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</div> </div> </div> <p class="title is-5 mathjax"> The JUNO experiment Top Tracker </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/physics?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/physics?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/physics?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/physics?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/physics?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/physics?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/physics?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/physics?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/physics?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/physics?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/physics?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/physics?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/physics?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">Jo茫o Pedro Athayde Marcondes de Andr茅</a>, <a href="/search/physics?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/physics?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/physics?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/physics?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/physics?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/physics?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/physics?searchtype=author&query=Bellato%2C+M">Marco Bellato</a> , et al. (592 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="2303.05172v1-abstract-short" style="display: inline;"> The main task of the Top Tracker detector of the neutrino reactor experiment Jiangmen Underground Neutrino Observatory (JUNO) is to reconstruct and extrapolate atmospheric muon tracks down to the central detector. This muon tracker will help to evaluate the contribution of the cosmogenic background to the signal. The Top Tracker is located above JUNO's water Cherenkov Detector and Central Detector… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.05172v1-abstract-full').style.display = 'inline'; document.getElementById('2303.05172v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.05172v1-abstract-full" style="display: none;"> The main task of the Top Tracker detector of the neutrino reactor experiment Jiangmen Underground Neutrino Observatory (JUNO) is to reconstruct and extrapolate atmospheric muon tracks down to the central detector. This muon tracker will help to evaluate the contribution of the cosmogenic background to the signal. The Top Tracker is located above JUNO's water Cherenkov Detector and Central Detector, covering about 60% of the surface above them. The JUNO Top Tracker is constituted by the decommissioned OPERA experiment Target Tracker modules. The technology used consists in walls of two planes of plastic scintillator strips, one per transverse direction. Wavelength shifting fibres collect the light signal emitted by the scintillator strips and guide it to both ends where it is read by multianode photomultiplier tubes. Compared to the OPERA Target Tracker, the JUNO Top Tracker uses new electronics able to cope with the high rate produced by the high rock radioactivity compared to the one in Gran Sasso underground laboratory. This paper will present the new electronics and mechanical structure developed for the Top Tracker of JUNO along with its expected performance based on the current detector simulation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.05172v1-abstract-full').style.display = 'none'; document.getElementById('2303.05172v1-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> 9 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">20 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A 1057 (2023) 168680 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.03910">arXiv:2303.03910</a> <span> [<a href="https://arxiv.org/pdf/2303.03910">pdf</a>, <a href="https://arxiv.org/format/2303.03910">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> <p class="title is-5 mathjax"> JUNO sensitivity to $^7$Be, $pep$, and CNO solar neutrinos </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/physics?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/physics?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/physics?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/physics?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/physics?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/physics?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/physics?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/physics?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/physics?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/physics?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/physics?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/physics?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">Jo茫o Pedro Athayde Marcondes de Andr茅</a>, <a href="/search/physics?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/physics?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/physics?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/physics?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/physics?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/physics?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/physics?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/physics?searchtype=author&query=Beretta%2C+M">Marco Beretta</a> , et al. (592 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="2303.03910v1-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO), the first multi-kton liquid scintillator detector, which is under construction in China, will have a unique potential to perform a real-time measurement of solar neutrinos well below the few MeV threshold typical for Water Cherenkov detectors. JUNO's large target mass and excellent energy resolution are prerequisites for reaching unprecedented… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.03910v1-abstract-full').style.display = 'inline'; document.getElementById('2303.03910v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.03910v1-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO), the first multi-kton liquid scintillator detector, which is under construction in China, will have a unique potential to perform a real-time measurement of solar neutrinos well below the few MeV threshold typical for Water Cherenkov detectors. JUNO's large target mass and excellent energy resolution are prerequisites for reaching unprecedented levels of precision. In this paper, we provide estimation of the JUNO sensitivity to 7Be, pep, and CNO solar neutrinos that can be obtained via a spectral analysis above the 0.45 MeV threshold. This study is performed assuming different scenarios of the liquid scintillator radiopurity, ranging from the most opti mistic one corresponding to the radiopurity levels obtained by the Borexino experiment, up to the minimum requirements needed to perform the neutrino mass ordering determination with reactor antineutrinos - the main goal of JUNO. Our study shows that in most scenarios, JUNO will be able to improve the current best measurements on 7Be, pep, and CNO solar neutrino fluxes. We also perform a study on the JUNO capability to detect periodical time variations in the solar neutrino flux, such as the day-night modulation induced by neutrino flavor regeneration in Earth, and the modulations induced by temperature changes driven by helioseismic waves. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.03910v1-abstract-full').style.display = 'none'; document.getElementById('2303.03910v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2002.08722">arXiv:2002.08722</a> <span> [<a href="https://arxiv.org/pdf/2002.08722">pdf</a>, <a href="https://arxiv.org/format/2002.08722">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> SND@LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=SHiP+Collaboration"> SHiP Collaboration</a>, <a href="/search/physics?searchtype=author&query=Ahdida%2C+C">C. Ahdida</a>, <a href="/search/physics?searchtype=author&query=Akmete%2C+A">A. Akmete</a>, <a href="/search/physics?searchtype=author&query=Albanese%2C+R">R. Albanese</a>, <a href="/search/physics?searchtype=author&query=Alexandrov%2C+A">A. Alexandrov</a>, <a href="/search/physics?searchtype=author&query=Andreini%2C+M">M. Andreini</a>, <a href="/search/physics?searchtype=author&query=Anokhina%2C+A">A. Anokhina</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Arduini%2C+G">G. Arduini</a>, <a href="/search/physics?searchtype=author&query=Atkin%2C+E">E. Atkin</a>, <a href="/search/physics?searchtype=author&query=Azorskiy%2C+N">N. Azorskiy</a>, <a href="/search/physics?searchtype=author&query=Back%2C+J+J">J. J. Back</a>, <a href="/search/physics?searchtype=author&query=Bagulya%2C+A">A. Bagulya</a>, <a href="/search/physics?searchtype=author&query=Santos%2C+F+B+D">F. Baaltasar Dos Santos</a>, <a href="/search/physics?searchtype=author&query=Baranov%2C+A">A. Baranov</a>, <a href="/search/physics?searchtype=author&query=Bardou%2C+F">F. Bardou</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Battistin%2C+M">M. Battistin</a>, <a href="/search/physics?searchtype=author&query=Bauche%2C+J">J. Bauche</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+A">A. Bay</a>, <a href="/search/physics?searchtype=author&query=Bayliss%2C+V">V. Bayliss</a>, <a href="/search/physics?searchtype=author&query=Bencivenni%2C+G">G. Bencivenni</a>, <a href="/search/physics?searchtype=author&query=Berdnikov%2C+A+Y">A. Y. Berdnikov</a>, <a href="/search/physics?searchtype=author&query=Berdnikov%2C+Y+A">Y. A. Berdnikov</a>, <a href="/search/physics?searchtype=author&query=Bertani%2C+M">M. Bertani</a> , et al. (319 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="2002.08722v1-abstract-short" style="display: inline;"> We propose to build and operate a detector that, for the first time, will measure the process $pp\to谓X$ at the LHC and search for feebly interacting particles (FIPs) in an unexplored domain. The TI18 tunnel has been identified as a suitable site to perform these measurements due to very low machine-induced background. The detector will be off-axis with respect to the ATLAS interaction point (IP1)… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08722v1-abstract-full').style.display = 'inline'; document.getElementById('2002.08722v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2002.08722v1-abstract-full" style="display: none;"> We propose to build and operate a detector that, for the first time, will measure the process $pp\to谓X$ at the LHC and search for feebly interacting particles (FIPs) in an unexplored domain. The TI18 tunnel has been identified as a suitable site to perform these measurements due to very low machine-induced background. The detector will be off-axis with respect to the ATLAS interaction point (IP1) and, given the pseudo-rapidity range accessible, the corresponding neutrinos will mostly come from charm decays: the proposed experiment will thus make the first test of the heavy flavour production in a pseudo-rapidity range that is not accessible by the current LHC detectors. In order to efficiently reconstruct neutrino interactions and identify their flavour, the detector will combine in the target region nuclear emulsion technology with scintillating fibre tracking layers and it will adopt a muon identification system based on scintillating bars that will also play the role of a hadronic calorimeter. The time of flight measurement will be achieved thanks to a dedicated timing detector. The detector will be a small-scale prototype of the scattering and neutrino detector (SND) of the SHiP experiment: the operation of this detector will provide an important test of the neutrino reconstruction in a high occupancy environment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2002.08722v1-abstract-full').style.display = 'none'; document.getElementById('2002.08722v1-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, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">Letter of Intent</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-LHCC-2020-002, LHCC-I-035 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.02422">arXiv:1909.02422</a> <span> [<a href="https://arxiv.org/pdf/1909.02422">pdf</a>, <a href="https://arxiv.org/format/1909.02422">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> <p class="title is-5 mathjax"> Search for low-energy neutrinos from astrophysical sources with Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenm%C3%BCller%2C+K">K. Altenm眉ller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cappelli%2C+L">L. Cappelli</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Giacinto%2C+A">A. Di Giacinto</a>, <a href="/search/physics?searchtype=author&query=Di+Marcello%2C+V">V. Di Marcello</a>, <a href="/search/physics?searchtype=author&query=Ding%2C+X+F">X. F. Ding</a> , et al. (79 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="1909.02422v1-abstract-short" style="display: inline;"> We report on searches for neutrinos and antineutrinos from astrophysical sources performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. Electron antineutrinos ($\bar谓_e$) are detected in an organic liquid scintillator through the inverse $尾$-decay reaction. In the present work we set model-independent upper limits in the energy range 1.8-16.8 MeV on neutrino flux… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.02422v1-abstract-full').style.display = 'inline'; document.getElementById('1909.02422v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.02422v1-abstract-full" style="display: none;"> We report on searches for neutrinos and antineutrinos from astrophysical sources performed with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. Electron antineutrinos ($\bar谓_e$) are detected in an organic liquid scintillator through the inverse $尾$-decay reaction. In the present work we set model-independent upper limits in the energy range 1.8-16.8 MeV on neutrino fluxes from unknown sources that improve our previous results, on average, by a factor 2.5. Using the same data set, we first obtain experimental constraints on the diffuse supernova $\bar谓_e$ fluxes in the previously unexplored region below 8 MeV. A search for $\bar谓_e$ in the solar neutrino flux is also presented: the presence of $\bar谓_e$ would be a manifestation of a non-zero anomalous magnetic