from data taken in the first physics run in 2021. No excess of events over the expected background is observed, yielding an upper limit on the branching ratio of B($渭^+\to e^+纬$) < $7.5 \times 10^{-13}$ (90% C.L.). The combination of this result and the limit obtained by MEG gives B($渭^+\to e^+纬$) < $3.1 \times 10^{-13}$ (90% C.L.), which is the most stringent limit to date. A ten-fold larger sample of data is being collected during the years 2022-2023, and data-taking will continue in the coming years. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.12614v3-abstract-full').style.display = 'none'; document.getElementById('2310.12614v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 6 figures. To be published in EPJC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.11902">arXiv:2310.11902</a> <span> [<a href="https://arxiv.org/pdf/2310.11902">pdf</a>, <a href="https://arxiv.org/format/2310.11902">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Operation and performance of MEG II detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=MEG+II+Collaboration"> MEG II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Afanaciev%2C+K">K. Afanaciev</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">A. M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Baranov%2C+V">V. Baranov</a>, <a href="/search/hep-ex?searchtype=author&query=Benmansour%2C+H">H. Benmansour</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">M. Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">G. Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">P. W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">F. Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiappini%2C+M">M. Chiappini</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Corvaglia%2C+A">A. Corvaglia</a>, <a href="/search/hep-ex?searchtype=author&query=Cuna%2C+F">F. Cuna</a>, <a href="/search/hep-ex?searchtype=author&query=Maso%2C+G+D">G. Dal Maso</a>, <a href="/search/hep-ex?searchtype=author&query=De+Bari%2C+A">A. De Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">M. De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=Barusso%2C+L+F">L. Ferrari Barusso</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">M. Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gallucci%2C+G">G. Gallucci</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Gerritzen%2C+L">L. Gerritzen</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">F. Grancagnolo</a> , et al. (60 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.11902v3-abstract-short" style="display: inline;"> The MEG II experiment, located at the Paul Scherrer Institut (PSI) in Switzerland, is the successor to the MEG experiment, which completed data taking in 2013. MEG II started fully operational data taking in 2021, with the goal of improving the sensitivity of the mu+ -> e+ gamma decay down to 6e-14 almost an order of magnitude better than the current limit. In this paper, we describe the operation… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11902v3-abstract-full').style.display = 'inline'; document.getElementById('2310.11902v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.11902v3-abstract-full" style="display: none;"> The MEG II experiment, located at the Paul Scherrer Institut (PSI) in Switzerland, is the successor to the MEG experiment, which completed data taking in 2013. MEG II started fully operational data taking in 2021, with the goal of improving the sensitivity of the mu+ -> e+ gamma decay down to 6e-14 almost an order of magnitude better than the current limit. In this paper, we describe the operation and performance of the experiment and give a new estimate of its sensitivity versus data acquisition time. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.11902v3-abstract-full').style.display = 'none'; document.getElementById('2310.11902v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">42 pages, 55 figures. Submitted to EPJC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.05135">arXiv:2305.05135</a> <span> [<a href="https://arxiv.org/pdf/2305.05135">pdf</a>, <a href="https://arxiv.org/format/2305.05135">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/2041-8213/acdc9e">10.3847/2041-8213/acdc9e <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for astrophysical electron antineutrinos in Super-Kamiokande with 0.01wt% gadolinium-loaded water </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Harada%2C+M">M. Harada</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a> , et al. (216 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.05135v2-abstract-short" style="display: inline;"> We report the first search result for the flux of astrophysical electron antineutrinos for energies O(10) MeV in the gadolinium-loaded Super-Kamiokande (SK) detector. In June 2020, gadolinium was introduced to the ultra-pure water of the SK detector in order to detect neutrons more efficiently. In this new experimental phase, SK-Gd, we can search for electron antineutrinos via inverse beta decay w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.05135v2-abstract-full').style.display = 'inline'; document.getElementById('2305.05135v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.05135v2-abstract-full" style="display: none;"> We report the first search result for the flux of astrophysical electron antineutrinos for energies O(10) MeV in the gadolinium-loaded Super-Kamiokande (SK) detector. In June 2020, gadolinium was introduced to the ultra-pure water of the SK detector in order to detect neutrons more efficiently. In this new experimental phase, SK-Gd, we can search for electron antineutrinos via inverse beta decay with efficient background rejection and higher signal efficiency thanks to the high efficiency of the neutron tagging technique. In this paper, we report the result for the initial stage of SK-Gd with a $22.5\times552$ $\rm kton\cdot day$ exposure at 0.01% Gd mass concentration. No significant excess over the expected background in the observed events is found for the neutrino energies below 31.3 MeV. Thus, the flux upper limits are placed at the 90% confidence level. The limits and sensitivities are already comparable with the previous SK result with pure-water ($22.5 \times 2970 \rm kton\cdot day$) owing to the enhanced neutron tagging. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.05135v2-abstract-full').style.display = 'none'; document.getElementById('2305.05135v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.10801">arXiv:2212.10801</a> <span> [<a href="https://arxiv.org/pdf/2212.10801">pdf</a>, <a href="https://arxiv.org/format/2212.10801">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of the cosmogenic neutron yield in Super-Kamiokande with gadolinium loaded water </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Shinoki%2C+M">M. Shinoki</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a> , et al. (217 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.10801v3-abstract-short" style="display: inline;"> Cosmic-ray muons that enter the Super-Kamiokande detector cause hadronic showers due to spallation in water, producing neutrons and radioactive isotopes. Those are a major background source for studies of MeV-scale neutrinos and searches for rare events. Since 2020, gadolinium was introduced in the ultra-pure water in the Super-Kamiokande detector to improve the detection efficiency of neutrons. I… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.10801v3-abstract-full').style.display = 'inline'; document.getElementById('2212.10801v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.10801v3-abstract-full" style="display: none;"> Cosmic-ray muons that enter the Super-Kamiokande detector cause hadronic showers due to spallation in water, producing neutrons and radioactive isotopes. Those are a major background source for studies of MeV-scale neutrinos and searches for rare events. Since 2020, gadolinium was introduced in the ultra-pure water in the Super-Kamiokande detector to improve the detection efficiency of neutrons. In this study, the cosmogenic neutron yield was measured using data acquired during the period after the gadolinium loading. The yield was found to be $(2.76 \pm 0.02\,\mathrm{(stat.) \pm 0.19\,\mathrm{(syst.)}}) \times 10^{-4}\,渭^{-1} \mathrm{g^{-1} cm^{2}}$ at 259 GeV of average muon energy at the Super-Kamiokande detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.10801v3-abstract-full').style.display = 'none'; document.getElementById('2212.10801v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 10 figures, 3 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.12948">arXiv:2210.12948</a> <span> [<a href="https://arxiv.org/pdf/2210.12948">pdf</a>, <a href="https://arxiv.org/format/2210.12948">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Space Physics">physics.space-ph</span> </div> </div> <p class="title is-5 mathjax"> Searching for neutrinos from solar flares across solar cycles 23 and 24 with the Super-Kamiokande detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Hosokawa%2C+K">K. Hosokawa</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+Y">Y. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nagao%2C+Y">Y. Nagao</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shimizu%2C+K">K. Shimizu</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a> , et al. (220 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.12948v2-abstract-short" style="display: inline;"> Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of solar flares. We searched using the Super-Kamiokande detector for neutrinos from solar flares that occurred during solar cycles $23$ and $24$, including the largest solar flare (X28.0) on November 4th, 2003. In order to minimize the background rate we… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.12948v2-abstract-full').style.display = 'inline'; document.getElementById('2210.12948v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.12948v2-abstract-full" style="display: none;"> Neutrinos associated with solar flares (solar-flare neutrinos) provide information on particle acceleration mechanisms during the impulsive phase of solar flares. We searched using the Super-Kamiokande detector for neutrinos from solar flares that occurred during solar cycles $23$ and $24$, including the largest solar flare (X28.0) on November 4th, 2003. In order to minimize the background rate we searched for neutrino interactions within narrow time windows coincident with $纬$-rays and soft X-rays recorded by satellites. In addition, we performed the first attempt to search for solar-flare neutrinos from solar flares on the invisible side of the Sun by using the emission time of coronal mass ejections (CMEs). By selecting twenty powerful solar flares above X5.0 on the visible side and eight CMEs whose emission speed exceeds $2000$ $\mathrm{km \, s^{-1}}$ on the invisible side from 1996 to 2018, we found two (six) neutrino events coincident with solar flares occurring on the visible (invisible) side of the Sun, with a typical background rate of $0.10$ ($0.62$) events per flare in the MeV-GeV energy range. No significant solar-flare neutrino signal above the estimated background rate was observed. As a result we set the following upper limit on neutrino fluence at the Earth $\mathit桅<1.1\times10^{6}$ $\mathrm{cm^{-2}}$ at the $90\%$ confidence level for the largest solar flare. The resulting fluence limits allow us to constrain some of the theoretical models for solar-flare neutrino emission. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.12948v2-abstract-full').style.display = 'none'; document.getElementById('2210.12948v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">36 pages, 18 figures, 9 tables (Figure 12 was replaced because it was incorrect in version 1.)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.14968">arXiv:2209.14968</a> <span> [<a href="https://arxiv.org/pdf/2209.14968">pdf</a>, <a href="https://arxiv.org/format/2209.14968">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.130.031802">10.1103/PhysRevLett.130.031802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Cosmic-ray Boosted Sub-GeV Dark Matter using Recoil Protons at Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+T+S">The Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a>, <a href="/search/hep-ex?searchtype=author&query=Shimizu%2C+K">K. Shimizu</a> , et al. (197 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2209.14968v4-abstract-short" style="display: inline;"> We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton$\times$years data collected at Super-Kamiokande experiment during the 1996-2018 period (SKI-IV phase). We searched for an excess of proton recoils above the atmospheric neutrino background from the vicinity of the Galactic Center. No such excess is observed, and limits are calculated for two reference models… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.14968v4-abstract-full').style.display = 'inline'; document.getElementById('2209.14968v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.14968v4-abstract-full" style="display: none;"> We report a search for cosmic-ray boosted dark matter with protons using the 0.37 megaton$\times$years data collected at Super-Kamiokande experiment during the 1996-2018 period (SKI-IV phase). We searched for an excess of proton recoils above the atmospheric neutrino background from the vicinity of the Galactic Center. No such excess is observed, and limits are calculated for two reference models of dark matter with either a constant interaction cross-section or through a scalar mediator. This is the first experimental search for boosted dark matter with hadrons using directional information. The results present the most stringent limits on cosmic-ray boosted dark matter and exclude the dark matter-nucleon elastic scattering cross-section between $10^{-33}\text{ cm}^{2}$ and $10^{-27}\text{ cm}^{2}$ for dark matter mass from 10 MeV/$c^2$ to 1 GeV/$c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.14968v4-abstract-full').style.display = 'none'; document.getElementById('2209.14968v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">With 1-page appendix. A bug was found in July 2023. This version is updated to match the erratum</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 130 (2023) 031802 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.08609">arXiv:2209.08609</a> <span> [<a href="https://arxiv.org/pdf/2209.08609">pdf</a>, <a href="https://arxiv.org/format/2209.08609">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/10/P10029">10.1088/1748-0221/17/10/P10029 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutron Tagging following Atmospheric Neutrino Events in a Water Cherenkov Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Imaizumi%2C+S">S. Imaizumi</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Kato%2C+Y">Y. Kato</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Mochizuki%2C+T">T. Mochizuki</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nagao%2C+Y">Y. Nagao</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Okada%2C+T">T. Okada</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a> , et al. (281 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2209.08609v2-abstract-short" style="display: inline;"> We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the tagging efficiency is estimated to be 9.0%. Measurement of the tagging efficiency with data from an Americium-Beryllium calibration agr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08609v2-abstract-full').style.display = 'inline'; document.getElementById('2209.08609v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.08609v2-abstract-full" style="display: none;"> We present the development of neutron-tagging techniques in Super-Kamiokande IV using a neural network analysis. The detection efficiency of neutron capture on hydrogen is estimated to be 26%, with a mis-tag rate of 0.016 per neutrino event. The uncertainty of the tagging efficiency is estimated to be 9.0%. Measurement of the tagging efficiency with data from an Americium-Beryllium calibration agrees with this value within 10%. The tagging procedure was performed on 3,244.4 days of SK-IV atmospheric neutrino data, identifying 18,091 neutrons in 26,473 neutrino events. The fitted neutron capture lifetime was measured as 218 \pm 9 渭s. