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is-link">Go</button> </div> </div> </form> </div> </div> <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/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/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/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/2203.11772">arXiv:2203.11772</a> <span> [<a href="https://arxiv.org/pdf/2203.11772">pdf</a>, <a href="https://arxiv.org/format/2203.11772">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="Solar and Stellar Astrophysics">astro-ph.SR</span> </div> </div> <p class="title is-5 mathjax"> Testing Non-Standard Interactions Between Solar Neutrinos and Quarks with 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=Weatherly%2C+P">P. Weatherly</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=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=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=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=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=Okada%2C+T">T. Okada</a>, <a href="/search/hep-ex?searchtype=author&query=Okamoto%2C+K">K. Okamoto</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> , et al. (248 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="2203.11772v1-abstract-short" style="display: inline;"> Non-Standard Interactions (NSI) between neutrinos and matter affect the neutrino flavor oscillations. Due to the high matter density in the core of the Sun, solar neutrinos are suited to probe these interactions. Using the $277$ kton-yr exposure of Super-Kamiokande to $^{8}$B solar neutrinos, we search for the presence of NSI. Our data favors the presence of NSI with down quarks at 1.8$蟽$, and wit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.11772v1-abstract-full').style.display = 'inline'; document.getElementById('2203.11772v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.11772v1-abstract-full" style="display: none;"> Non-Standard Interactions (NSI) between neutrinos and matter affect the neutrino flavor oscillations. Due to the high matter density in the core of the Sun, solar neutrinos are suited to probe these interactions. Using the $277$ kton-yr exposure of Super-Kamiokande to $^{8}$B solar neutrinos, we search for the presence of NSI. Our data favors the presence of NSI with down quarks at 1.8$蟽$, and with up quarks at 1.6$蟽$, with the best fit NSI parameters being ($蔚_{11}^{d},蔚_{12}^{d}$) = (-3.3, -3.1) for $d$-quarks and ($蔚_{11}^{u},蔚_{12}^{u}$) = (-2.5, -3.1) for $u$-quarks. After combining with data from the Sudbury Neutrino Observatory and Borexino, the significance increases by 0.1$蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.11772v1-abstract-full').style.display = 'none'; document.getElementById('2203.11772v1-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> 22 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">Author: Pierce Weatherly 25 pages. To be submitted to Physical Review D</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.00092">arXiv:2112.00092</a> <span> [<a href="https://arxiv.org/pdf/2112.00092">pdf</a>, <a href="https://arxiv.org/format/2112.00092">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> <p class="title is-5 mathjax"> New Methods and Simulations for Cosmogenic Induced Spallation Removal 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=Locke%2C+S">S. Locke</a>, <a href="/search/hep-ex?searchtype=author&query=Coffani%2C+A">A. Coffani</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=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=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=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=Nakajima%2C+Y">Y. 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>, <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> , et al. (196 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="2112.00092v1-abstract-short" style="display: inline;"> Radioactivity induced by cosmic muon spallation is a dominant source of backgrounds for $\mathcal{O}(10)~$MeV neutrino interactions in water Cherenkov detectors. In particular, it is crucial to reduce backgrounds to measure the solar neutrino spectrum and find neutrino interactions from distant supernovae. In this paper we introduce new techniques to locate muon-induced hadronic showers and effici… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.00092v1-abstract-full').style.display = 'inline'; document.getElementById('2112.00092v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.00092v1-abstract-full" style="display: none;"> Radioactivity induced by cosmic muon spallation is a dominant source of backgrounds for $\mathcal{O}(10)~$MeV neutrino interactions in water Cherenkov detectors. In particular, it is crucial to reduce backgrounds to measure the solar neutrino spectrum and find neutrino interactions from distant supernovae. In this paper we introduce new techniques to locate muon-induced hadronic showers and efficiently reject spallation backgrounds. Applying these techniques to the solar neutrino analysis with an exposure of $2790\times22.5$~kton.day increases the signal efficiency by $12.6\%$, approximately corresponding to an additional year of detector running. Furthermore, we present the first spallation simulation at SK, where we model hadronic interactions using FLUKA. The agreement between the isotope yields and shower pattern in this simulation and in the data gives confidence in the accuracy of this simulation, and thus opens the door to use it to optimize muon spallation removal in new data with gadolinium-enhanced neutron capture detection. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.00092v1-abstract-full').style.display = 'none'; document.getElementById('2112.00092v1-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 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.11174">arXiv:2109.11174</a> <span> [<a href="https://arxiv.org/pdf/2109.11174">pdf</a>, <a href="https://arxiv.org/format/2109.11174">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/10.1103/PhysRevD.104.122002">10.1103/PhysRevD.104.122002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Diffuse Supernova Neutrino Background Search at 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=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=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=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=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=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>, <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=Suzuki%2C+Y">Y. Suzuki</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="2109.11174v2-abstract-short" style="display: inline;"> A new search for the diffuse supernova neutrino background (DSNB) flux has been conducted at Super-Kamiokande (SK), with a $22.5\times2970$-kton$\cdot$day exposure from its fourth operational phase IV. The new analysis improves on the existing background reduction techniques and systematic uncertainties and takes advantage of an improved neutron tagging algorithm to lower the energy threshold comp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.11174v2-abstract-full').style.display = 'inline'; document.getElementById('2109.11174v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.11174v2-abstract-full" style="display: none;"> A new search for the diffuse supernova neutrino background (DSNB) flux has been conducted at Super-Kamiokande (SK), with a $22.5\times2970$-kton$\cdot$day exposure from its fourth operational phase IV. The new analysis improves on the existing background reduction techniques and systematic uncertainties and takes advantage of an improved neutron tagging algorithm to lower the energy threshold compared to the previous phases of SK. This allows for setting the world's most stringent upper limit on the extraterrestrial $\bar谓_e$ flux, for neutrino energies below 31.3 MeV. The SK-IV results are combined with the ones from the first three phases of SK to perform a joint analysis using $22.5\times5823$ kton$\cdot$days of data. This analysis has the world's best sensitivity to the DSNB $\bar谓_e$ flux, comparable to the predictions from various models. For neutrino energies larger than 17.3 MeV, the new combined $90\%$ C.L. upper limits on the DSNB $\bar谓_e$ flux lie around $2.7$ cm$^{-2}$$\cdot$$\text{sec}^{-1}$, strongly disfavoring the most optimistic predictions. Finally, potentialities of the gadolinium phase of SK and the future Hyper-Kamiokande experiment are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.11174v2-abstract-full').style.display = 'none'; document.getElementById('2109.11174v2-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 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">42 pages, 37 figures, 14 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/2104.09196">arXiv:2104.09196</a> <span> [<a href="https://arxiv.org/pdf/2104.09196">pdf</a>, <a href="https://arxiv.org/format/2104.09196">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/ac0d5a">10.3847/1538-4357/ac0d5a <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for neutrinos in coincidence with gravitational wave events from the LIGO-Virgo O3a Observing Run 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+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=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=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=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=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=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>, <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=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a> , et al. (189 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="2104.09196v2-abstract-short" style="display: inline;"> The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-100$ MeV) and high-energy ($0.1-10^5$ GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significa… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.09196v2-abstract-full').style.display = 'inline'; document.getElementById('2104.09196v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.09196v2-abstract-full" style="display: none;"> The Super-Kamiokande detector can be used to search for neutrinos in time coincidence with gravitational waves detected by the LIGO-Virgo Collaboration (LVC). Both low-energy ($7-100$ MeV) and high-energy ($0.1-10^5$ GeV) samples were analyzed in order to cover a very wide neutrino spectrum. Follow-ups of 36 (out of 39) gravitational waves reported in the GWTC-2 catalog were examined; no significant excess above the background was observed, with 10 (24) observed neutrinos compared with 4.8 (25.0) expected events in the high-energy (low-energy) samples. A statistical approach was used to compute the significance of potential coincidences. For each observation, p-values were estimated using neutrino direction and LVC sky map ; the most significant event (GW190602_175927) is associated with a post-trial p-value of $7.8\%$ ($1.4蟽$). Additionally, flux limits were computed independently for each sample and by combining the samples. The energy emitted as neutrinos by the identified gravitational wave sources was constrained, both for given flavors and for all-flavors assuming equipartition between the different flavors, independently for each trigger and by combining sources of the same nature. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.09196v2-abstract-full').style.display = 'none'; document.getElementById('2104.09196v2-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 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">16 pages, 5 figures. v2: adding corrections from The Astrophysical Journal review</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 918, Number 2 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2101.03480">arXiv:2101.03480</a> <span> [<a href="https://arxiv.org/pdf/2101.03480">pdf</a>, <a href="https://arxiv.org/format/2101.03480">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> <p class="title is-5 mathjax"> Search for Tens of MeV Neutrinos associated with Gamma-Ray Bursts 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=Orii%2C+A">A. Orii</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=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=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=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=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>, <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> , et al. (195 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="2101.03480v2-abstract-short" style="display: inline;"> A search for neutrinos produced in coincidence with Gamma-Ray Bursts(GRB) was conducted with the Super-Kamiokande (SK) detector. Between December 2008 and March 2017, the Gamma-ray Coordinates Network recorded 2208 GRBs that occurred during normal SK operation. Several time windows around each GRB were used to search for coincident neutrino events. No statistically significant signal in excess of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.03480v2-abstract-full').style.display = 'inline'; document.getElementById('2101.03480v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2101.03480v2-abstract-full" style="display: none;"> A search for neutrinos produced in coincidence with Gamma-Ray Bursts(GRB) was conducted with the Super-Kamiokande (SK) detector. Between December 2008 and March 2017, the Gamma-ray Coordinates Network recorded 2208 GRBs that occurred during normal SK operation. Several time windows around each GRB were used to search for coincident neutrino events. No statistically significant signal in excess of the estimated backgrounds was detected. The $\bar谓_e$ fluence in the range from 8 MeV to 100 MeV in positron total energy for $\bar谓_e+p\rightarrow e^{+}+n$ was found to be less than $\rm 5.07\times10^5$ cm$^{-2}$ per GRB in 90\% C.L. Upper bounds on the fluence as a function of neutrino energy were also obtained. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2101.03480v2-abstract-full').style.display = 'none'; document.getElementById('2101.03480v2-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 June, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">29 pages, 16 figures, 5 tables, 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/2012.03807">arXiv:2012.03807</a> <span> [<a href="https://arxiv.org/pdf/2012.03807">pdf</a>, <a href="https://arxiv.org/ps/2012.03807">ps</a>, <a href="https://arxiv.org/format/2012.03807">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/10.1016/j.astropartphys.2022.102702">10.1016/j.astropartphys.2022.102702 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with 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=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=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=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=Nakajima%2C+Y">Y. 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>, <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=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a> , et al. (177 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="2012.03807v3-abstract-short" style="display: inline;"> Due to a very low production rate of electron anti-neutrinos ($\bar谓_e$) via nuclear fusion in the Sun, a flux of solar $\bar谓_e$ is unexpected. An appearance of $\bar谓_e$ in solar neutrino flux opens a new window for the new physics beyond the standard model. In particular, a spin-flavor precession process is expected to convert an electron neutrino into an electron anti-neutrino (… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.03807v3-abstract-full').style.display = 'inline'; document.getElementById('2012.03807v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.03807v3-abstract-full" style="display: none;"> Due to a very low production rate of electron anti-neutrinos ($\bar谓_e$) via nuclear fusion in the Sun, a flux of solar $\bar谓_e$ is unexpected. An appearance of $\bar谓_e$ in solar neutrino flux opens a new window for the new physics beyond the standard model. In particular, a spin-flavor precession process is expected to convert an electron neutrino into an electron anti-neutrino (${谓_e\to\bar谓_e}$) when neutrino has a finite magnetic moment. In this work, we have searched for solar $\bar谓_e$ in the Super-Kamiokande experiment, using neutron tagging to identify their inverse beta decay signature. We identified 78 $\bar谓_e$ candidates for neutrino energies of 9.3 to 17.3 MeV in 2970.1 live days with a fiducial volume of 22.5 kiloton water (183.0 kton$\cdot$year exposure). The energy spectrum has been consistent with background predictions and we thus derived a 90% confidence level upper limit of ${4.7\times10^{-4}}$ on the $谓_e\to\bar谓_e$ conversion probability in the Sun. We used this result to evaluate the sensitivity of future experiments, notably the Super-Kamiokande Gadolinium (SK-Gd) upgrade. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.03807v3-abstract-full').style.display = 'none'; document.getElementById('2012.03807v3-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">16 pages, 10 figures, 7 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astroparticle Physics 139 (2022) 102702 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.02607">arXiv:2012.02607</a> <span> [<a href="https://arxiv.org/pdf/2012.02607">pdf</a>, <a href="https://arxiv.org/ps/2012.02607">ps</a>, <a href="https://arxiv.org/format/2012.02607">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.103.012008">10.1103/PhysRevD.103.012008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutron-Antineutron Oscillation Search using a 0.37 Megaton$\cdot$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=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=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=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=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=Nakajima%2C+Y">Y. 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>, <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=Suzuki%2C+Y">Y. Suzuki</a>, <a href="/search/hep-ex?searchtype=author&query=Takeda%2C+A">A. Takeda</a> , et al. (176 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="2012.02607v1-abstract-short" style="display: inline;"> As a baryon number violating process with $螖B=2$, neutron-antineutron oscillation ($n\to\bar n$) provides a unique test of baryon number conservation. We have performed a search for $n\to\bar n$ oscillation with bound neutrons in Super-Kamiokande, with the full data set from its first four run periods, representing an exposure of 0.37~Mton-years. The search used a multivariate analysis trained on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.02607v1-abstract-full').style.display = 'inline'; document.getElementById('2012.02607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.02607v1-abstract-full" style="display: none;"> As a baryon number violating process with $螖B=2$, neutron-antineutron oscillation ($n\to\bar n$) provides a unique test of baryon number conservation. We have performed a search for $n\to\bar n$ oscillation with bound neutrons in Super-Kamiokande, with the full data set from its first four run periods, representing an exposure of 0.37~Mton-years. The search used a multivariate analysis trained on simulated $n\to\bar n$ events and atmospheric neutrino backgrounds and resulted in 11 candidate events with an expected background of 9.3 events. In the absence of statistically significant excess, we derived a lower limit on $\bar n$ appearance lifetime in $^{16}$O nuclei of $3.6\times{10}^{32}$ years and on the neutron-antineutron oscillation time of $蟿_{n\to\bar n} > 4.7\times10^{8}$~s at 90\% C.L.. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.02607v1-abstract-full').style.display = 'none'; document.getElementById('2012.02607v1-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 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 103, 012008 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2010.16098">arXiv:2010.16098</a> <span> [<a href="https://arxiv.org/pdf/2010.16098">pdf</a>, <a href="https://arxiv.org/format/2010.16098">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.102.112011">10.1103/PhysRevD.102.112011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for proton decay via $p\to e^+蟺^0$ and $p\to 渭^+蟺^0$ with an enlarged fiducial volume 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=Takenaka%2C+A">A. Takenaka</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=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=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=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>, <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> , et al. (191 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="2010.16098v2-abstract-short" style="display: inline;"> We have searched for proton decay via $p\to e^+蟺^0$ and $p\to 渭^+蟺^0$ modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton$\cdot$years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton$\cdot$year… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.16098v2-abstract-full').style.display = 'inline'; document.getElementById('2010.16098v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2010.16098v2-abstract-full" style="display: none;"> We have searched for proton decay via $p\to e^+蟺^0$ and $p\to 渭^+蟺^0$ modes with the enlarged fiducial volume data of Super-Kamiokande from April 1996 to May 2018, which corresponds to 450 kton$\cdot$years exposure. We have accumulated about 25% more livetime and enlarged the fiducial volume of the Super-Kamiokande detector from 22.5 kton to 27.2 kton for this analysis, so that 144 kton$\cdot$years of data, including 78 kton$\cdot$years of additional fiducial volume data, has been newly analyzed. No candidates have been found for $p\to e^+蟺^0$ and one candidate remains for $p\to 渭^+蟺^0$ in the conventional 22.5 kton fiducial volume and it is consistent with the atmospheric neutrino background prediction. We set lower limits on the partial lifetime for each of these modes: $蟿/B(p\to e^+蟺^0) > 2.4 \times 10^{34}$ years and $蟿/B(p\to 渭^+蟺^0) > 1.6 \times 10^{34}$ years at 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2010.16098v2-abstract-full').style.display = 'none'; document.getElementById('2010.16098v2-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 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 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">16 pages, 10 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 102, 112011 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.05109">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/2001.08011">arXiv:2001.08011</a> <span> [<a href="https://arxiv.org/pdf/2001.08011">pdf</a>, <a href="https://arxiv.org/format/2001.08011">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.101.052011">10.1103/PhysRevD.101.052011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for proton decay into three charged leptons in 0.37 megaton-years exposure of the 