moment of the neutrino, making possible its conversion to antineutrinos in the strong magnetic field of the Sun. We obtain a limit for a solar $\bar谓_e$ flux of 384 cm$^{-2}$s$^{-1}$ (90% C.L.), assuming an undistorted solar $^{8}$B neutrinos energy spectrum, that corresponds to a transition probability $p_{ 谓_e \rightarrow \bar谓_{e}}<$ 7.2$\times$10$^{-5}$ (90% C.L.) for E$_{\bar 谓_e}$ $>$ 1.8 MeV. At lower energies, by investigating the spectral shape of elastic scattering events, we obtain a new limit on solar $^{7}$Be-$谓_e$ conversion into $\bar谓_e$ of $p_{ 谓_e \rightarrow \bar 谓_{e}}<$ 0.14 (90% C.L.) at 0.862 keV. Last, we investigate solar flares as possible neutrino sources and obtain the strongest up-to-date limits on the fluence of neutrinos of all flavor neutrino below 3-7 ,MeV. Assuming the neutrino flux to be proportional to the flare's intensity, we exclude an intense solar flare as the cause of the observed excess of events in run 117 of the Cl-Ar Homestake experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.02422v1-abstract-full').style.display = 'none'; document.getElementById('1909.02422v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">18 pages, 8 figures, 4 tables, 73 references</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.02257">arXiv:1909.02257</a> <span> [<a href="https://arxiv.org/pdf/1909.02257">pdf</a>, <a href="https://arxiv.org/format/1909.02257">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="Geophysics">physics.geo-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.101.012009">10.1103/PhysRevD.101.012009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Comprehensive geoneutrino analysis with Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenm%C3%BCller%2C+K">K. Altenm眉ller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cappelli%2C+L">L. Cappelli</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Giacinto%2C+A">A. Di Giacinto</a>, <a href="/search/physics?searchtype=author&query=Di+Marcello%2C+V">V. Di Marcello</a>, <a href="/search/physics?searchtype=author&query=Ding%2C+X+F">X. F. Ding</a> , et al. (87 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="1909.02257v2-abstract-short" style="display: inline;"> This paper presents a geoneutrino measurement using 3262.74 days of data taken with the Borexino detector at LNGS in Italy. By observing $52.6 ^{+9.4}_{-8.6} ({\rm stat}) ^{+2.7}_{-2.1}({\rm sys})$ geoneutrinos (68% interval) from $^{238}$U and $^{232}$Th, a signal of $47.0^{+8.4}_{-7.7}\,({\rm stat)}^{+2.4}_{-1.9}\,({\rm sys})$ TNU with $^{+18.3}_{-17.2}$% total precision was obtained. This resul… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.02257v2-abstract-full').style.display = 'inline'; document.getElementById('1909.02257v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.02257v2-abstract-full" style="display: none;"> This paper presents a geoneutrino measurement using 3262.74 days of data taken with the Borexino detector at LNGS in Italy. By observing $52.6 ^{+9.4}_{-8.6} ({\rm stat}) ^{+2.7}_{-2.1}({\rm sys})$ geoneutrinos (68% interval) from $^{238}$U and $^{232}$Th, a signal of $47.0^{+8.4}_{-7.7}\,({\rm stat)}^{+2.4}_{-1.9}\,({\rm sys})$ TNU with $^{+18.3}_{-17.2}$% total precision was obtained. This result assumes the same Th/U mass ratio found in chondritic CI meteorites but compatible results were found when contributions from $^{238}$U and $^{232}$Th were fit as free parameters. Antineutrino background from reactors is fit unconstrained and found compatible with the expectations. The null-hypothesis of observing a signal from the mantle is excluded at a 99.0% C.L. when exploiting the knowledge of the local crust. Measured mantle signal of $21.2 ^{+9.6}_{-9.0} ({\rm stat})^{+1.1}_{-0.9} ({\rm sys})$ TNU corresponds to the production of a radiogenic heat of $24.6 ^{+11.1}_{-10.4}$ TW (68% interval) from $^{238}$U and $^{232}$Th in the mantle. Assuming 18% contribution of $^{40}$K in the mantle and $8.1^{+1.9}_{-1.4}$ TW of radiogenic heat of the lithosphere, the Borexino estimate of the total Earth radiogenic heat is $38.2 ^{+13.6}_{-12.7}$ TW, corresponding to a convective Urey ratio of 0.78$^{+0.41}_{-0.28}$. These values are compatible with different geological models, however there is a 2.4$蟽$ tension with those which predict the lowest concentration of heat-producing elements. By fitting the data with a constraint on the reactor antineutrino background, the existence of a hypothetical georeactor at the center of the Earth having power greater than 2.4 TW at 95% C.L. is excluded. Particular attention is given to all analysis details, which should be of interest for the next generation geoneutrino measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.02257v2-abstract-full').style.display = 'none'; document.getElementById('1909.02257v2-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> 14 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">69 pages, 56 Figures (some composed of multiple files), 17 Tables, 135 References</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 012009 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.03512">arXiv:1905.03512</a> <span> [<a href="https://arxiv.org/pdf/1905.03512">pdf</a>, <a href="https://arxiv.org/format/1905.03512">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 - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <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/10.1007/JHEP02(2020)038">10.1007/JHEP02(2020)038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on Flavor-Diagonal Non-Standard Neutrino Interactions from Borexino Phase-II </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agarwalla%2C+S+K">S. K. Agarwalla</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenm%C3%BCller%2C+K">K. Altenm眉ller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cappelli%2C+L">L. Cappelli</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Giacinto%2C+A">A. Di Giacinto</a>, <a href="/search/physics?searchtype=author&query=Di+Marcello%2C+V">V. Di Marcello</a> , et al. (81 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="1905.03512v2-abstract-short" style="display: inline;"> The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-$谓_{e}$ survival probability $P_{ee}(E)$, and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI's) which modify the chiral couplings and $P_{ee}(E)$.