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08609v2-abstract-full').style.display = 'none'; document.getElementById('2209.08609v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 17 P10029 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.13188">arXiv:2208.13188</a> <span> [<a href="https://arxiv.org/pdf/2208.13188">pdf</a>, <a href="https://arxiv.org/format/2208.13188">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for proton decay via $p\rightarrow 渭^+K^0$ in 0.37 megaton-years exposure of Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Matsumoto%2C+R">R. Matsumoto</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a> , et al. (208 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.13188v1-abstract-short" style="display: inline;"> We searched for proton decay via $p\to渭^+K^0$ in 0.37\,Mton$\cdot$years of data collected between 1996 and 2018 from the Super-Kamiokande water Cherenkov experiment. The selection criteria were defined separately for $K^0_S$ and $K^0_L$ channels. No significant event excess has been observed. As a result of this analysis, which extends the previous search by an additional 0.2\,Mton$\cdot$years of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.13188v1-abstract-full').style.display = 'inline'; document.getElementById('2208.13188v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.13188v1-abstract-full" style="display: none;"> We searched for proton decay via $p\to渭^+K^0$ in 0.37\,Mton$\cdot$years of data collected between 1996 and 2018 from the Super-Kamiokande water Cherenkov experiment. The selection criteria were defined separately for $K^0_S$ and $K^0_L$ channels. No significant event excess has been observed. As a result of this analysis, which extends the previous search by an additional 0.2\,Mton$\cdot$years of exposure and uses an improved event reconstruction, we set a lower limit of $3.6\times10^{33}$ years on the proton lifetime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.13188v1-abstract-full').style.display = 'none'; document.getElementById('2208.13188v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 11 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.01380">arXiv:2206.01380</a> <span> [<a href="https://arxiv.org/pdf/2206.01380">pdf</a>, <a href="https://arxiv.org/format/2206.01380">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-4357/ac8f41">10.3847/1538-4357/ac8f41 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for supernova bursts in Super-Kamiokande IV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=collaboration%2C+T+S">The Super-Kamiokande collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Mori%2C+M">M. Mori</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Imaizumi%2C+S">S. Imaizumi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nagao%2C+Y">Y. Nagao</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okada%2C+T">T. Okada</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a> , et al. (223 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.01380v1-abstract-short" style="display: inline;"> Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present work focuses on detecting more distant supernovae whose event rate may be too small to trigger in real time, but may be identified using an offline approach. The analysis of data collected from 2008 to 2018 found no eviden… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.01380v1-abstract-full').style.display = 'inline'; document.getElementById('2206.01380v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.01380v1-abstract-full" style="display: none;"> Super-Kamiokande has been searching for neutrino bursts characteristic of core-collapse supernovae continuously, in real time, since the start of operations in 1996. The present work focuses on detecting more distant supernovae whose event rate may be too small to trigger in real time, but may be identified using an offline approach. The analysis of data collected from 2008 to 2018 found no evidence of distant supernovae bursts. This establishes an upper limit of 0.29 year$^{-1}$ on the rate of core-collapse supernovae out to 100 kpc at 90% C.L.. For supernovae that fail to explode and collapse directly to black holes the limit reaches to 300 kpc. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.01380v1-abstract-full').style.display = 'none'; document.getElementById('2206.01380v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.09881">arXiv:2205.09881</a> <span> [<a href="https://arxiv.org/pdf/2205.09881">pdf</a>, <a href="https://arxiv.org/format/2205.09881">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-4357/ac7f9c">10.3847/1538-4357/ac7f9c <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Pre-Supernova Alert System for Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Machado%2C+L+N">L. N. Machado</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Hiraide%2C+K">K. Hiraide</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanemura%2C+Y">Y. Kanemura</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneshima%2C+R">R. Kaneshima</a>, <a href="/search/hep-ex?searchtype=author&query=Kashiwagi%2C+Y">Y. Kashiwagi</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Miki%2C+S">S. Miki</a>, <a href="/search/hep-ex?searchtype=author&query=Mine%2C+S">S. Mine</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Noguchi%2C+Y">Y. Noguchi</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiba%2C+H">H. Shiba</a> , et al. (202 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.09881v2-abstract-short" style="display: inline;"> In 2020, the Super-Kamiokande (SK) experiment moved to a new stage (SK-Gd) in which gadolinium (Gd) sulfate octahydrate was added to the water in the detector, enhancing the efficiency to detect thermal neutrons and consequently improving the sensitivity to low energy electron anti-neutrinos from inverse beta decay (IBD) interactions. SK-Gd has the potential to provide early alerts of incipient co… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.09881v2-abstract-full').style.display = 'inline'; document.getElementById('2205.09881v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.09881v2-abstract-full" style="display: none;"> In 2020, the Super-Kamiokande (SK) experiment moved to a new stage (SK-Gd) in which gadolinium (Gd) sulfate octahydrate was added to the water in the detector, enhancing the efficiency to detect thermal neutrons and consequently improving the sensitivity to low energy electron anti-neutrinos from inverse beta decay (IBD) interactions. SK-Gd has the potential to provide early alerts of incipient core-collapse supernovae through detection of electron anti-neutrinos from thermal and nuclear processes responsible for the cooling of massive stars before the gravitational collapse of their cores. These pre-supernova neutrinos emitted during the silicon burning phase can exceed the energy threshold for IBD reactions. We present the sensitivity of SK-Gd to pre-supernova stars and the techniques used for the development of a pre-supernova alarm based on the detection of these neutrinos in SK, as well as prospects for future SK-Gd phases with higher concentrations of Gd. For the current SK-Gd phase, high-confidence alerts for Betelgeuse could be issued up to nine hours in advance of the core-collapse itself. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.09881v2-abstract-full').style.display = 'none'; document.getElementById('2205.09881v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> The Astrophysical Journal, Volume 935, Number 1 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.10767">arXiv:2107.10767</a> <span> [<a href="https://arxiv.org/pdf/2107.10767">pdf</a>, <a href="https://arxiv.org/format/2107.10767">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/sym13091591">10.3390/sym13091591 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Search for $渭^+\to e^+ 纬$ with 10$^{-14}$ Sensitivity: the Upgrade of the MEG Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=The+MEG+II+Collaboration"> The MEG II Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">Alessandro M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Baranov%2C+V">Vladimir Baranov</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">Michele Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">Gianluigi Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">Paolo W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">Gianluca Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">Fabrizio Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiappini%2C+M">Marco Chiappini</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">Gianluigi Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Corvaglia%2C+A">Alessandro Corvaglia</a>, <a href="/search/hep-ex?searchtype=author&query=Cuna%2C+F">Federica Cuna</a>, <a href="/search/hep-ex?searchtype=author&query=Maso%2C+G+d">Giovanni dal Maso</a>, <a href="/search/hep-ex?searchtype=author&query=de+Bari%2C+A">Antonio de Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">Matteo De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">Marco Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">Luca Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gallucci%2C+G">Giovanni Gallucci</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">Flavio Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">Francesco Grancagnolo</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">Marco Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Grigoriev%2C+D+N">Dmitry N. Grigoriev</a>, <a href="/search/hep-ex?searchtype=author&query=Hildebrandt%2C+M">Malte Hildebrandt</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">Kei Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ignatov%2C+F">Fedor Ignatov</a> , et al. (45 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.10767v2-abstract-short" style="display: inline;"> The MEG experiment took data at the Paul Scherrer Institute in the years 2009--2013 to test the violation of the lepton flavour conservation law, which originates from an accidental symmetry that the Standard Model of elementary particle physics has, and published the most stringent limit on the charged lepton flavour violating decay $渭^+ \rightarrow {\rm e}^+ 纬$: BR($渭^+ \rightarrow {\rm e}^+ 纬$)… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.10767v2-abstract-full').style.display = 'inline'; document.getElementById('2107.10767v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.10767v2-abstract-full" style="display: none;"> The MEG experiment took data at the Paul Scherrer Institute in the years 2009--2013 to test the violation of the lepton flavour conservation law, which originates from an accidental symmetry that the Standard Model of elementary particle physics has, and published the most stringent limit on the charged lepton flavour violating decay $渭^+ \rightarrow {\rm e}^+ 纬$: BR($渭^+ \rightarrow {\rm e}^+ 纬$) $<4.2 \times 10^{-13}$ at 90% confidence level. The MEG detector has been upgraded in order to reach a sensitivity of $6\times10^{-14}$. The basic principle of MEG II is to achieve the highest possible sensitivity using the full muon beam intensity at the Paul Scherrer Institute ($7\times10^{7}$ muons/s) with an upgraded detector. The main improvements are better rate capability of all sub-detectors and improved resolutions while keeping the same detector concept. In this paper, we present the current status of the preparation, integration and commissioning of the MEG II detector in the recent engineering runs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.10767v2-abstract-full').style.display = 'none'; document.getElementById('2107.10767v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 4 figures. The version of acceptance for Symmetry</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Symmetry 2021, 13(9), 1591 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.11576">arXiv:2010.11576</a> <span> [<a href="https://arxiv.org/pdf/2010.11576">pdf</a>, <a href="https://arxiv.org/format/2010.11576">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/5.0034842">10.1063/5.0034842 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A photogrammetric method for target monitoring inside the MEG II detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a>, <a