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=Tanaka%2C+M">M. Tanaka</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=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=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=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=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>, <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> , et al. (158 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="2001.08011v2-abstract-short" style="display: inline;"> A search for proton decay into three charged leptons has been performed by using 0.37$\,$Mton$\cdot$years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their anti-particles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.08011v2-abstract-full').style.display = 'inline'; document.getElementById('2001.08011v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.08011v2-abstract-full" style="display: none;"> A search for proton decay into three charged leptons has been performed by using 0.37$\,$Mton$\cdot$years of data collected in Super-Kamiokande. All possible combinations of electrons, muons and their anti-particles consistent with charge conservation were considered as decay modes. No significant excess of events has been found over the background, and lower limits on the proton lifetime divided by the branching ratio have been obtained. The limits range between $9.2\times10^{33}$ to $3.4\times10^{34}$ years at 90$\,$% confidence level, improving by more than an order of magnitude upon limits from previous experiments. A first limit has been set for the $p\rightarrow渭^-e^+e^+$ mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.08011v2-abstract-full').style.display = 'none'; document.getElementById('2001.08011v2-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 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 052011 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.05281">arXiv:1901.05281</a> <span> [<a href="https://arxiv.org/pdf/1901.05281">pdf</a>, <a href="https://arxiv.org/ps/1901.05281">ps</a>, <a href="https://arxiv.org/format/1901.05281">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.99.032005">10.1103/PhysRevD.99.032005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of neutrino-oxygen neutral-current quasi-elastic cross section using atmospheric neutrinos at 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=Wan%2C+L">L. Wan</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=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=Mochizuki%2C+T">T. Mochizuki</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=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>, <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> , et al. (143 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="1901.05281v1-abstract-short" style="display: inline;"> Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasi-elastic (NCQE) scattering off nucleons inside $^{16}$O nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-K… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.05281v1-abstract-full').style.display = 'inline'; document.getElementById('1901.05281v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.05281v1-abstract-full" style="display: none;"> Neutral current (NC) interactions of atmospheric neutrinos on oxygen form one of the major backgrounds in the search for supernova relic neutrinos with water-based Cherenkov detectors. The NC channel is dominated by neutrino quasi-elastic (NCQE) scattering off nucleons inside $^{16}$O nuclei. In this paper we report the first measurement of NCQE cross section using atmospheric neutrinos at Super-Kamiokande (SK). The measurement used 2,778 live days of SK-IV data with a fiducial volume of 22.5 kiloton water. Within the visible energy window of 7.5-29.5 MeV, we observed $117$ events compared to the expected $71.9$ NCQE signal and $53.1$ background events. Weighted by the atmospheric neutrino spectrum from 160 MeV to 10 GeV, the flux averaged NCQE cross section is measured to be $(1.01\pm0.17(\text{stat.})^{+0.78}_{-0.30}(\text{sys.}))\times10^{-38}$ cm$^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.05281v1-abstract-full').style.display = 'none'; document.getElementById('1901.05281v1-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 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </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, 9 figures, submitted 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 99, 032005 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.03230">arXiv:1901.03230</a> <span> [<a href="https://arxiv.org/pdf/1901.03230">pdf</a>, <a href="https://arxiv.org/format/1901.03230">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/ptz015">10.1093/ptep/ptz015 <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 Improved Event Reconstruction 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=Jiang%2C+M">M. Jiang</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=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=Mochizuki%2C+T">T. Mochizuki</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=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>, <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> , 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="1901.03230v1-abstract-short" style="display: inline;"> A new event reconstruction algorithm based on a maximum likelihood method has been developed for Super-Kamiokande. Its improved kinematic and particle identification capabilities enable the analysis of atmospheric neutrino data in a detector volume 32% larger than previous analyses and increases sensitivity to the neutrino mass hierarchy. Analysis of a 253.9 kton-year exposure of the Super-Kamioka… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.03230v1-abstract-full').style.display = 'inline'; document.getElementById('1901.03230v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.03230v1-abstract-full" style="display: none;"> A new event reconstruction algorithm based on a maximum likelihood method has been developed for Super-Kamiokande. Its improved kinematic and particle identification capabilities enable the analysis of atmospheric neutrino data in a detector volume 32% larger than previous analyses and increases sensitivity to the neutrino mass hierarchy. Analysis of a 253.9 kton-year exposure of the Super-Kamiokande IV atmospheric neutrino data has yielded a weak preference for the normal hierarchy, disfavoring the inverted hierarchy at 74% assuming oscillations at the best fit of the analysis. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.03230v1-abstract-full').style.display = 'none'; document.getElementById('1901.03230v1-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 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </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, 28 figures, submitted to PTEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog Theor Exp Phys (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1811.12430">arXiv:1811.12430</a> <span> [<a href="https://arxiv.org/pdf/1811.12430">pdf</a>, <a href="https://arxiv.org/format/1811.12430">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"> Dinucleon and Nucleon Decay to Two-Body Final States with no Hadrons in 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=Sussman%2C+S">S. Sussman</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=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=Mochizuki%2C+T">T. Mochizuki</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=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>, <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> , 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="1811.12430v1-abstract-short" style="display: inline;"> Using 0.37 megaton$\cdot$years of exposure from the Super-Kamiokande detector, we search for 10 dinucleon and nucleon decay modes that have a two-body final state with no hadrons. These baryon and lepton number violating modes have the potential to probe theories of unification and baryogenesis. For five of these modes the searches are novel, and for the other five modes we improve the limits by m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.12430v1-abstract-full').style.display = 'inline'; document.getElementById('1811.12430v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1811.12430v1-abstract-full" style="display: none;"> Using 0.37 megaton$\cdot$years of exposure from the Super-Kamiokande detector, we search for 10 dinucleon and nucleon decay modes that have a two-body final state with no hadrons. These baryon and lepton number violating modes have the potential to probe theories of unification and baryogenesis. For five of these modes the searches are novel, and for the other five modes we improve the limits by more than one order of magnitude. No significant evidence for dinucleon or nucleon decay is observed and we set lower limits on the partial lifetime of oxygen nuclei and on the nucleon partial lifetime that are above $4\times 10^{33}$ years for oxygen via the dinucleon decay modes and up to about $4 \times 10^{34}$ years for nucleons via the single nucleon decay modes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.12430v1-abstract-full').style.display = 'none'; document.getElementById('1811.12430v1-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 November, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.09436">arXiv:1711.09436</a> <span> [<a href="https://arxiv.org/pdf/1711.09436">pdf</a>, <a href="https://arxiv.org/format/1711.09436">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.98.052006">10.1103/PhysRevD.98.052006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Measurement of the Tau Neutrino Cross Section in Atmospheric Neutrino Oscillations with 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=Li%2C+Z">Z. Li</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=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+Y">Y. 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=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>, <a href="/search/hep-ex?searchtype=author&query=Takenaka%2C+A">A. Takenaka</a> , et al. (139 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="1711.09436v1-abstract-short" style="display: inline;"> Using 5,326 days of atmospheric neutrino data, a search for atmospheric tau neutrino appearance has been performed in the Super-Kamiokande experiment. Super-Kamiokande measures the tau normalization to be 1.47$\pm$0.32 under the assumption of normal neutrino hierarchy, relative to the expectation of unity with neutrino oscillation. The result excludes the hypothesis of no-tau-appearance with a sig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09436v1-abstract-full').style.display = 'inline'; document.getElementById('1711.09436v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.09436v1-abstract-full" style="display: none;"> Using 5,326 days of atmospheric neutrino data, a search for atmospheric tau neutrino appearance has been performed in the Super-Kamiokande experiment. Super-Kamiokande measures the tau normalization to be 1.47$\pm$0.32 under the assumption of normal neutrino hierarchy, relative to the expectation of unity with neutrino oscillation. The result excludes the hypothesis of no-tau-appearance with a significance level of 4.6$蟽$. The inclusive charged-current tau neutrino cross section averaged by the tau neutrino flux at Super-Kamiokande is measured to be $(0.94\pm0.20)\times 10^{-38}$ cm$^{2}$. The measurement is consistent with the Standard Model prediction, agreeing to within 1.5$蟽$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.09436v1-abstract-full').style.display = 'none'; document.getElementById('1711.09436v1-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 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 98, 052006 