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.03512v2-abstract-full').style.display = 'inline'; document.getElementById('1905.03512v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.03512v2-abstract-full" style="display: none;"> The Borexino detector measures solar neutrino fluxes via neutrino-electron elastic scattering. Observed spectra are determined by the solar-$谓_{e}$ survival probability $P_{ee}(E)$, and the chiral couplings of the neutrino and electron. Some theories of physics beyond the Standard Model postulate the existence of Non-Standard Interactions (NSI's) which modify the chiral couplings and $P_{ee}(E)$. In this paper, we search for such NSI's, in particular, flavor-diagonal neutral current interactions that modify the $谓_e e$ and $谓_蟿e$ couplings using Borexino Phase II data. Standard Solar Model predictions of the solar neutrino fluxes for both high- and low-metallicity assumptions are considered. No indication of new physics is found at the level of sensitivity of the detector and constraints on the parameters of the NSI's are placed. In addition, with the same dataset the value of $\sin^2胃_W$ is obtained with a precision comparable to that achieved in reactor antineutrino experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.03512v2-abstract-full').style.display = 'none'; document.getElementById('1905.03512v2-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 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">28 pages, 7 figures. Slight modifications in the title, abstract, and conclusion. Few references added. Text expanded for clarity. Accepted in JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IP/BBSR/2019-2 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 2002 (2020) 038 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.04207">arXiv:1808.04207</a> <span> [<a href="https://arxiv.org/pdf/1808.04207">pdf</a>, <a href="https://arxiv.org/format/1808.04207">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/10.1088/1475-7516/2019/02/046">10.1088/1475-7516/2019/02/046 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Modulations of the Cosmic Muon Signal in Ten Years of Borexino Data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+Borexino+Collaboration"> The Borexino Collaboration</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenm%C3%BCller%2C+K">K. Altenm眉ller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bolognino%2C+I">I. Bolognino</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Caprioli%2C+S">S. Caprioli</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+M">M. Carlini</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Cavanna%2C+F">F. Cavanna</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=Collica%2C+L">L. Collica</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a> , et al. (91 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="1808.04207v3-abstract-short" style="display: inline;"> We have measured the flux of cosmic muons in the Laboratori Nazionali del Gran Sasso at 3800\,m\,w.e. to be $(3.432 \pm 0.003)\cdot 10^{-4}\,\mathrm{{m^{-2}s^{-1}}}$ based on ten years of Borexino data acquired between May 2007 and May 2017. A seasonal modulation with a period of $(366.3 \pm 0.6)\,\mathrm{d}$ and a relative amplitude of $(1.36 \pm0.04)\%$ is observed. The phase is measured to be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.04207v3-abstract-full').style.display = 'inline'; document.getElementById('1808.04207v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.04207v3-abstract-full" style="display: none;"> We have measured the flux of cosmic muons in the Laboratori Nazionali del Gran Sasso at 3800\,m\,w.e. to be $(3.432 \pm 0.003)\cdot 10^{-4}\,\mathrm{{m^{-2}s^{-1}}}$ based on ten years of Borexino data acquired between May 2007 and May 2017. A seasonal modulation with a period of $(366.3 \pm 0.6)\,\mathrm{d}$ and a relative amplitude of $(1.36 \pm0.04)\%$ is observed. The phase is measured to be $(181.7 \pm 0.4)\,\mathrm{d}$, corresponding to a maximum at the 1$^\mathrm{st}$ of July. Using data inferred from global atmospheric models, we show the muon flux to be positively correlated with the atmospheric temperature and measure the effective temperature coefficient $伪_\mathrm{T} = 0.90 \pm 0.02$. The origin of cosmic muons from pion and kaon decays in the atmosphere allows to interpret the effective temperature coefficient as an indirect measurement of the atmospheric kaon-to-pion production ratio $r_{\mathrm{K}/蟺} = 0.11^{+0.11}_{-0.07}$ for primary energies above $18\,\mathrm{TeV}$. We find evidence for a long-term modulation of the muon flux with a period of $\sim 3000\,\mathrm{d}$ and a maximum in June 2012 that is not present in the atmospheric temperature data. A possible correlation between this modulation and the solar activity is investigated. The cosmogenic neutron production rate is found to show a seasonal modulation in phase with the cosmic muon flux but with an increased amplitude of $(2.6 \pm 0.4)\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.04207v3-abstract-full').style.display = 'none'; document.getElementById('1808.04207v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages, 16 figures, proofreading for publication in JCAP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.11125">arXiv:1805.11125</a> <span> [<a href="https://arxiv.org/pdf/1805.11125">pdf</a>, <a href="https://arxiv.org/format/1805.11125">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-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/10.1088/1742-6596/1342/1/012115">10.1088/1742-6596/1342/1/012115 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Speeding up complex multivariate data analysis in Borexino with parallel computing based on Graphics Processing Unit </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ding%2C+X+F">X. F. Ding</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenmuller%2C+K">K. Altenmuller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Caprioli%2C+S">S. Caprioli</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+M">M. Carlini</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=Collica%2C+L">L. Collica</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Ludovico%2C+A">A. Di Ludovico</a> , et al. (82 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="1805.11125v1-abstract-short" style="display: inline;"> A spectral fitter based on the graphics processor unit (GPU) has been developed for Borexino solar neutrino analysis. It is able to shorten the fitting time to a superior level compared to the CPU fitting procedure. In Borexino solar neutrino spectral analysis, fitting usually requires around one hour to converge since it includes time-consuming convolutions in order to account for the detector re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.11125v1-abstract-full').style.display = 'inline'; document.getElementById('1805.11125v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.11125v1-abstract-full" style="display: none;"> A spectral fitter based on the graphics processor unit (GPU) has been developed for Borexino solar neutrino analysis. It is able to shorten the fitting time to a superior level compared to the CPU fitting procedure. In Borexino solar neutrino spectral analysis, fitting usually requires around one hour to converge since it includes time-consuming convolutions in order to account for the detector response and pile-up effects. Moreover, the convergence time increases to more than two days when including extra computations for the discrimination of $^{11}$C and external $纬$s. In sharp contrast, with the GPU-based fitter it takes less than 10 seconds and less than four minutes, respectively. This fitter is developed utilizing the GooFit project with customized likelihoods, pdfs and infrastructures supporting certain analysis methods. In this proceeding the design of the package, developed features and the comparison with the original CPU fitter are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.11125v1-abstract-full').style.display = 'none'; document.getElementById('1805.11125v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 