href="/search/hep-ex?searchtype=author&query=Hofer%2C+A">A. Hofer</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Meucci%2C+M">M. Meucci</a>, <a href="/search/hep-ex?searchtype=author&query=Milana%2C+S">S. Milana</a>, <a href="/search/hep-ex?searchtype=author&query=Pettinacci%2C+V">V. Pettinacci</a>, <a href="/search/hep-ex?searchtype=author&query=Renga%2C+F">F. Renga</a>, <a href="/search/hep-ex?searchtype=author&query=Voena%2C+C">C. Voena</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2010.11576v2-abstract-short" style="display: inline;"> An automatic target monitoring method based on photographs taken by a CMOS photo-camera has been developed for the MEG II detector. The technique could be adapted for other fixed-target experiments requiring good knowledge of their target position to avoid biases and systematic errors in measuring the trajectories of the outcoming particles. A CMOS-based, high resolution, high radiation tolerant a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.11576v2-abstract-full').style.display = 'inline'; document.getElementById('2010.11576v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.11576v2-abstract-full" style="display: none;"> An automatic target monitoring method based on photographs taken by a CMOS photo-camera has been developed for the MEG II detector. The technique could be adapted for other fixed-target experiments requiring good knowledge of their target position to avoid biases and systematic errors in measuring the trajectories of the outcoming particles. A CMOS-based, high resolution, high radiation tolerant and high magnetic field resistant photo-camera was mounted inside the MEG II detector at the Paul Scherrer Institute (Switzerland). MEG II is used to search for lepton flavour violation in muon decays. The photogrammetric method's challenges, affecting measurements of low momentum particles' tracks, are high magnetic field of the spectrometer, high radiation levels, tight space constraints, and the need to limit the material budget in the tracking volume. The camera is focused on dot pattern drawn on the thin MEG II target, about 1 m away from the detector endcaps where the photo-camera is placed. Target movements and deformations are monitored by comparing images of the dots taken at various times during the measurement. The images are acquired with a Raspberry board and analyzed using a custom software. Global alignment to the spectrometer is guaranteed by corner cubes placed on the target support. As a result, the target monitoring fulfils the needs of the experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.11576v2-abstract-full').style.display = 'none'; document.getElementById('2010.11576v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 14 figures. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Sci. Instrum. 92, 043707 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.05109">arXiv:2005.05109</a> <span> [<a href="https://arxiv.org/pdf/2005.05109">pdf</a>, <a href="https://arxiv.org/format/2005.05109">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.102.072002">10.1103/PhysRevD.102.072002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Indirect Search for Dark Matter from the Galactic Center and Halo with the Super-Kamiokande Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Imaizumi%2C+S">S. Imaizumi</a>, <a href="/search/hep-ex?searchtype=author&query=Ito%2C+H">H. Ito</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kataoka%2C+Y">Y. Kataoka</a>, <a href="/search/hep-ex?searchtype=author&query=Kato%2C+Y">Y. Kato</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Marti%2C+L">Ll. Marti</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Mochizuki%2C+T">T. Mochizuki</a>, <a href="/search/hep-ex?searchtype=author&query=Nagao%2C+Y">Y. Nagao</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+Y">Y. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Okada%2C+T">T. Okada</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</a> , et al. (249 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.05109v2-abstract-short" style="display: inline;"> We present a search for an excess of neutrino interactions due to dark matter in the form of Weakly Interacting Massive Particles (WIMPs) annihilating in the galactic center or halo based on the data set of Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to $谓\overline谓$,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05109v2-abstract-full').style.display = 'inline'; document.getElementById('2005.05109v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.05109v2-abstract-full" style="display: none;"> We present a search for an excess of neutrino interactions due to dark matter in the form of Weakly Interacting Massive Particles (WIMPs) annihilating in the galactic center or halo based on the data set of Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to $谓\overline谓$, $渭^+渭^-$, $b\overline{b}$, or $W^+W^-$. The excess is in comparison to atmospheric neutrino interactions which are modeled in detail and fit to data. Limits on the self-annihilation cross section $\langle 蟽_{A} V \rangle$ are derived for WIMP masses in the range 1 GeV to 10 TeV, reaching as low as $9.6 \times10^{-23}$ cm$^3$ s$^{-1}$ for 5 GeV WIMPs in $b\bar b$ mode and $1.2 \times10^{-24}$ cm$^3$ s$^{-1}$ for 1 GeV WIMPs in $谓\bar 谓$ mode. The obtained sensitivity of the Super-Kamiokande detector to WIMP masses below several tens of GeV is the best among similar indirect searches to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.05109v2-abstract-full').style.display = 'none'; document.getElementById('2005.05109v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 12 figures, Submitted to Phys. Rev. D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 072002 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.00339">arXiv:2005.00339</a> <span> [<a href="https://arxiv.org/pdf/2005.00339">pdf</a>, <a href="https://arxiv.org/format/2005.00339">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-020-8364-1">10.1140/epjc/s10052-020-8364-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for lepton flavour violating muon decay mediated by a new light particle in the MEG experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">A. M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+F">F. Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">M. Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">G. Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">P. W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">F. Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiappini%2C+M">M. Chiappini</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Chiri%2C+C">C. Chiri</a>, <a href="/search/hep-ex?searchtype=author&query=Corvaglia%2C+A">A. Corvaglia</a>, <a href="/search/hep-ex?searchtype=author&query=de+Bari%2C+A">A. de Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">M. De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">M. Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">F. Grancagnolo</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">M. Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Grigoriev%2C+D+N">D. N. Grigoriev</a>, <a href="/search/hep-ex?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a>, <a href="/search/hep-ex?searchtype=author&query=Hodge%2C+Z">Z. Hodge</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ignatov%2C+F">F. Ignatov</a>, <a href="/search/hep-ex?searchtype=author&query=Iwai%2C+R">R. Iwai</a>, <a href="/search/hep-ex?searchtype=author&query=Iwamoto%2C+T">T. Iwamoto</a> , et al. (46 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.00339v2-abstract-short" style="display: inline;"> We present the first direct search for lepton flavour violating muon decay mediated by a new light particle X, $渭^+ \to \mathrm{e}^+\mathrm{X}, \mathrm{X} \to 纬纬$. This search uses a dataset resulting from $7.5\times 10^{14}$ stopped muons collected by the MEG experiment at the Paul Scherrer Institut in the period 2009--2013. No significant excess is found in the mass region 20--45 MeV/c$^2$ for l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.00339v2-abstract-full').style.display = 'inline'; document.getElementById('2005.00339v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.00339v2-abstract-full" style="display: none;"> We present the first direct search for lepton flavour violating muon decay mediated by a new light particle X, $渭^+ \to \mathrm{e}^+\mathrm{X}, \mathrm{X} \to 纬纬$. This search uses a dataset resulting from $7.5\times 10^{14}$ stopped muons collected by the MEG experiment at the Paul Scherrer Institut in the period 2009--2013. No significant excess is found in the mass region 20--45 MeV/c$^2$ for lifetimes below 40 ps, and we set the most stringent branching ratio upper limits in the mass region of 20--40 MeV/c$^2$, down to $\mathcal{O}(10^{-11})$ at 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.00339v2-abstract-full').style.display = 'none'; document.getElementById('2005.00339v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1812.06912">arXiv:1812.06912</a> <span> [<a href="https://arxiv.org/pdf/1812.06912">pdf</a>, <a href="https://arxiv.org/format/1812.06912">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.99.052007">10.1103/PhysRevD.99.052007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Using world charged pion--nucleus scattering data to constrain an intranuclear cascade model </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Guerra%2C+E+S+P">E. S. Pinzon Guerra</a>, <a href="/search/hep-ex?searchtype=author&query=Wilkinson%2C+C">C. Wilkinson</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Calcutt%2C+J">J. Calcutt</a>, <a href="/search/hep-ex?searchtype=author&query=de+Perio%2C+P">P. de Perio</a>, <a href="/search/hep-ex?searchtype=author&query=Dolan%2C+S">S. Dolan</a>, <a href="/search/hep-ex?searchtype=author&query=Feusels%2C+T">T. Feusels</a>, <a href="/search/hep-ex?searchtype=author&query=Fiorentini%2C+G+A">G. A. Fiorentini</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Mahn%2C+K">K. Mahn</a>, <a href="/search/hep-ex?searchtype=author&query=McFarland%2C+K+S">K. S. McFarland</a>, <a href="/search/hep-ex?searchtype=author&query=Paolone%2C+V">V. Paolone</a>, <a href="/search/hep-ex?searchtype=author&query=Pickering%2C+L">L. Pickering</a>, <a href="/search/hep-ex?searchtype=author&query=Tacik%2C+R">R. Tacik</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H+A">H. A. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Terri%2C+R">R. Terri</a>, <a href="/search/hep-ex?searchtype=author&query=Wascko%2C+M+O">M. O. Wascko</a>, <a href="/search/hep-ex?searchtype=author&query=Wilking%2C+M+J">M. J. Wilking</a>, <a href="/search/hep-ex?searchtype=author&query=Wret%2C+C">C. Wret</a>, <a href="/search/hep-ex?searchtype=author&query=Yu%2C+M">M. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1812.06912v1-abstract-short" style="display: inline;"> The NEUT intranuclear cascade model is described and fit to a large body of \pipm--nucleus scattering data. Methods are developed to deal with deficiencies in the available historical data, and robust uncertainty estimates are produced. The results are compared to a variety of simulation packages, and the data itself. This work provides a method for tuning Final State Interaction models, which are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.06912v1-abstract-full').style.display = 'inline'; document.getElementById('1812.06912v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1812.06912v1-abstract-full" style="display: none;"> The NEUT intranuclear cascade model is described and fit to a large body of \pipm--nucleus scattering data. Methods are developed to deal with deficiencies in the available historical data, and robust uncertainty estimates are produced. The results are compared to a variety of simulation packages, and the data itself. This work provides a method for tuning Final State Interaction models, which are of particular interest to neutrino experiments that operate in the few-GeV energy region, and provides results which can be used directly by the T2K and Super-Kamiokande collaborations, for whom NEUT is the primary simulation package. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.06912v1-abstract-full').style.display = 'none'; document.getElementById('1812.06912v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 99, 052007 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.08701">arXiv:1809.08701</a> <span> [<a href="https://arxiv.org/pdf/1809.08701">pdf</a>, <a href="https://arxiv.org/format/1809.08701">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2019.02.010">10.1016/j.nima.2019.02.010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Large-Area MPPC with Enhanced VUV Sensitivity for Liquid Xenon Scintillation Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Iwamoto%2C+T">T. Iwamoto</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneko%2C+D">D. Kaneko</a>, <a href="/search/hep-ex?searchtype=author&query=Kobayashi%2C+S">S. Kobayashi</a>, <a href="/search/hep-ex?searchtype=author&query=Matsuzawa%2C+N">N. Matsuzawa</a>, <a href="/search/hep-ex?searchtype=author&query=Mori%2C+T">T. Mori</a>, <a href="/search/hep-ex?searchtype=author&query=Ogawa%2C+S">S. Ogawa</a>, <a href="/search/hep-ex?searchtype=author&query=Onda%2C+R">R. Onda</a>, <a href="/search/hep-ex?searchtype=author&query=Ootani%2C+W">W. Ootani</a>, <a href="/search/hep-ex?searchtype=author&query=Sawada%2C+R">R. Sawada</a>, <a href="/search/hep-ex?searchtype=author&query=Sato%2C+K">K. Sato</a>, <a href="/search/hep-ex?searchtype=author&query=Yamada%2C+R">R. Yamada</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.08701v2-abstract-short" style="display: inline;"> A large-area Multi-Pixel Photon Counter (MPPC) sensitive to vacuum ultra violet (VUV) light has been developed for the liquid xenon (LXe) scintillation detector of the MEG II experiment. The LXe detector is designed to detect the 52.8\,MeV photon from the lepton flavour violating decay $渭^+ \to \mathrm{e}^+ 纬$ and is based on $900\,\ell$ LXe with a highly granular scintillation readout by 4092 VUV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.08701v2-abstract-full').style.display = 'inline'; document.getElementById('1809.08701v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.08701v2-abstract-full" style="display: none;"> A large-area Multi-Pixel Photon Counter (MPPC) sensitive to vacuum ultra violet (VUV) light has been developed for the liquid xenon (LXe) scintillation detector of the MEG II experiment. The LXe detector is designed to detect the 52.8\,MeV photon from the lepton flavour violating decay $渭^+ \to \mathrm{e}^+ 纬$ and is based on $900\,\ell$ LXe with a highly granular scintillation readout by 4092 VUV-MPPCs with an active area of $139\,\mathrm{mm}^2$ each, totalling $0.57\,\mathrm{m}^2$. The VUV-MPPC shows an excellent performance in LXe, which includes a high photon detection efficiency (PDE) up to 21\% for the LXe scintillation light in the VUV range, a high gain, a low probability of the optical cross-talk and the after-pulsing, a low dark count rate and a good single photoelectron resolution. The large active area of the VUV-MPPC is formed by connecting four independent small VUV-MPPC chips in series to avoid the increase of the sensor capacitance and thus, to have a short pulse-decay-time, which is crucial for high rate experiments. Performance tests of 4180 VUV-MPPCs produced for the LXe detector were also carried out at room temperature prior to the installation to the detector and all of them with only a few exceptions were found to work properly. The design and performance of the VUV-MPPC are described in detail as well as the results from the performance tests at room temperature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.08701v2-abstract-full').style.display = 'none'; document.getElementById('1809.08701v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Revised version accepted for publication in Nucl. Instr. and Meth. A, 10 pages, 19 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1801.04688">arXiv:1801.04688</a> <span> [<a href="https://arxiv.org/pdf/1801.04688">pdf</a>, <a href="https://arxiv.org/format/1801.04688">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-018-5845-6">10.1140/epjc/s10052-018-5845-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The design of the MEG II experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">A. M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/hep-ex?searchtype=author&query=Bemporad%2C+C">C. Bemporad</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+F">F. Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">M. Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">G. Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">P. W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">F. Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiappini%2C+M">M. Chiappini</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Chiri%2C+C">C. Chiri</a>, <a href="/search/hep-ex?searchtype=author&query=Cocciolo%2C+G">G. Cocciolo</a>, <a href="/search/hep-ex?searchtype=author&query=Corvaglia%2C+A">A. Corvaglia</a>, <a href="/search/hep-ex?searchtype=author&query=de+Bari%2C+A">A. de Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">M. De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=D%27Onofrio%2C+A">A. D'Onofrio</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">M. Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Fujii%2C+Y">Y. Fujii</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">F. Grancagnolo</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">M. Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Grigoriev%2C+D+N">D. N. Grigoriev</a>, <a href="/search/hep-ex?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a> , et al. (55 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1801.04688v1-abstract-short" style="display: inline;"> The MEG experiment, designed to search for the mu+->e+ gamma decay at a 10^-13 sensitivity level, completed data taking in 2013. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of 6 x 10-14 for the branching ratio, a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.04688v1-abstract-full').style.display = 'inline'; document.getElementById('1801.04688v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1801.04688v1-abstract-full" style="display: none;"> The MEG experiment, designed to search for the mu+->e+ gamma decay at a 10^-13 sensitivity level, completed data taking in 2013. In order to increase the sensitivity reach of the experiment by an order of magnitude to the level of 6 x 10-14 for the branching ratio, a total upgrade, involving substantial changes to the experiment, has been undertaken, known as MEG II. We present both the motivation for the upgrade and a detailed overview of the design of the experiment and of the expected detector performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.04688v1-abstract-full').style.display = 'none'; document.getElementById('1801.04688v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">61 pages and 97 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 78 (380) (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.09126">arXiv:1710.09126</a> <span> [<a href="https://arxiv.org/pdf/1710.09126">pdf</a>, <a href="https://arxiv.org/format/1710.09126">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.97.072001">10.1103/PhysRevD.97.072001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kato%2C+Y">Y. Kato</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Marti%2C+L">Ll. Marti</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Okajima%2C+Y">Y. Okajima</a>, <a href="/search/hep-ex?searchtype=author&query=Orii%2C+A">A. Orii</a>, <a href="/search/hep-ex?searchtype=author&query=Pronost%2C+G">G. Pronost</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Sonoda%2C+Y">Y. Sonoda</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a> , et al. (157 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.09126v2-abstract-short" style="display: inline;"> An analysis of atmospheric neutrino data from all four run periods of \superk optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for $螖m^2_{32}$, $\sin^2 胃_{23}$, $\sin^2 胃_{13}$ and $未_{CP}$ are presented for normal neutrino mass hierarchy and inverted neutrino mass hierarchy hypotheses based on atmospheric neutrino data alone. Additional constraints from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.09126v2-abstract-full').style.display = 'inline'; document.getElementById('1710.09126v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.09126v2-abstract-full" style="display: none;"> An analysis of atmospheric neutrino data from all four run periods of \superk optimized for sensitivity to the neutrino mass hierarchy is presented. Confidence intervals for $螖m^2_{32}$, $\sin^2 胃_{23}$, $\sin^2 胃_{13}$ and $未_{CP}$ are presented for normal neutrino mass hierarchy and inverted neutrino mass hierarchy hypotheses based on atmospheric neutrino data alone. Additional constraints from reactor data on $胃_{13}$ and from published binned T2K data on muon neutrino disappearance and electron neutrino appearance are added to the atmospheric neutrino fit to give enhanced constraints on the above parameters. Over the range of parameters allowed at 90% confidence level, the normal mass hierarchy is favored by between 91.5% and 94.5% based on the combined result. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.09126v2-abstract-full').style.display = 'none'; document.getElementById('1710.09126v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 29 figures, final version submitted for publication</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 97, 072001 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1704.07467">arXiv:1704.07467</a> <span> [<a href="https://arxiv.org/pdf/1704.07467">pdf</a>, <a href="https://arxiv.org/format/1704.07467">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.97.032002">10.1103/PhysRevD.97.032002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the single $蟺^0$ production rate in neutral current neutrino interactions on water </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J">J. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Ashida%2C+Y">Y. Ashida</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Barry%2C+C">C. Barry</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a> , et al. (337 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1704.07467v2-abstract-short" style="display: inline;"> The single $蟺^0$ production rate in neutral current neutrino interactions on water in a neutrino beam with a peak neutrino energy of 0.6 GeV has been measured using the P脴D, one of the subdetectors of the T2K near detector. The production rate was measured for data taking periods when the P脴D contained water ($2.64\times{}10^{20}$ protons-on-target) and also periods without water (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.07467v2-abstract-full').style.display = 'inline'; document.getElementById('1704.07467v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1704.07467v2-abstract-full" style="display: none;"> The single $蟺^0$ production rate in neutral current neutrino interactions on water in a neutrino beam with a peak neutrino energy of 0.6 GeV has been measured using the P脴D, one of the subdetectors of the T2K near detector. The production rate was measured for data taking periods when the P脴D contained water ($2.64\times{}10^{20}$ protons-on-target) and also periods without water ($3.49 \times 10^{20}$ protons-on-target). A measurement of the neutral current single $蟺^0$ production rate on water is made using appropriate subtraction of the production rate with water in from the rate with water out of the target region. The subtraction analysis yields 106 $\pm$ 41 (stat.) $\pm$ 69 (sys.) signal events, which is consistent with the prediction of 157 events from the nominal simulation. The measured to expected ratio is 0.68 $\pm$ 0.26 (stat.) $\pm$ 0.44 (sys.) $\pm$ 0.12 (flux). The nominal simulation uses a flux integrated cross section of $7.63\times{}10^{-39}$ cm${}^2$ per nucleon with an average neutrino interaction energy of 1.3 GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.07467v2-abstract-full').style.display = 'none'; document.getElementById('1704.07467v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 April, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 97, 032002 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1703.01361">arXiv:1703.01361</a> <span> [<a href="https://arxiv.org/pdf/1703.01361">pdf</a>, <a href="https://arxiv.org/ps/1703.01361">ps</a>, <a href="https://arxiv.org/format/1703.01361">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.95.111101">10.1103/PhysRevD.95.111101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Lorentz and CPT violation using sidereal time dependence of neutrino flavor transitions over a short baseline </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Amey%2C+J">J. Amey</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Barbato%2C+F+C+T">F. C. T. Barbato</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Barry%2C+C">C. Barry</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a> , et al. (332 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1703.01361v2-abstract-short" style="display: inline;"> A class of extensions of the Standard Model allows Lorentz and CPT violations, which can be identified by the observation of sidereal modulations in the neutrino interaction rate. A search for such modulations was performed using the T2K on-axis near detector. Two complementary methods were used in this study, both of which resulted in no evidence of a signal. Limits on associated Lorentz and CPT… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.01361v2-abstract-full').style.display = 'inline'; document.getElementById('1703.01361v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1703.01361v2-abstract-full" style="display: none;"> A class of extensions of the Standard Model allows Lorentz and CPT violations, which can be identified by the observation of sidereal modulations in the neutrino interaction rate. A search for such modulations was performed using the T2K on-axis near detector. Two complementary methods were used in this study, both of which resulted in no evidence of a signal. Limits on associated Lorentz and CPT violating terms from the Standard Model Extension have been derived taking into account their correlations in this model for the first time. These results imply such symmetry violations are suppressed by a factor of more than $10^{20}$ at the GeV scale. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.01361v2-abstract-full').style.display = 'none'; document.getElementById('1703.01361v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 95, 111101 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1611.05612">arXiv:1611.05612</a> <span> [<a href="https://arxiv.org/pdf/1611.05612">pdf</a>, <a href="https://arxiv.org/ps/1611.05612">ps</a>, <a href="https://arxiv.org/format/1611.05612">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.95.045203">10.1103/PhysRevC.95.045203 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $蟽_{\mathrm{ABS}}$ and $蟽_{\mathrm{CX}}$ of $蟺^+$ on carbon by DUET </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Guerra%2C+E+S+P">E. S. Pinzon Guerra</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+C">C. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=de+Perio%2C+P">P. de Perio</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanazawa%2C+Y">Y. Kanazawa</a>, <a href="/search/hep-ex?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/hep-ex?searchtype=author&query=Kitching%2C+P">P. Kitching</a>, <a href="/search/hep-ex?searchtype=author&query=Mahn%2C+K">K. Mahn</a>, <a href="/search/hep-ex?searchtype=author&query=Nakaya%2C+T">T. Nakaya</a>, <a href="/search/hep-ex?searchtype=author&query=Nicholson%2C+M">M. Nicholson</a>, <a href="/search/hep-ex?searchtype=author&query=Olchanski%2C+K">K. Olchanski</a>, <a href="/search/hep-ex?searchtype=author&query=Rettie%2C+S">S. Rettie</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H+A">H. A. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tobayama%2C+S">S. Tobayama</a>, <a href="/search/hep-ex?searchtype=author&query=Wilking%2C+M+J">M. J. Wilking</a>, <a href="/search/hep-ex?searchtype=author&query=Yamauchi%2C+T">T. Yamauchi</a>, <a href="/search/hep-ex?searchtype=author&query=Yen%2C+S">S. Yen</a>, <a href="/search/hep-ex?searchtype=author&query=Yokoyama%2C+M">M. Yokoyama</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1611.05612v1-abstract-short" style="display: inline;"> The DUET Collaboration reports on the measurements of the absorption ($蟽_{\mathrm{ABS}}$) and charge exchange ($蟽_{\mathrm{CX}}$) cross sections of positively charged pions on carbon nuclei for the momentum range 201.6 MeV$/c$ to 295.1 MeV$/c$. The uncertainties on the absorption and charge exchange cross sections are $\sim$9.5\% and $\sim$18\%, respectively. The results are in good agreement with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.05612v1-abstract-full').style.display = 'inline'; document.getElementById('1611.05612v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1611.05612v1-abstract-full" style="display: none;"> The DUET Collaboration reports on the measurements of the absorption ($蟽_{\mathrm{ABS}}$) and charge exchange ($蟽_{\mathrm{CX}}$) cross sections of positively charged pions on carbon nuclei for the momentum range 201.6 MeV$/c$ to 295.1 MeV$/c$. The uncertainties on the absorption and charge exchange cross sections are $\sim$9.5\% and $\sim$18\%, respectively. The results are in good agreement with previous experiments. A covariance matrix correlating the 5 $蟽_{\mathrm{ABS}}$ and 5 $蟽_{\mathrm{CX}}$ measured data points is also reported <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.05612v1-abstract-full').style.display = 'none'; document.getElementById('1611.05612v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 15 figures. To be submitted to PRC</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 95, 045203 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.07538">arXiv:1606.07538</a> <span> [<a href="https://arxiv.org/pdf/1606.07538">pdf</a>, <a href="https://arxiv.org/ps/1606.07538">ps</a>, <a href="https://arxiv.org/format/1606.07538">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.94.052010">10.1103/PhysRevD.94.052010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Solar Neutrino Measurements in Super-Kamiokande-IV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+S">Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Marti%2C+L">Ll. Marti</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Orii%2C+A">A. Orii</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Sonoda%2C+Y">Y. Sonoda</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Takenaga%2C+Y">Y. Takenaga</a>, <a href="/search/hep-ex?searchtype=author&query=Tasaka%2C+S">S. Tasaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Ueno%2C+K">K. Ueno</a> , et al. (146 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1606.07538v1-abstract-short" style="display: inline;"> Upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy 8B solar neutrino interactions, with recoil electron kinetic energies as low as 3.49 MeV. Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.07538v1-abstract-full').style.display = 'inline'; document.getElementById('1606.07538v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.07538v1-abstract-full" style="display: none;"> Upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy 8B solar neutrino interactions, with recoil electron kinetic energies as low as 3.49 MeV. Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured solar neutrino flux is (2.308+-0.020(stat.) + 0.039-0.040(syst.)) x 106/(cm2sec) assuming no oscillations. The observed recoil electron energy spectrum is consistent with no distortions due to neutrino oscillations. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate in SK-IV results in a day/night asymmetry of (-3.6+-1.6(stat.)+-0.6(syst.))%. The SK-IV solar neutrino data determine the solar mixing angle as sin2 theta_12 = 0.327+0.026-0.031, all SK solar data (SK-I, SK-II, SK III and SKIV) measures this angle to be sin2 theta_12 = 0.334+0.027-0.023, the determined mass-squared splitting is Delta m2_21 = 4.8+1.5-0.8 x10-5 eV2. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.07538v1-abstract-full').style.display = 'none'; document.getElementById('1606.07538v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Physical Review D; 23 pages, 40 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.07964">arXiv:1605.07964</a> <span> [<a href="https://arxiv.org/pdf/1605.07964">pdf</a>, <a href="https://arxiv.org/format/1605.07964">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.95.012010">10.1103/PhysRevD.95.012010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First Measurement of the Muon Neutrino Charged Current Single Pion Production Cross Section on Water with the T2K Near Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Bienstock%2C+S">S. Bienstock</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/hep-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a> , et al. (318 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1605.07964v2-abstract-short" style="display: inline;"> The T2K off-axis near detector, ND280, is used to make the first differential cross section measurements of muon neutrino charged current single positive pion production on a water target at energies ${\sim}0.8$ GeV. The differential measurements are presented as a function of muon and pion kinematics, in the restricted phase-space defined by $p_{蟺^+}>200$MeV/c, $p_{渭^-}>200$MeV/c,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.07964v2-abstract-full').style.display = 'inline'; document.getElementById('1605.07964v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.07964v2-abstract-full" style="display: none;"> The T2K off-axis near detector, ND280, is used to make the first differential cross section measurements of muon neutrino charged current single positive pion production on a water target at energies ${\sim}0.8$ GeV. The differential measurements are presented as a function of muon and pion kinematics, in the restricted phase-space defined by $p_{蟺^+}>200$MeV/c, $p_{渭^-}>200$MeV/c, $\cos 胃_{蟺^+}>0.3$ and $\cos 胃_{渭^-}>0.3$. The total flux integrated $谓_渭$ charged current single positive pion production cross section on water in the restricted phase-space is measured to be $\langle蟽\rangle_蠁=4.25\pm0.48 (\mathrm{stat})\pm1.56 (\mathrm{syst})\times10^{-40} \mathrm{cm}^{2}/\mathrm{nucleon}$. The total cross section is consistent with the NEUT prediction ($5.03\times10^{-40} \mathrm{cm}^{2}/\mathrm{nucleon}$) and 2$蟽$ lower than the GENIE prediction ($7.68\times10^{-40} \mathrm{cm}^{2}/\mathrm{nucleon}$). The differential cross sections are in good agreement with the NEUT generator. The GENIE simulation reproduces well the shapes of the distributions, but over-estimates the overall cross section normalization. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.07964v2-abstract-full').style.display = 'none'; document.getElementById('1605.07964v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 95, 012010 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.04406">arXiv:1604.04406</a> <span> [<a href="https://arxiv.org/pdf/1604.04406">pdf</a>, <a href="https://arxiv.org/ps/1604.04406">ps</a>, <a href="https://arxiv.org/format/1604.04406">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.117.192501">10.1103/PhysRevLett.117.192501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of coherent $蟺^{+}$ production in low energy neutrino-Carbon scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+S">S. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/hep-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a> , et al. (314 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1604.04406v2-abstract-short" style="display: inline;"> We report the first measurement of the flux-averaged cross section for charged current coherent $蟺^{+}$ production on carbon for neutrino energies less than 1.5 GeV to a restricted final state phase space region in the T2K near detector, ND280. Comparisons are made with predictions from the Rein-Sehgal coherent production model and the model by Alvarez-Ruso {\it et al.}, the latter representing th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04406v2-abstract-full').style.display = 'inline'; document.getElementById('1604.04406v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.04406v2-abstract-full" style="display: none;"> We report the first measurement of the flux-averaged cross section for charged current coherent $蟺^{+}$ production on carbon for neutrino energies less than 1.5 GeV to a restricted final state phase space region in the T2K near detector, ND280. Comparisons are made with predictions from the Rein-Sehgal coherent production model and the model by Alvarez-Ruso {\it et al.}, the latter representing the first implementation of an instance of the new class of microscopic coherent models in a neutrino interaction Monte Carlo event generator. This results contradicts the null results reported by K2K and SciBooNE in a similar neutrino energy region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.04406v2-abstract-full').style.display = 'none'; document.getElementById('1604.04406v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 117, 192501 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.03652">arXiv:1602.03652</a> <span> [<a href="https://arxiv.org/pdf/1602.03652">pdf</a>, <a href="https://arxiv.org/format/1602.03652">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.93.112012">10.1103/PhysRevD.93.112012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of double-differential muon neutrino charged-current interactions on C$_8$H$_8$ without pions in the final state using the T2K off-axis beam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+collaboration"> T2K collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/hep-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/hep-ex?searchtype=author&query=Calland%2C+R+G">R. G. Calland</a> , et al. (303 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.03652v2-abstract-short" style="display: inline;"> We report the measurement of muon neutrino charged-current interactions on carbon without pions in the final state at the T2K beam energy using 5.734$\times10^{20}$ protons on target. For the first time the measurement is reported as a flux-integrated, double-differential cross-section in muon kinematic variables ($\cos胃_渭$, $p_渭$), without correcting for events where a pion is produced and then a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03652v2-abstract-full').style.display = 'inline'; document.getElementById('1602.03652v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.03652v2-abstract-full" style="display: none;"> We report the measurement of muon neutrino charged-current interactions on carbon without pions in the final state at the T2K beam energy using 5.734$\times10^{20}$ protons on target. For the first time the measurement is reported as a flux-integrated, double-differential cross-section in muon kinematic variables ($\cos胃_渭$, $p_渭$), without correcting for events where a pion is produced and then absorbed by final state interactions. Two analyses are performed with different selections, background evaluations and cross-section extraction methods to demonstrate the robustness of the results against biases due to model-dependent assumptions. The measurements compare favorably with recent models which include nucleon-nucleon correlations but, given the present precision, the measurement does not solve the degeneracy between different models. The data also agree with Monte Carlo simulations which use effective parameters that are tuned to external data to describe the nuclear effects. The total cross-section in the full phase space is $蟽= (0.417 \pm 0.047 \text{(syst)} \pm 0.005 \text{(stat)})\times 10^{-38} \text{cm}^2$ $\text{nucleon}^{-1}$ and the cross-section integrated in the region of phase space with largest efficiency and best signal-over-background ratio ($\cos胃_渭>0.6$ and $p_渭> 200$ MeV) is $蟽= (0.202 \pm 0.0359 \text{(syst)} \pm 0.0026 \text{(stat)}) \times 10^{-38} \text{cm}^2$ $\text{nucleon}^{-1}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03652v2-abstract-full').style.display = 'none'; document.getElementById('1602.03652v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">44 pages, 17 figures. Modifications from previous version: references fixed and style of Fig.11 improved for black and white printing</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 93, 112012 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.02495">arXiv:1512.02495</a> <span> [<a href="https://arxiv.org/pdf/1512.02495">pdf</a>, <a href="https://arxiv.org/format/1512.02495">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.116.181801">10.1103/PhysRevLett.116.181801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+collaboration"> T2K collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/hep-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a> , et al. (304 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1512.02495v3-abstract-short" style="display: inline;"> T2K reports its first measurements of the parameters governing the disappearance of $\bar谓_渭$ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic $\bar谓_渭$ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the $\bar谓_渭$ survival probability is expected to be minimal. Using a dat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.02495v3-abstract-full').style.display = 'inline'; document.getElementById('1512.02495v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.02495v3-abstract-full" style="display: none;"> T2K reports its first measurements of the parameters governing the disappearance of $\bar谓_渭$ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic $\bar谓_渭$ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the $\bar谓_渭$ survival probability is expected to be minimal. Using a dataset corresponding to $4.01 \times 10^{20}$ protons on target, $34$ fully contained $渭$-like events were observed. The best-fit oscillation parameters are $\sin^2 (\bar胃_{23}) = 0.45$ and $|螖\bar{m}^2_{32}| = 2.51 \times 10^{-3}$ eV$^2$ with 68% confidence intervals of 0.38 - 0.64 and 2.26 - 2.80 $\times 10^{-3}$ eV$^2$ respectively. These results are in agreement with existing antineutrino parameter measurements and also with the $谓_渭$ disappearance parameters measured by T2K. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.02495v3-abstract-full').style.display = 'none'; document.getElementById('1512.02495v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures, revision made following to referee comments, the link to the data release page was added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 116, 181801 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1510.04743">arXiv:1510.04743</a> <span> [<a href="https://arxiv.org/pdf/1510.04743">pdf</a>, <a href="https://arxiv.org/ps/1510.04743">ps</a>, <a href="https://arxiv.org/format/1510.04743">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-016-4047-3">10.1140/epjc/s10052-016-4047-3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Muon polarization in the MEG experiment: predictions and measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+A+M">A. M. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Bao%2C+Y">Y. Bao</a>, <a href="/search/hep-ex?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/hep-ex?searchtype=author&query=Bemporad%2C+C">C. Bemporad</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+F">F. Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Biasotti%2C+M">M. Biasotti</a>, <a href="/search/hep-ex?searchtype=author&query=Boca%2C+G">G. Boca</a>, <a href="/search/hep-ex?searchtype=author&query=Cattaneo%2C+P+W">P. W. Cattaneo</a>, <a href="/search/hep-ex?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/hep-ex?searchtype=author&query=Cei%2C+F">F. Cei</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarello%2C+G">G. Chiarello</a>, <a href="/search/hep-ex?searchtype=author&query=Chiri%2C+C">C. Chiri</a>, <a href="/search/hep-ex?searchtype=author&query=De+Bari%2C+A">A. De Bari</a>, <a href="/search/hep-ex?searchtype=author&query=De+Gerone%2C+M">M. De Gerone</a>, <a href="/search/hep-ex?searchtype=author&query=D%C3%93nofrio%2C+A">A. D脫nofrio</a>, <a href="/search/hep-ex?searchtype=author&query=Dussoni%2C+S">S. Dussoni</a>, <a href="/search/hep-ex?searchtype=author&query=Fujii%2C+Y">Y. Fujii</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Gatti%2C+F">F. Gatti</a>, <a href="/search/hep-ex?searchtype=author&query=Grancagnolo%2C+F">F. Grancagnolo</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">M. Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Graziosi%2C+A">A. Graziosi</a>, <a href="/search/hep-ex?searchtype=author&query=Grigoriev%2C+D+N">D. N. Grigoriev</a>, <a href="/search/hep-ex?searchtype=author&query=Haruyama%2C+T">T. Haruyama</a>, <a href="/search/hep-ex?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a> , et al. (45 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1510.04743v2-abstract-short" style="display: inline;"> The MEG experiment makes use of one of the world's most intense low energy muon beams, in order to search for the lepton flavour violating process $渭^{+} \rightarrow {\rm e}^{+} 纬$. We determined the residual beam polarization at the thin stopping target, by measuring the asymmetry of the angular distribution of Michel decay positrons as a function of energy. The initial muon beam polarization at… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.04743v2-abstract-full').style.display = 'inline'; document.getElementById('1510.04743v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1510.04743v2-abstract-full" style="display: none;"> The MEG experiment makes use of one of the world's most intense low energy muon beams, in order to search for the lepton flavour violating process $渭^{+} \rightarrow {\rm e}^{+} 纬$. We determined the residual beam polarization at the thin stopping target, by measuring the asymmetry of the angular distribution of Michel decay positrons as a function of energy. The initial muon beam polarization at the production is predicted to be $P_渭 = -1$ by the Standard Model (SM) with massless neutrinos. We estimated our residual muon polarization to be $P_渭 = -0.85 \pm 0.03 ~ {\rm (stat)} ~ { }^{+ 0.04}_{-0.05} ~ {\rm (syst)}$ at the stopping target, which is consistent with the SM predictions when the depolarizing effects occurring during the muon production, propagation and moderation in the target are taken into account. The knowledge of beam polarization is of fundamental importance in order to model the background of our ${\megsign}$ search induced by the muon radiative decay: $渭^{+} \rightarrow {\rm e}^{+} \bar谓_渭谓_{\rm e} 纬$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.04743v2-abstract-full').style.display = 'none'; document.getElementById('1510.04743v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2016) 76:223 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.06940">arXiv:1509.06940</a> <span> [<a href="https://arxiv.org/pdf/1509.06940">pdf</a>, <a href="https://arxiv.org/format/1509.06940">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.93.072002">10.1103/PhysRevD.93.072002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1-3 GeV with the T2K INGRID detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Antonova%2C+M">M. Antonova</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a>, <a href="/search/hep-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/hep-ex?searchtype=author&query=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Calland%2C+R+G">R. G. Calland</a> , et al. (296 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.06940v1-abstract-short" style="display: inline;"> We report a measurement of the $谓_渭$-nucleus inclusive charged current cross section (=$蟽^{cc}$) on iron using data from exposed to the J-PARC neutrino beam. The detector consists of 14 modules in total, which are spread over a range of off-axis angles from 0$^\circ$ to 1.1$^\circ$. The variation in the neutrino energy spectrum as a function of the off-axis angle, combined with event topology info… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.06940v1-abstract-full').style.display = 'inline'; document.getElementById('1509.06940v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.06940v1-abstract-full" style="display: none;"> We report a measurement of the $谓_渭$-nucleus inclusive charged current cross section (=$蟽^{cc}$) on iron using data from exposed to the J-PARC neutrino beam. The detector consists of 14 modules in total, which are spread over a range of off-axis angles from 0$^\circ$ to 1.1$^\circ$. The variation in the neutrino energy spectrum as a function of the off-axis angle, combined with event topology information, is used to calculate this cross section as a function of neutrino energy. The cross section is measured to be $蟽^{cc}(1.1\text{ GeV}) = 1.10 \pm 0.15$ $(10^{-38}\text{cm}^2/\text{nucleon})$, $蟽^{cc}(2.0\text{ GeV}) = 2.07 \pm 0.27$ $(10^{-38}\text{cm}^2/\text{nucleon})$, and $蟽^{cc}(3.3\text{ GeV}) = 2.29 \pm 0.45$ $(10^{-38}\text{cm}^2/\text{nucleon})$, at energies of 1.1, 2.0, and 3.3 GeV, respectively. These results are consistent with the cross section calculated by the neutrino interaction generators currently used by T2K. More importantly, the method described here opens up a new way to determine the energy dependence of neutrino-nucleus cross sections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.06940v1-abstract-full').style.display = 'none'; document.getElementById('1509.06940v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 93, 072002 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.05530">arXiv:1508.05530</a> <span> [<a href="https://arxiv.org/pdf/1508.05530">pdf</a>, <a href="https://arxiv.org/ps/1508.05530">ps</a>, <a href="https://arxiv.org/format/1508.05530">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.115.121803">10.1103/PhysRevLett.115.121803 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Takhistov%2C+V">V. Takhistov</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Orii%2C+A">A. Orii</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kametani%2C+I">I. Kametani</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneyuki%2C+K">K. Kaneyuki</a> , et al. (103 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1508.05530v2-abstract-short" style="display: inline;"> Search results for nucleon decays $p \rightarrow e^+X$, $p \rightarrow 渭^+X$, $n \rightarrow 谓纬$ (where $X$ is an invisible, massless particle) as well as dinucleon decays $np \rightarrow e^+谓$, $np \rightarrow 渭^+谓$ and $np \rightarrow 蟿^+谓$ in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton $\cdot$ years, a search for these decays yields a res… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.05530v2-abstract-full').style.display = 'inline'; document.getElementById('1508.05530v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.05530v2-abstract-full" style="display: none;"> Search results for nucleon decays $p \rightarrow e^+X$, $p \rightarrow 渭^+X$, $n \rightarrow 谓纬$ (where $X$ is an invisible, massless particle) as well as dinucleon decays $np \rightarrow e^+谓$, $np \rightarrow 渭^+谓$ and $np \rightarrow 蟿^+谓$ in the Super-Kamiokande experiment are presented. Using single-ring data from an exposure of 273.4 kton $\cdot$ years, a search for these decays yields a result consistent with no signal. Accordingly, lower limits on the partial lifetimes of $蟿_{p \rightarrow e^+X} > 7.9 \times 10^{32}$ years, $蟿_{p \rightarrow 渭^+X} > 4.1 \times 10^{32}$ years, $蟿_{n \rightarrow 谓纬} > 5.5 \times 10^{32}$ years, $蟿_{np \rightarrow e^+谓} > 2.6 \times 10^{32}$ years, $蟿_{np \rightarrow 渭^+谓} > 2.2 \times 10^{32}$ years and $蟿_{np \rightarrow 蟿^+谓} > 2.9 \times 10^{31}$ years at a $90 \% $ confidence level are obtained. Some of these searches are novel. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.05530v2-abstract-full').style.display = 'none'; document.getElementById('1508.05530v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 1 figure; minor corrections, length shortened, matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115, 121803 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.07783">arXiv:1506.07783</a> <span> [<a href="https://arxiv.org/pdf/1506.07783">pdf</a>, <a href="https://arxiv.org/ps/1506.07783">ps</a>, <a href="https://arxiv.org/format/1506.07783">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.92.035205">10.1103/PhysRevC.92.035205 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of absorption and charge exchange of $蟺^+$ on carbon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ieki%2C+K">K. Ieki</a>, <a href="/search/hep-ex?searchtype=author&query=Guerra%2C+E+S+P">E. S. Pinzon Guerra</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+C">C. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=de+Perio%2C+P">P. de Perio</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Kanazawa%2C+Y">Y. Kanazawa</a>, <a href="/search/hep-ex?searchtype=author&query=Kim%2C+J">J. Kim</a>, <a href="/search/hep-ex?searchtype=author&query=Kitching%2C+P">P. Kitching</a>, <a href="/search/hep-ex?searchtype=author&query=Mahn%2C+K">K. Mahn</a>, <a href="/search/hep-ex?searchtype=author&query=Nakaya%2C+T">T. Nakaya</a>, <a href="/search/hep-ex?searchtype=author&query=Nicholson%2C+M">M. Nicholson</a>, <a href="/search/hep-ex?searchtype=author&query=Olchanski%2C+K">K. Olchanski</a>, <a href="/search/hep-ex?searchtype=author&query=Rettie%2C+S">S. Rettie</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H+A">H. A. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Wilking%2C+M+J">M. J. Wilking</a>, <a href="/search/hep-ex?searchtype=author&query=Tobayama%2C+S">S. Tobayama</a>, <a href="/search/hep-ex?searchtype=author&query=Yamauchi%2C+T">T. Yamauchi</a>, <a href="/search/hep-ex?searchtype=author&query=Yen%2C+S">S. Yen</a>, <a href="/search/hep-ex?searchtype=author&query=Yokoyama%2C+M">M. Yokoyama</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1506.07783v1-abstract-short" style="display: inline;"> The combined cross section for absorption and charge exchange interactions of positively charged pions with carbon nuclei for the momentum range 200 MeV/c to 300 MeV/c have been measured with the DUET experiment at TRIUMF. The uncertainty is reduced by nearly half compared to previous experiments. This result will be a valuable input to existing models to constrain pion interactions with nuclei. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.07783v1-abstract-full" style="display: none;"> The combined cross section for absorption and charge exchange interactions of positively charged pions with carbon nuclei for the momentum range 200 MeV/c to 300 MeV/c have been measured with the DUET experiment at TRIUMF. The uncertainty is reduced by nearly half compared to previous experiments. This result will be a valuable input to existing models to constrain pion interactions with nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.07783v1-abstract-full').style.display = 'none'; document.getElementById('1506.07783v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 figures, 7 tables. To be submitted to PRC</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 92, 035205 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1504.01041">arXiv:1504.01041</a> <span> [<a href="https://arxiv.org/pdf/1504.01041">pdf</a>, <a href="https://arxiv.org/format/1504.01041">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.072009">10.1103/PhysRevD.91.072009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for dinucleon decay into pions at Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Gustafson%2C+J">J. Gustafson</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakajima%2C+T">T. Nakajima</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Orii%2C+A">A. Orii</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kametani%2C+I">I. Kametani</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneyuki%2C+K">K. Kaneyuki</a> , et al. (97 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1504.01041v1-abstract-short" style="display: inline;"> A search for dinucleon decay into pions with the Super-Kamiokande detector has been performed with an exposure of 282.1 kiloton-years. Dinucleon decay is a process that violates baryon number by two units. We present the first search for dinucleon decay to pions in a large water Cherenkov detector. The modes $^{16}$O$(pp) \rightarrow$ $^{14}$C$蟺^{+}蟺^{+}$, $^{16}$O$(pn) \rightarrow$ $^{14}$N… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.01041v1-abstract-full').style.display = 'inline'; document.getElementById('1504.01041v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1504.01041v1-abstract-full" style="display: none;"> A search for dinucleon decay into pions with the Super-Kamiokande detector has been performed with an