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1711.05278">arXiv:1711.05278</a> <span> [<a href="https://arxiv.org/pdf/1711.05278">pdf</a>, <a href="https://arxiv.org/format/1711.05278">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.120.221301">10.1103/PhysRevLett.120.221301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Boosted Dark Matter Interacting With Electrons in 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=Kachulis%2C+C">C. Kachulis</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=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=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>, <a href="/search/hep-ex?searchtype=author&query=Takenaka%2C+A">A. Takenaka</a> , et al. (135 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="1711.05278v2-abstract-short" style="display: inline;"> A search for boosted dark matter using 161.9 kiloton-years of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic Center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones aro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.05278v2-abstract-full').style.display = 'inline'; document.getElementById('1711.05278v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1711.05278v2-abstract-full" style="display: none;"> A search for boosted dark matter using 161.9 kiloton-years of Super-Kamiokande IV data is presented. We search for an excess of elastically scattered electrons above the atmospheric neutrino background, with a visible energy between 100 MeV and 1 TeV, pointing back to the Galactic Center or the Sun. No such excess is observed. Limits on boosted dark matter event rates in multiple angular cones around the Galactic Center and Sun are calculated. Limits are also calculated for a baseline model of boosted dark matter produced from cold dark matter annihilation or decay. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1711.05278v2-abstract-full').style.display = 'none'; document.getElementById('1711.05278v2-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 120, 221301 (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/1707.08604">arXiv:1707.08604</a> <span> [<a href="https://arxiv.org/pdf/1707.08604">pdf</a>, <a href="https://arxiv.org/format/1707.08604">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/aa951b">10.3847/1538-4357/aa951b <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for an excess of events in the Super-Kamiokande detector in the directions of the astrophysical neutrinos reported by the IceCube Collaboration </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=Bronner%2C+C">C. Bronner</a>, <a href="/search/hep-ex?searchtype=author&query=Pronost%2C+G">G. Pronost</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=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=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=Takenaka%2C+A">A. Takenaka</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+H">H. Tanaka</a> , et al. (139 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="1707.08604v2-abstract-short" style="display: inline;"> We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events reported in IceCube. Data from all SK phases (SK-I through SK-IV) were used, spanning a period from April 1996 to April 2016 and corresponding to an exposure of 225 kilotonne-years . We considered the 14 IceCube track events… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08604v2-abstract-full').style.display = 'inline'; document.getElementById('1707.08604v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.08604v2-abstract-full" style="display: none;"> We present the results of a search in the Super-Kamiokande (SK) detector for excesses of neutrinos with energies above a few GeV that are in the direction of the track events reported in IceCube. Data from all SK phases (SK-I through SK-IV) were used, spanning a period from April 1996 to April 2016 and corresponding to an exposure of 225 kilotonne-years . We considered the 14 IceCube track events from a data set with 1347 livetime days taken from 2010 to 2014. We use Poisson counting to determine if there is an excess of neutrinos detected in SK in a 10 degree search cone (5 degrees for the highest energy data set) around the reconstructed direction of the IceCube event. No significant excess was found in any of the search directions we examined. We also looked for coincidences with a recently reported IceCube multiplet event. No events were detected within a $\pm$ 500 s time window around the first detected event, and no significant excess was seen from that direction over the lifetime of SK. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08604v2-abstract-full').style.display = 'none'; document.getElementById('1707.08604v2-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 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">9 pages, 4 figures, Matches version published in Astrophysical Journal</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> The Super-Kamiokande collaboration, APJ, 850, 166, (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1608.08745">arXiv:1608.08745</a> <span> [<a href="https://arxiv.org/pdf/1608.08745">pdf</a>, <a href="https://arxiv.org/format/1608.08745">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/10.3847/2041-8205/830/1/L11">10.3847/2041-8205/830/1/L11 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Neutrinos in Super-Kamiokande associated with Gravitational Wave Events GW150914 and GW151226 </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+K">K. 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=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=Akutsu%2C+R">R. Akutsu</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">T. Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kaneyuki%2C+K">K. Kaneyuki</a>, <a href="/search/hep-ex?searchtype=author&query=Nishimura%2C+Y">Y. Nishimura</a>, <a href="/search/hep-ex?searchtype=author&query=Richard%2C+E">E. Richard</a> , et al. (108 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="1608.08745v1-abstract-short" style="display: inline;"> We report the results from a search in Super-Kamiokande for neutrino signals coincident with the first detected gravitational wave events, GW150914 and GW151226, using a neutrino energy range from 3.5 MeV to 100 PeV. We searched for coincident neutrino events within a time window of $\pm$500 seconds around the gravitational wave detection time. Four neutrino candidates are found for GW150914 and n… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.08745v1-abstract-full').style.display = 'inline'; document.getElementById('1608.08745v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1608.08745v1-abstract-full" style="display: none;"> We report the results from a search in Super-Kamiokande for neutrino signals coincident with the first detected gravitational wave events, GW150914 and GW151226, using a neutrino energy range from 3.5 MeV to 100 PeV. We searched for coincident neutrino events within a time window of $\pm$500 seconds around the gravitational wave detection time. Four neutrino candidates are found for GW150914 and no candidates are found for GW151226. The remaining neutrino candidates are consistent with the expected background events. We calculated the 90\% confidence level upper limits on the combined neutrino fluence for both gravitational wave events, which depends on event energy and topologies. Considering the upward going muon data set (1.6 GeV - 100 PeV) the neutrino fluence limit for each gravitational wave event is 14 - 37 (19 - 50) cm$^{-2}$ for muon neutrinos (muon antineutrinos), depending on the zenith angle of the event. In the other data sets, the combined fluence limits for both gravitational wave events range from 2.4$\times 10^{4}$ to 7.0$\times 10^{9}$ cm$^{-2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.08745v1-abstract-full').style.display = 'none'; document.getElementById('1608.08745v1-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 August, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">8 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/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/1510.08127">arXiv:1510.08127</a> <span> [<a href="https://arxiv.org/pdf/1510.08127">pdf</a>, <a href="https://arxiv.org/format/1510.08127">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="Solar and Stellar Astrophysics">astro-ph.SR</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.94.052001">10.1103/PhysRevD.94.052001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of the atmospheric neutrino flux by Super-Kamiokande: energy spectra, geomagnetic effects, and solar modulation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Richard%2C+E">E. Richard</a>, <a href="/search/hep-ex?searchtype=author&query=Okumura%2C+K">K. Okumura</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=Akutsu%2C+R">R. Akutsu</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="1510.08127v2-abstract-short" style="display: inline;"> A comprehensive study on the atmospheric neutrino flux in the energy region from sub-GeV up to several TeV using the Super-Kamiokande water Cherenkov detector is presented in this paper. The energy and azimuthal spectra of the atmospheric $谓_e+{\bar谓}_e$ and $谓_渭+{\bar谓}_渭$ fluxes are measured. The energy spectra are obtained using an iterative unfolding method by combining various event topologie… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.08127v2-abstract-full').style.display = 'inline'; document.getElementById('1510.08127v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1510.08127v2-abstract-full" style="display: none;"> A comprehensive study on the atmospheric neutrino flux in the energy region from sub-GeV up to several TeV using the Super-Kamiokande water Cherenkov detector is presented in this paper. The energy and azimuthal spectra of the atmospheric $谓_e+{\bar谓}_e$ and $谓_渭+{\bar谓}_渭$ fluxes are measured. The energy spectra are obtained using an iterative unfolding method by combining various event topologies with differing energy responses. The azimuthal spectra depending on energy and zenith angle, and their modulation by geomagnetic effects, are also studied. A predicted east-west asymmetry is observed in both the $谓_e$ and $谓_渭$ samples at 8.0 蟽 and 6.0 蟽 significance, respectively, and an indication that the asymmetry dipole angle changes depending on the zenith angle was seen at the 2.2 蟽 level. The measured energy and azimuthal spectra are consistent with the current flux models within the estimated systematic uncertainties. A study of the long-term correlation between the atmospheric neutrino flux and the solar magnetic activity cycle is also performed, and a weak indication of a correlation was seen at the 1.1 蟽 level, using SK I-IV data spanning a 20 year period. For particularly strong solar activity periods known as Forbush decreases, no theoretical prediction is available, but a deviation below the typical neutrino event rate is seen at the 2.4 蟽 level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.08127v2-abstract-full').style.display = 'none'; document.getElementById('1510.08127v2-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 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 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">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages, 31 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 94, 052001 (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/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> </ol> <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 class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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