exposure of 282.1 kiloton-years. Dinucleon decay is a process that violates baryon number by two units. We present the first search for dinucleon decay to pions in a large water Cherenkov detector. The modes $^{16}$O$(pp) \rightarrow$ $^{14}$C$蟺^{+}蟺^{+}$, $^{16}$O$(pn) \rightarrow$ $^{14}$N$蟺^{+}蟺^{0}$, and $^{16}$O$(nn) \rightarrow$ $^{14}$O$蟺^{0}蟺^{0}$ are investigated. No significant excess in the Super-Kamiokande data has been found, so a lower limit on the lifetime of the process per oxygen nucleus is determined. These limits are: $蟿_{pp\rightarrow蟺^{+}蟺^{+}} > 7.22 \times 10^{31}$ years, $蟿_{pn\rightarrow蟺^{+}蟺^{0}} > 1.70 \times 10^{32}$ years, and $蟿_{nn\rightarrow蟺^{0}蟺^{0}} > 4.04 \times 10^{32}$ years. The lower limits on each mode are about two orders of magnitude better than previous limits from searches for dinucleon decay in iron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.01041v1-abstract-full').style.display = 'none'; document.getElementById('1504.01041v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 April, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 17 figures. Accepted for publication in Physical Review D on March 30, 2015</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.08815">arXiv:1503.08815</a> <span> [<a href="https://arxiv.org/pdf/1503.08815">pdf</a>, <a href="https://arxiv.org/format/1503.08815">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.112010">10.1103/PhysRevD.91.112010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the Electron Neutrino Charged-current Interaction Rate on Water with the T2K ND280 pi-zero Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a> , et al. (322 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1503.08815v5-abstract-short" style="display: inline;"> This paper presents a measurement of the charged current interaction rate of the electron neutrino beam component of the beam above $1.5$~GeV using the large fiducial mass of the T2K $蟺^0$ detector. The predominant poriton of the $谓_e$ flux ($\sim$85 %) at these energies comes from kaon decays. The measured ratio of the observed beam interaction rate to the predicted rate in the detector with wate… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.08815v5-abstract-full').style.display = 'inline'; document.getElementById('1503.08815v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.08815v5-abstract-full" style="display: none;"> This paper presents a measurement of the charged current interaction rate of the electron neutrino beam component of the beam above $1.5$~GeV using the large fiducial mass of the T2K $蟺^0$ detector. The predominant poriton of the $谓_e$ flux ($\sim$85 %) at these energies comes from kaon decays. The measured ratio of the observed beam interaction rate to the predicted rate in the detector with water targets filled is 0.89 $\pm$ 0.08 (stat.) $\pm$ 0.11 (sys.), and with the water targets emptied is 0.90 $\pm$ 0.09 (stat.) $\pm$ 0.13 (sys.). The ratio obtained for the interactions on water only from an event subtraction method is 0.87 $\pm$ 0.33 (stat.) $\pm$ 0.21 (sys.). This is the first measurement of the interaction rate of electron neutrinos on water, which is particularly of interest to experiments with water Cherenkov detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.08815v5-abstract-full').style.display = 'none'; document.getElementById('1503.08815v5-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 6 figures, as accepted to PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 91 112010 2015 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.07452">arXiv:1503.07452</a> <span> [<a href="https://arxiv.org/pdf/1503.07452">pdf</a>, <a href="https://arxiv.org/format/1503.07452">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.112002">10.1103/PhysRevD.91.112002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $谓_渭$ charged current quasi-elastic cross-section on carbon with the T2K on-axis neutrino beam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a> , et al. (324 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1503.07452v2-abstract-short" style="display: inline;"> We report a measurement of the $谓_渭$ charged current quasi-elastic cross-sections on carbon in the T2K on-axis neutrino beam. The measured charged current quasi-elastic cross-sections on carbon at mean neutrino energies of 1.94 GeV and 0.93 GeV are $(11.95\pm 0.19(stat.)_{-1.47}^{+1.82} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.07452v2-abstract-full').style.display = 'inline'; document.getElementById('1503.07452v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.07452v2-abstract-full" style="display: none;"> We report a measurement of the $谓_渭$ charged current quasi-elastic cross-sections on carbon in the T2K on-axis neutrino beam. The measured charged current quasi-elastic cross-sections on carbon at mean neutrino energies of 1.94 GeV and 0.93 GeV are $(11.95\pm 0.19(stat.)_{-1.47}^{+1.82} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$ and $(10.64\pm 0.37(stat.)_{-1.65}^{+2.03} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$, respectively. These results agree well with the predictions of neutrino interaction models. In addition, we investigated the effects of the nuclear model and the multi-nucleon interaction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.07452v2-abstract-full').style.display = 'none'; document.getElementById('1503.07452v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 21 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D. 91, 112002 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.04858">arXiv:1503.04858</a> <span> [<a href="https://arxiv.org/pdf/1503.04858">pdf</a>, <a href="https://arxiv.org/ps/1503.04858">ps</a>, <a href="https://arxiv.org/format/1503.04858">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Search for neutrinos from annihilation of captured low-mass dark matter particles in the Sun by Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+T+S">The Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+2+T">2 T. Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kametani%2C+I">I. Kametani</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneyuki%2C+2+K">2 K. Kaneyuki</a>, <a href="/search/hep-ex?searchtype=author&query=Lee%2C+K+P">K. P. Lee</a> , et al. (89 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1503.04858v1-abstract-short" style="display: inline;"> Super-Kamiokande (SK) can search for weakly interacting massive particles (WIMPs) by detecting neutrinos produced from WIMP annihilations occurring inside the Sun. In this analysis, we include neutrino events with interaction vertices in the detector in addition to upward-going muons produced in the surrounding rock. Compared to the previous result, which used the upward-going muons only, the sign… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.04858v1-abstract-full').style.display = 'inline'; document.getElementById('1503.04858v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.04858v1-abstract-full" style="display: none;"> Super-Kamiokande (SK) can search for weakly interacting massive particles (WIMPs) by detecting neutrinos produced from WIMP annihilations occurring inside the Sun. In this analysis, we include neutrino events with interaction vertices in the detector in addition to upward-going muons produced in the surrounding rock. Compared to the previous result, which used the upward-going muons only, the signal acceptances for light (few-GeV/$c^2$ $\sim$ 200-GeV/$c^2$) WIMPs are significantly increased. We fit 3903 days of SK data to search for the contribution of neutrinos from WIMP annihilation in the Sun. We found no significant excess over expected atmospheric-neutrino background and the result is interpreted in terms of upper limits on WIMP-nucleon elastic scattering cross sections under different assumptions about the annihilation channel. We set the current best limits on the spin-dependent (SD) WIMP-proton cross section for WIMP masses below 200 GeV/$c^2$ (at 10 GeV/$c^2$, 1.49$\times 10^{-39}$ cm$^2$ for $蠂蠂\rightarrow b \bar{b}$ and 1.31$\times 10^{-40}$ cm$^2$ for $蠂蠂\rightarrow蟿^+蟿^-$ annihilation channels), also ruling out some fraction of WIMP candidates with spin-independent (SI) coupling in the few-GeV/$c^2$ mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.04858v1-abstract-full').style.display = 'none'; document.getElementById('1503.04858v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.01550">arXiv:1502.01550</a> <span> [<a href="https://arxiv.org/pdf/1502.01550">pdf</a>, <a href="https://arxiv.org/format/1502.01550">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.072010">10.1103/PhysRevD.91.072010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6E20 protons on target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akiri%2C+T">T. Akiri</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a> , et al. (324 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.01550v2-abstract-short" style="display: inline;"> We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: Normal Hierarchy: $\sin^2胃_{23}=0.514^{+0.055}_{-0.056}$ and $螖m^2_{32}=(2.51\pm0.10)\times 10^{-3}$ eV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01550v2-abstract-full').style.display = 'inline'; document.getElementById('1502.01550v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.01550v2-abstract-full" style="display: none;"> We report on measurements of neutrino oscillation using data from the T2K long-baseline neutrino experiment collected between 2010 and 2013. In an analysis of muon neutrino disappearance alone, we find the following estimates and 68% confidence intervals for the two possible mass hierarchies: Normal Hierarchy: $\sin^2胃_{23}=0.514^{+0.055}_{-0.056}$ and $螖m^2_{32}=(2.51\pm0.10)\times 10^{-3}$ eV$^2$/c$^4$ Inverted Hierarchy: $\sin^2胃_{23}=0.511\pm0.055$ and $螖m^2_{13}=(2.48\pm0.10)\times 10^{-3}$ eV$^2$/c$^4$ The analysis accounts for multi-nucleon mechanisms in neutrino interactions which were found to introduce negligible bias. We describe our first analyses that combine measurements of muon neutrino disappearance and electron neutrino appearance to estimate four oscillation parameters and the mass hierarchy. Frequentist and Bayesian intervals are presented for combinations of these parameters, with and without including recent reactor measurements. At 90% confidence level and including reactor measurements, we exclude the region: $未_{CP}=[0.15,0.83]蟺$ for normal hierarchy and $未_{CP}=[-0.08,1.09]蟺$ for inverted hierarchy. The T2K and reactor data weakly favor the normal hierarchy with a Bayes Factor of 2.2. The most probable values and 68% 1D credible intervals for the other oscillation parameters, when reactor data are included, are: $\sin^2胃_{23}=0.528^{+0.055}_{-0.038}$ and $|螖m^2_{32}|=(2.51\pm0.11)\times 10^{-3}$ eV$^2$/c$^4$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.01550v2-abstract-full').style.display = 'none'; document.getElementById('1502.01550v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">111 pages, 45 figures, submitted to Physical Review D. Minor revisions to text following referee comments</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 91, 072010 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1411.6264">arXiv:1411.6264</a> <span> [<a href="https://arxiv.org/pdf/1411.6264">pdf</a>, <a href="https://arxiv.org/ps/1411.6264">ps</a>, <a href="https://arxiv.org/format/1411.6264">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.92.112003">10.1103/PhysRevD.92.112003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the $谓_渭$ CCQE cross section on carbon with the ND280 detector at T2K </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=T2K+Collaboration"> T2K Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akiri%2C+T">T. Akiri</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bojechko%2C+C">C. Bojechko</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+S">S. Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a> , et al. (320 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1411.6264v2-abstract-short" style="display: inline;"> The Charged-Current Quasi-Elastic (CCQE) interaction, $谓_{l} + n \rightarrow l^{-} + p$, is the dominant CC process at $E_谓\sim 1$ GeV and contributes to the signal in accelerator-based long-baseline neutrino oscillation experiments operating at intermediate neutrino energies. This paper reports a measurement by the T2K experiment of the $谓_渭$ CCQE cross section on a carbon target with the off-axi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1411.6264v2-abstract-full').style.display = 'inline'; document.getElementById('1411.6264v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1411.6264v2-abstract-full" style="display: none;"> The Charged-Current Quasi-Elastic (CCQE) interaction, $谓_{l} + n \rightarrow l^{-} + p$, is the dominant CC process at $E_谓\sim 1$ GeV and contributes to the signal in accelerator-based long-baseline neutrino oscillation experiments operating at intermediate neutrino energies. This paper reports a measurement by the T2K experiment of the $谓_渭$ CCQE cross section on a carbon target with the off-axis detector based on the observed distribution of muon momentum ($p_渭$) and angle with respect to the incident neutrino beam ($胃_渭$). The flux-integrated CCQE cross section was measured to be $(0.83 \pm 0.12) \times 10^{-38}\textrm{ cm}^{2}$ in good agreement with NEUT MC value of ${0.88 \times 10^{-38}} \textrm{ cm}^{2}$. The energy dependence of the CCQE cross section is also reported. The axial mass, $M_A^{QE}$, of the dipole axial form factor was extracted assuming the Smith-Moniz CCQE model with a relativistic Fermi gas nuclear model. Using the absolute (shape-only) $p_渭cos胃_渭$ distribution, the effective $M_A^{QE}$ parameter was measured to be ${1.26^{+0.21}_{-0.18} \textrm{ GeV}/c^{2}}$ (${1.43^{+0.28}_{-0.22} \textrm{ GeV}/c^{2}}$). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1411.6264v2-abstract-full').style.display = 'none'; document.getElementById('1411.6264v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 92, 112003 2015 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.8811">arXiv:1410.8811</a> <span> [<a href="https://arxiv.org/pdf/1410.8811">pdf</a>, <a href="https://arxiv.org/format/1410.8811">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.051102">10.1103/PhysRevD.91.051102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for short baseline $谓_e$ disappearance with the T2K near detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akiri%2C+T">T. Akiri</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bojechko%2C+C">C. Bojechko</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a>, <a href="/search/hep-ex?searchtype=author&query=Brailsford%2C+D">D. Brailsford</a> , et al. (313 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1410.8811v1-abstract-short" style="display: inline;"> The T2K experiment has performed a search for $谓_e$ disappearance due to sterile neutrinos using $5.9 \times 10^{20}$ protons on target for a baseline of $280 m$ in a neutrino beam peaked at about $500 MeV$. A sample of 谓_e CC interactions in the off-axis near detector has been selected with a purity of 63\% and an efficiency of 26\%. The p-value for the null hypothesis is 0.085 and the excluded r… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.8811v1-abstract-full').style.display = 'inline'; document.getElementById('1410.8811v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.8811v1-abstract-full" style="display: none;"> The T2K experiment has performed a search for $谓_e$ disappearance due to sterile neutrinos using $5.9 \times 10^{20}$ protons on target for a baseline of $280 m$ in a neutrino beam peaked at about $500 MeV$. A sample of 谓_e CC interactions in the off-axis near detector has been selected with a purity of 63\% and an efficiency of 26\%. The p-value for the null hypothesis is 0.085 and the excluded region at 95\% CL is approximately $sin^2 2 胃_{ee} > 0.3$ for $螖m^2_{eff} > 7 eV^2 / c^4$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.8811v1-abstract-full').style.display = 'none'; document.getElementById('1410.8811v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 6 figures, submitted to PRD rapid communication</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.4267">arXiv:1410.4267</a> <span> [<a href="https://arxiv.org/pdf/1410.4267">pdf</a>, <a href="https://arxiv.org/format/1410.4267">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.052003">10.1103/PhysRevD.91.052003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Test of Lorentz invariance with atmospheric neutrinos </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+T+S">The Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Ueno%2C+K">K. Ueno</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Yokozawa%2C+T">T. Yokozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a> , et al. (104 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1410.4267v2-abstract-short" style="display: inline;"> A search for neutrino oscillations induced by Lorentz violation has been performed using 4,438 live-days of Super-Kamiokande atmospheric neutrino data. The Lorentz violation is included in addition to standard three-flavor oscillations using the non-perturbative Standard Model Extension (SME), allowing the use of the full range of neutrino path lengths, ranging from 15 to 12,800 km, and energies r… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.4267v2-abstract-full').style.display = 'inline'; document.getElementById('1410.4267v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.4267v2-abstract-full" style="display: none;"> A search for neutrino oscillations induced by Lorentz violation has been performed using 4,438 live-days of Super-Kamiokande atmospheric neutrino data. The Lorentz violation is included in addition to standard three-flavor oscillations using the non-perturbative Standard Model Extension (SME), allowing the use of the full range of neutrino path lengths, ranging from 15 to 12,800 km, and energies ranging from 100 MeV to more than 100 TeV in the search. No evidence of Lorentz violation was observed, so limits are set on the renormalizable isotropic SME coefficients in the $e渭$, $渭蟿$, and $e蟿$ sectors, improving the existing limits by up to seven orders of magnitude and setting limits for the first time in the neutrino $渭蟿$ sector of the SME. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.4267v2-abstract-full').style.display = 'none'; document.getElementById('1410.4267v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 10 figures, featured with a synopsis: http://physics.aps.org/synopsis-for/10.1103/PhysRevD.91.052003</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 91, 052003 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.2008">arXiv:1410.2008</a> <span> [<a href="https://arxiv.org/pdf/1410.2008">pdf</a>, <a href="https://arxiv.org/ps/1410.2008">ps</a>, <a href="https://arxiv.org/format/1410.2008">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.91.052019">10.1103/PhysRevD.91.052019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+T+S">The Super-Kamiokande Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Ueno%2C+K">K. Ueno</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Yokozawa%2C+T">T. Yokozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a> , et al. (104 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1410.2008v2-abstract-short" style="display: inline;"> We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV$^2$-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both these searches we assume that the sterile mass splitting is large, a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.2008v2-abstract-full').style.display = 'inline'; document.getElementById('1410.2008v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.2008v2-abstract-full" style="display: none;"> We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV$^2$-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both these searches we assume that the sterile mass splitting is large, allowing $\sin^2(螖m^2 L/4E)$ to be approximated as $0.5$, and we assume that there is no mixing between electron neutrinos and sterile neutrinos ($|U_{e4}|^2 = 0$). No evidence of sterile oscillations is seen and we limit $|U_{\mu4}|^2$ to less than 0.041 and $|U_{\tau4}|^2$ to less than 0.18 for $螖m^2 > 0.8$ eV$^2$ at the 90% C.L. in a 3+1 framework. The approximations that can be made with atmospheric neutrinos allow these limits to be easily applied to 3+N models, and we provide our results in a generic format to allow comparisons with other sterile neutrino models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.2008v2-abstract-full').style.display = 'none'; document.getElementById('1410.2008v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 12 figures, PRD Editor's Suggestion</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 91, 052019 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1409.7469">arXiv:1409.7469</a> <span> [<a href="https://arxiv.org/pdf/1409.7469">pdf</a>, <a href="https://arxiv.org/format/1409.7469">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1093/ptep/ptv031">10.1093/ptep/ptv031 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutrino Oscillation Physics Potential of the T2K Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Aihara%2C+H">H. Aihara</a>, <a href="/search/hep-ex?searchtype=author&query=Akiri%2C+T">T. Akiri</a>, <a href="/search/hep-ex?searchtype=author&query=Andreopoulos%2C+C">C. Andreopoulos</a>, <a href="/search/hep-ex?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/hep-ex?searchtype=author&query=Ariga%2C+A">A. Ariga</a>, <a href="/search/hep-ex?searchtype=author&query=Assylbekov%2C+S">S. Assylbekov</a>, <a href="/search/hep-ex?searchtype=author&query=Autiero%2C+D">D. Autiero</a>, <a href="/search/hep-ex?searchtype=author&query=Barbi%2C+M">M. Barbi</a>, <a href="/search/hep-ex?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/hep-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/hep-ex?searchtype=author&query=Bartet-Friburg%2C+P">P. Bartet-Friburg</a>, <a href="/search/hep-ex?searchtype=author&query=Bass%2C+M">M. Bass</a>, <a href="/search/hep-ex?searchtype=author&query=Batkiewicz%2C+M">M. Batkiewicz</a>, <a href="/search/hep-ex?searchtype=author&query=Bay%2C+F">F. Bay</a>, <a href="/search/hep-ex?searchtype=author&query=Berardi%2C+V">V. Berardi</a>, <a href="/search/hep-ex?searchtype=author&query=Berger%2C+B+E">B. E. Berger</a>, <a href="/search/hep-ex?searchtype=author&query=Berkman%2C+S">S. Berkman</a>, <a href="/search/hep-ex?searchtype=author&query=Bhadra%2C+S">S. Bhadra</a>, <a href="/search/hep-ex?searchtype=author&query=Blaszczyk%2C+F+d+M">F. d. M. Blaszczyk</a>, <a href="/search/hep-ex?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/hep-ex?searchtype=author&query=Bojechko%2C+C">C. Bojechko</a>, <a href="/search/hep-ex?searchtype=author&query=Bordoni%2C+S">S. Bordoni</a>, <a href="/search/hep-ex?searchtype=author&query=Boyd%2C+S+B">S. B. Boyd</a> , et al. (320 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1409.7469v2-abstract-short" style="display: inline;"> The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle $胃_{13}$ have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal $\sin^22胃_{23}$, the octant of $胃_{23}$, and the mass hierarchy, in addi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.7469v2-abstract-full').style.display = 'inline'; document.getElementById('1409.7469v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1409.7469v2-abstract-full" style="display: none;"> The observation of the recent electron neutrino appearance in a muon neutrino beam and the high-precision measurement of the mixing angle $胃_{13}$ have led to a re-evaluation of the physics potential of the T2K long-baseline neutrino oscillation experiment. Sensitivities are explored for CP violation in neutrinos, non-maximal $\sin^22胃_{23}$, the octant of $胃_{23}$, and the mass hierarchy, in addition to the measurements of $未_{CP}$, $\sin^2胃_{23}$, and $螖m^2_{32}$, for various combinations of $谓$-mode and $\bar谓$-mode data-taking. With an exposure of $7.8\times10^{21}$~protons-on-target, T2K can achieve 1-$蟽$ resolution of 0.050(0.054) on $\sin^2胃_{23}$ and $0.040(0.045)\times10^{-3}~\rm{eV}^2$ on $螖m^2_{32}$ for 100\%(50\%) neutrino beam mode running assuming $\sin^2胃_{23}=0.5$ and $螖m^2_{32} = 2.4\times10^{-3}$ eV$^2$. T2K will have sensitivity to the CP-violating phase $未_{\rm{CP}}$ at 90\% C.L. or better over a significant range. For example, if $\sin^22胃_{23}$ is maximal (i.e $胃_{23}$=$45^\circ$) the range is $-115^\circ<未_{\rm{CP}}<-60^\circ$ for normal hierarchy and $+50^\circ<未_{\rm{CP}}<+130^\circ$ for inverted hierarchy. When T2K data is combined with data from the NO$谓$A experiment, the region of oscillation parameter space where there is sensitivity to observe a non-zero $未_{CP}$ is substantially increased compared to if each experiment is analyzed alone. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.7469v2-abstract-full').style.display = 'none'; document.getElementById('1409.7469v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">40 pages, 27 figures, accepted by PTEP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1409.1947">arXiv:1409.1947</a> <span> [<a href="https://arxiv.org/pdf/1409.1947">pdf</a>, <a href="https://arxiv.org/ps/1409.1947">ps</a>, <a href="https://arxiv.org/format/1409.1947">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.113.101801">10.1103/PhysRevLett.113.101801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Trilepton Nucleon Decay via $p \rightarrow e^+ 谓谓$ and $p \rightarrow 渭^+ 谓谓$ in the Super-Kamiokande Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Takhistov%2C+V">V. Takhistov</a>, <a href="/search/hep-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/hep-ex?searchtype=author&query=Haga%2C+Y">Y. Haga</a>, <a href="/search/hep-ex?searchtype=author&query=Hayato%2C+Y">Y. Hayato</a>, <a href="/search/hep-ex?searchtype=author&query=Ikeda%2C+M">M. Ikeda</a>, <a href="/search/hep-ex?searchtype=author&query=Iyogi%2C+K">K. Iyogi</a>, <a href="/search/hep-ex?searchtype=author&query=Kameda%2C+J">J. Kameda</a>, <a href="/search/hep-ex?searchtype=author&query=Kishimoto%2C+Y">Y. Kishimoto</a>, <a href="/search/hep-ex?searchtype=author&query=Miura%2C+M">M. Miura</a>, <a href="/search/hep-ex?searchtype=author&query=Moriyama%2C+S">S. Moriyama</a>, <a href="/search/hep-ex?searchtype=author&query=Nakahata%2C+M">M. Nakahata</a>, <a href="/search/hep-ex?searchtype=author&query=Nakano%2C+Y">Y. Nakano</a>, <a href="/search/hep-ex?searchtype=author&query=Nakayama%2C+S">S. Nakayama</a>, <a href="/search/hep-ex?searchtype=author&query=Sekiya%2C+H">H. Sekiya</a>, <a href="/search/hep-ex?searchtype=author&query=Shiozawa%2C+M">M. Shiozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tomura%2C+T">T. Tomura</a>, <a href="/search/hep-ex?searchtype=author&query=Ueno%2C+K">K. Ueno</a>, <a href="/search/hep-ex?searchtype=author&query=Wendell%2C+R+A">R. A. Wendell</a>, <a href="/search/hep-ex?searchtype=author&query=Yokozawa%2C+T">T. Yokozawa</a>, <a href="/search/hep-ex?searchtype=author&query=Irvine%2C+T">T. Irvine</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kametani%2C+I">I. Kametani</a> , et al. (102 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1409.1947v1-abstract-short" style="display: inline;"> The trilepton nucleon decay modes $p \rightarrow e^+ 谓谓$ and $p \rightarrow 渭^+ 谓谓$ violate $|螖(B - L)|$ by two units. Using data from a 273.4 kiloton year exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of $蟿_{p \rightarrow e^+ 谓谓} > 1.7 \times 10^{32}$ years and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.1947v1-abstract-full').style.display = 'inline'; document.getElementById('1409.1947v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1409.1947v1-abstract-full" style="display: none;"> The trilepton nucleon decay modes $p \rightarrow e^+ 谓谓$ and $p \rightarrow 渭^+ 谓谓$ violate $|螖(B - L)|$ by two units. Using data from a 273.4 kiloton year exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of $蟿_{p \rightarrow e^+ 谓谓} > 1.7 \times 10^{32}$ years and $蟿_{p \rightarrow 渭^+ 谓谓} > 2.2 \times 10^{32}$ years at a $90 \% $ confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.1947v1-abstract-full').style.display = 'none'; document.getElementById('1409.1947v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 113, 101801 (2014) </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Ieki%2C+K&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul 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