2 figures, proceeding for TAUP 2017 XV International Conference on Topics in Astroparticle and Underground Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> 1342 no. 012115 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Physics: Conference Series (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.03346">arXiv:1707.03346</a> <span> [<a href="https://arxiv.org/pdf/1707.03346">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Chemical Physics">physics.chem-ph</span> </div> </div> <p class="title is-5 mathjax"> Self-Assembling Oxide Catalyst for Electrochemical Water Splitting </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bick%2C+D+S">Daniel S. Bick</a>, <a href="/search/physics?searchtype=author&query=Kindsmueller%2C+A">Andreas Kindsmueller</a>, <a href="/search/physics?searchtype=author&query=Cho%2C+D">Deok-Yong Cho</a>, <a href="/search/physics?searchtype=author&query=Mohamed%2C+A+Y">Ahmed Yousef Mohamed</a>, <a href="/search/physics?searchtype=author&query=Bredow%2C+T">Thomas Bredow</a>, <a href="/search/physics?searchtype=author&query=Laufen%2C+H">Hendrik Laufen</a>, <a href="/search/physics?searchtype=author&query=Gunkel%2C+F">Felix Gunkel</a>, <a href="/search/physics?searchtype=author&query=Mueller%2C+D+N">David N. Mueller</a>, <a href="/search/physics?searchtype=author&query=Schneller%2C+T">Theodor Schneller</a>, <a href="/search/physics?searchtype=author&query=Waser%2C+R">Rainer Waser</a>, <a href="/search/physics?searchtype=author&query=Valov%2C+I">Ilia Valov</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1707.03346v1-abstract-short" style="display: inline;"> Renewable energy conversion and storage, and greenhouse gas emission-free technologies are within the primary tasks and challenges for the society. Hydrogen fuel, produced by alkaline water electrolysis is fulfilling all these demands, however the technology is economically feeble, limited by the slow rate of oxygen evolution reaction. Complex metal oxides were suggested to overcome this problem b… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.03346v1-abstract-full').style.display = 'inline'; document.getElementById('1707.03346v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.03346v1-abstract-full" style="display: none;"> Renewable energy conversion and storage, and greenhouse gas emission-free technologies are within the primary tasks and challenges for the society. Hydrogen fuel, produced by alkaline water electrolysis is fulfilling all these demands, however the technology is economically feeble, limited by the slow rate of oxygen evolution reaction. Complex metal oxides were suggested to overcome this problem being low-cost efficient catalysts. However, the insufficient long-term stability, degradation of structure and electrocatalytic activity are restricting their utilization. Here we report on a new perovskite-based self-assembling material BaCo0.98Ti0.02O3-$未$:Co3O4 with superior performance, showing outstanding properties compared to current state-of-the-art materials without degeneration of its properties even at 353 K. By chemical and structural analysis the degradation mechanism was identified and modified by selective doping. Short-range order and chemical composition rather than long-range order are factors determining the outstanding performance. The derived general design rules can be used for further development of oxide-based electrocatalytic materials. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.03346v1-abstract-full').style.display = 'none'; document.getElementById('1707.03346v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 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">24 pages, 3 Figures and 5 Extended Data Figures, 1 Table, including Suplementary Information</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1704.02291">arXiv:1704.02291</a> <span> [<a href="https://arxiv.org/pdf/1704.02291">pdf</a>, <a href="https://arxiv.org/format/1704.02291">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.astropartphys.2017.10.003">10.1016/j.astropartphys.2017.10.003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Monte Carlo simulation of the Borexino detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenmuller%2C+K">K. Altenmuller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Bagdasarian%2C+Z">Z. Bagdasarian</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Borodikhina%2C+L">L. Borodikhina</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Caprioli%2C+S">S. Caprioli</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+M">M. Carlini</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Ding%2C+X+F">X. F. Ding</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a> , et al. (75 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1704.02291v1-abstract-short" style="display: inline;"> We describe the Monte Carlo (MC) simulation package of the Borexino detector and discuss the agreement of its output with data. The Borexino MC 'ab initio' simulates the energy loss of particles in all detector components and generates the resulting scintillation photons and their propagation within the liquid scintillator volume. The simulation accounts for absorption, reemission, and scattering… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.02291v1-abstract-full').style.display = 'inline'; document.getElementById('1704.02291v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1704.02291v1-abstract-full" style="display: none;"> We describe the Monte Carlo (MC) simulation package of the Borexino detector and discuss the agreement of its output with data. The Borexino MC 'ab initio' simulates the energy loss of particles in all detector components and generates the resulting scintillation photons and their propagation within the liquid scintillator volume. The simulation accounts for absorption, reemission, and scattering of the optical photons and tracks them until they either are absorbed or reach the photocathode of one of the photomultiplier tubes. Photon detection is followed by a comprehensive simulation of the readout electronics response. The algorithm proceeds with a detailed simulation of the electronics chain. The MC is tuned using data collected with radioactive calibration sources deployed inside and around the scintillator volume. The simulation reproduces the energy response of the detector, its uniformity within the fiducial scintillator volume relevant to neutrino physics, and the time distribution of detected photons to better than 1% between 100 keV and several MeV. The techniques developed to simulate the Borexino detector and their level of refinement are of possible interest to the neutrino community, especially for current and future large-volume liquid scintillator experiments such as Kamland-Zen, SNO+, and Juno. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.02291v1-abstract-full').style.display = 'none'; document.getElementById('1704.02291v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 April, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1703.03612">arXiv:1703.03612</a> <span> [<a href="https://arxiv.org/pdf/1703.03612">pdf</a>, <a href="https://arxiv.org/format/1703.03612">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/12/05/P05011">10.1088/1748-0221/12/05/P05011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The active muon shield in the SHiP experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=SHiP+collaboration"> SHiP collaboration</a>, <a href="/search/physics?searchtype=author&query=Akmete%2C+A">A. Akmete</a>, <a href="/search/physics?searchtype=author&query=Alexandrov%2C+A">A. Alexandrov</a>, <a href="/search/physics?searchtype=author&query=Anokhina%2C+A">A. Anokhina</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Atkin%2C+E">E. Atkin</a>, <a href="/search/physics?searchtype=author&query=Azorskiy%2C+N">N. Azorskiy</a>, <a href="/search/physics?searchtype=author&query=Back%2C+J+J">J. J. Back</a>, <a href="/search/physics?searchtype=author&query=Bagulya%2C+A">A. Bagulya</a>, <a href="/search/physics?searchtype=author&query=Baranov%2C+A">A. Baranov</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+A">A. Bay</a>, <a href="/search/physics?searchtype=author&query=Bayliss%2C+V">V. Bayliss</a>, <a href="/search/physics?searchtype=author&query=Bencivenni%2C+G">G. Bencivenni</a>, <a href="/search/physics?searchtype=author&query=Berdnikov%2C+A+Y">A. Y. Berdnikov</a>, <a href="/search/physics?searchtype=author&query=Berdnikov%2C+Y+A">Y. A. Berdnikov</a>, <a href="/search/physics?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/physics?searchtype=author&query=Betancourt%2C+C">C. Betancourt</a>, <a href="/search/physics?searchtype=author&query=Bezshyiko%2C+I">I. Bezshyiko</a>, <a href="/search/physics?searchtype=author&query=Bezshyyko%2C+O">O. Bezshyyko</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bieschke%2C+S">S. Bieschke</a>, <a href="/search/physics?searchtype=author&query=Blanco%2C+A">A. Blanco</a>, <a href="/search/physics?searchtype=author&query=Boehm%2C+J">J. Boehm</a>, <a href="/search/physics?searchtype=author&query=Bogomilov%2C+M">M. Bogomilov</a> , et al. (207 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1703.03612v2-abstract-short" style="display: inline;"> The SHiP experiment is designed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. An essential task for the experiment is to keep the Standard Model background level to less than 0.1 event after $2\times 10^{20}$ protons on target. In the beam dump, around $10^{11}$ muons will be produced per second. The mu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.03612v2-abstract-full').style.display = 'inline'; document.getElementById('1703.03612v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1703.03612v2-abstract-full" style="display: none;"> The SHiP experiment is designed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. An essential task for the experiment is to keep the Standard Model background level to less than 0.1 event after $2\times 10^{20}$ protons on target. In the beam dump, around $10^{11}$ muons will be produced per second. The muon rate in the spectrometer has to be reduced by at least four orders of magnitude to avoid muon-induced combinatorial background. A novel active muon shield is used to magnetically deflect the muons out of the acceptance of the spectrometer. This paper describes the basic principle of such a shield, its optimization and its performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.03612v2-abstract-full').style.display = 'none'; document.getElementById('1703.03612v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 5 figures; added clarifications to the penalty function and emphasized that we care about neutrino interactions in the air</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2017_JINST_12_P05011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1701.07970">arXiv:1701.07970</a> <span> [<a href="https://arxiv.org/pdf/1701.07970">pdf</a>, <a href="https://arxiv.org/format/1701.07970">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.2017.04.004">10.1016/j.astropartphys.2017.04.004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Seasonal Modulation of the $^7$Be Solar Neutrino Rate in Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenmuller%2C+K">K. Altenmuller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Atroshchenko%2C+V">V. Atroshchenko</a>, <a href="/search/physics?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Borodikhina%2C+L">L. Borodikhina</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Caprioli%2C+S">S. Caprioli</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+M">M. Carlini</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Ding%2C+X+F">X. F. Ding</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a>, <a href="/search/physics?searchtype=author&query=Drachnev%2C+I">I. Drachnev</a> , et al. (77 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="1701.07970v2-abstract-short" style="display: inline;"> We detected the seasonal modulation of the $^7$Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99\% C.L. The data are analyzed using three methods: the sinusoidal fi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1701.07970v2-abstract-full').style.display = 'inline'; document.getElementById('1701.07970v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1701.07970v2-abstract-full" style="display: none;"> We detected the seasonal modulation of the $^7$Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99\% C.L. The data are analyzed using three methods: the sinusoidal fit, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1701.07970v2-abstract-full').style.display = 'none'; document.getElementById('1701.07970v2-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> 24 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 January, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">11 palese, 13 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.06795">arXiv:1605.06795</a> <span> [<a href="https://arxiv.org/pdf/1605.06795">pdf</a>, <a href="https://arxiv.org/format/1605.06795">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> The Main Results of the Borexino Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Muratova%2C+V">V. Muratova</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Altenmuller%2C+K">K. Altenmuller</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Carlini%2C+M">M. Carlini</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a>, <a href="/search/physics?searchtype=author&query=Drachnev%2C+I">I. Drachnev</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Formozov%2C+A">A. Formozov</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Gabriele%2C+F">F. Gabriele</a> , et al. (74 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1605.06795v1-abstract-short" style="display: inline;"> The main physical results on the registration of solar neutrinos and the search for rare processes obtained by the Borexino collaboration to date are presented. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.06795v1-abstract-full" style="display: none;"> The main physical results on the registration of solar neutrinos and the search for rare processes obtained by the Borexino collaboration to date are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.06795v1-abstract-full').style.display = 'none'; document.getElementById('1605.06795v1-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 8 figgures, To be published as Proceedings of the Third Annual Large Hadron Collider Physics Conference, St. Petersburg, Russia, 2015</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.01223">arXiv:1509.01223</a> <span> [<a href="https://arxiv.org/pdf/1509.01223">pdf</a>, <a href="https://arxiv.org/ps/1509.01223">ps</a>, <a href="https://arxiv.org/format/1509.01223">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/PhysRevLett.115.231802">10.1103/PhysRevLett.115.231802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A test of electric charge conservation with Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+Collaboration"> Borexino Collaboration</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a>, <a href="/search/physics?searchtype=author&query=Drachnev%2C+I">I. Drachnev</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Gabriele%2C+F">F. Gabriele</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a> , et al. (73 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.01223v2-abstract-short" style="display: inline;"> Borexino is a liquid scintillation detector located deep underground at the Laboratori Nazionali del Gran Sasso (LNGS, Italy). Thanks to the unmatched radio-purity of the scintillator, and to the well understood detector response at low energy, a new limit on the stability of the electron for decay into a neutrino and a single mono-energetic photon was obtained. This new bound, tau > 6.6 10**28 yr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01223v2-abstract-full').style.display = 'inline'; document.getElementById('1509.01223v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.01223v2-abstract-full" style="display: none;"> Borexino is a liquid scintillation detector located deep underground at the Laboratori Nazionali del Gran Sasso (LNGS, Italy). Thanks to the unmatched radio-purity of the scintillator, and to the well understood detector response at low energy, a new limit on the stability of the electron for decay into a neutrino and a single mono-energetic photon was obtained. This new bound, tau > 6.6 10**28 yr at 90 % C.L., is two orders of magnitude better than the previous limit. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01223v2-abstract-full').style.display = 'none'; document.getElementById('1509.01223v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 November, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 1 figure</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, 231802 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1508.07166">arXiv:1508.07166</a> <span> [<a href="https://arxiv.org/pdf/1508.07166">pdf</a>, <a href="https://arxiv.org/format/1508.07166">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> JUNO Conceptual Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Adam%2C+T">T. Adam</a>, <a href="/search/physics?searchtype=author&query=An%2C+F">F. An</a>, <a href="/search/physics?searchtype=author&query=An%2C+G">G. An</a>, <a href="/search/physics?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/physics?searchtype=author&query=Anfimov%2C+N">N. Anfimov</a>, <a href="/search/physics?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/physics?searchtype=author&query=Baccolo%2C+G">G. Baccolo</a>, <a href="/search/physics?searchtype=author&query=Baldoncini%2C+M">M. Baldoncini</a>, <a href="/search/physics?searchtype=author&query=Baussan%2C+E">E. Baussan</a>, <a href="/search/physics?searchtype=author&query=Bellato%2C+M">M. Bellato</a>, <a href="/search/physics?searchtype=author&query=Bezrukov%2C+L">L. Bezrukov</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Blyth%2C+S">S. Blyth</a>, <a href="/search/physics?searchtype=author&query=Boarin%2C+S">S. Boarin</a>, <a href="/search/physics?searchtype=author&query=Brigatti%2C+A">A. Brigatti</a>, <a href="/search/physics?searchtype=author&query=Brugi%C3%A8re%2C+T">T. Brugi猫re</a>, <a href="/search/physics?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Busto%2C+J">J. Busto</a>, <a href="/search/physics?searchtype=author&query=Cabrera%2C+A">A. Cabrera</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+H">H. Cai</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+X">X. Cai</a>, <a href="/search/physics?searchtype=author&query=Cammi%2C+A">A. Cammi</a>, <a href="/search/physics?searchtype=author&query=Cao%2C+D">D. Cao</a>, <a href="/search/physics?searchtype=author&query=Cao%2C+G">G. Cao</a> , et al. (372 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="1508.07166v2-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden. Within six years of running, the dete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.07166v2-abstract-full').style.display = 'inline'; document.getElementById('1508.07166v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.07166v2-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO) is proposed to determine the neutrino mass hierarchy using an underground liquid scintillator detector. It is located 53 km away from both Yangjiang and Taishan Nuclear Power Plants in Guangdong, China. The experimental hall, spanning more than 50 meters, is under a granite mountain of over 700 m overburden. Within six years of running, the detection of reactor antineutrinos can resolve the neutrino mass hierarchy at a confidence level of 3-4$蟽$, and determine neutrino oscillation parameters $\sin^2胃_{12}$, $螖m^2_{21}$, and $|螖m^2_{ee}|$ to an accuracy of better than 1%. The JUNO detector can be also used to study terrestrial and extra-terrestrial neutrinos and new physics beyond the Standard Model. The central detector contains 20,000 tons liquid scintillator with an acrylic sphere of 35 m in diameter. $\sim$17,000 508-mm diameter PMTs with high quantum efficiency provide $\sim$75% optical coverage. The current choice of the liquid scintillator is: linear alkyl benzene (LAB) as the solvent, plus PPO as the scintillation fluor and a wavelength-shifter (Bis-MSB). The number of detected photoelectrons per MeV is larger than 1,100 and the energy resolution is expected to be 3% at 1 MeV. The calibration system is designed to deploy multiple sources to cover the entire energy range of reactor antineutrinos, and to achieve a full-volume position coverage inside the detector. The veto system is used for muon detection, muon induced background study and reduction. It consists of a Water Cherenkov detector and a Top Tracker system. The readout system, the detector control system and the offline system insure efficient and stable data acquisition and processing. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.07166v2-abstract-full').style.display = 'none'; document.getElementById('1508.07166v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 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">328 pages, 211 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/1508.05379">arXiv:1508.05379</a> <span> [<a href="https://arxiv.org/pdf/1508.05379">pdf</a>, <a href="https://arxiv.org/format/1508.05379">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="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nuclphysbps.2015.06.023">10.1016/j.nuclphysbps.2015.06.023 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Low-energy (anti)neutrino physics with Borexino: Neutrinos from the primary proton-proton fusion process in the Sun </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mosteiro%2C+P">P. Mosteiro</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Gabriele%2C+F">F. Gabriele</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a> , et al. (66 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="1508.05379v1-abstract-short" style="display: inline;"> The Sun is fueled by a series of nuclear reactions that produce the energy that makes it shine. The primary reaction is the fusion of two protons into a deuteron, a positron and a neutrino. These neutrinos constitute the vast majority of neutrinos reaching Earth, providing us with key information about what goes on at the core of our star. Several experiments have now confirmed the observation of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.05379v1-abstract-full').style.display = 'inline'; document.getElementById('1508.05379v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1508.05379v1-abstract-full" style="display: none;"> The Sun is fueled by a series of nuclear reactions that produce the energy that makes it shine. The primary reaction is the fusion of two protons into a deuteron, a positron and a neutrino. These neutrinos constitute the vast majority of neutrinos reaching Earth, providing us with key information about what goes on at the core of our star. Several experiments have now confirmed the observation of neutrino oscillations by detecting neutrinos from secondary nuclear processes in the Sun; this is the first direct spectral measurement of the neutrinos from the keystone proton-proton fusion. This observation is a crucial step towards the completion of the spectroscopy of pp-chain neutrinos, as well as further validation of the LMA-MSW model of neutrino oscillations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1508.05379v1-abstract-full').style.display = 'none'; document.getElementById('1508.05379v1-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 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">Proceedings from NOW (Neutrino Oscillation Workshop) 2014</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear and Particle Physics Proceedings 265-266 (2015) 87-92 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.02432">arXiv:1507.02432</a> <span> [<a href="https://arxiv.org/pdf/1507.02432">pdf</a>, <a href="https://arxiv.org/ps/1507.02432">ps</a>, <a href="https://arxiv.org/format/1507.02432">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1134/S106377961606023X">10.1134/S106377961606023X <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of neutrino flux from the primary proton--proton fusion process in the Sun with Borexino detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Smirnov%2C+O+Y">O. Y. Smirnov</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a>, <a href="/search/physics?searchtype=author&query=Drachnev%2C+I">I. Drachnev</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Gabriele%2C+F">F. Gabriele</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a> , et al. (72 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="1507.02432v1-abstract-short" style="display: inline;"> Neutrino produced in a chain of nuclear reactions in the Sun starting from the fusion of two protons, for the first time has been detected in a real-time detector in spectrometric mode. The unique properties of the Borexino detector provided an oppurtunity to disentangle pp-neutrino spectrum from the background components. A comparison of the total neutrino flux from the Sun with Solar luminosity… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.02432v1-abstract-full').style.display = 'inline'; document.getElementById('1507.02432v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.02432v1-abstract-full" style="display: none;"> Neutrino produced in a chain of nuclear reactions in the Sun starting from the fusion of two protons, for the first time has been detected in a real-time detector in spectrometric mode. The unique properties of the Borexino detector provided an oppurtunity to disentangle pp-neutrino spectrum from the background components. A comparison of the total neutrino flux from the Sun with Solar luminosity in photons provides a test of the stability of the Sun on the 10$^{5}$ years time scale, and sets a strong limit on the power production in the unknown energy sources in the Sun of no more than 4\% of the total energy production at 90\% C.L. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.02432v1-abstract-full').style.display = 'none'; document.getElementById('1507.02432v1-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> 9 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">15 pages, 2 tables, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.04610">arXiv:1506.04610</a> <span> [<a href="https://arxiv.org/pdf/1506.04610">pdf</a>, <a href="https://arxiv.org/format/1506.04610">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.92.031101">10.1103/PhysRevD.92.031101 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of geo-neutrinos from 2056 days of Borexino data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+collaboration"> Borexino collaboration</a>, <a href="/search/physics?searchtype=author&query=Agostini%2C+M">M. Agostini</a>, <a href="/search/physics?searchtype=author&query=Appel%2C+S">S. Appel</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+K">K. Choi</a>, <a href="/search/physics?searchtype=author&query=DAngelo%2C+D">D. DAngelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Di+Noto%2C+L">L. Di Noto</a>, <a href="/search/physics?searchtype=author&query=Drachnev%2C+I">I. Drachnev</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fiorentini%2C+G">G. Fiorentini</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Gabriele%2C+F">F. Gabriele</a> , et al. (77 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="1506.04610v2-abstract-short" style="display: inline;"> We report an improved geo-neutrino measurement with Borexino from 2056 days of data taking. The present exposure is $(5.5\pm0.3)\times10^{31}$ proton$\times$yr. Assuming a chondritic Th/U mass ratio of 3.9, we obtain $23.7 ^{+6.5}_{-5.7} (stat) ^{+0.9}_{-0.6} (sys)$ geo-neutrino events. The null observation of geo-neutrinos with Borexino alone has a probability of $3.6 \times 10^{-9}$ (5.9$蟽$). A… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.04610v2-abstract-full').style.display = 'inline'; document.getElementById('1506.04610v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.04610v2-abstract-full" style="display: none;"> We report an improved geo-neutrino measurement with Borexino from 2056 days of data taking. The present exposure is $(5.5\pm0.3)\times10^{31}$ proton$\times$yr. Assuming a chondritic Th/U mass ratio of 3.9, we obtain $23.7 ^{+6.5}_{-5.7} (stat) ^{+0.9}_{-0.6} (sys)$ geo-neutrino events. The null observation of geo-neutrinos with Borexino alone has a probability of $3.6 \times 10^{-9}$ (5.9$蟽$). A geo-neutrino signal from the mantle is obtained at 98\% C.L. The radiogenic heat production for U and Th from the present best-fit result is restricted to the range 23-36 TW, taking into account the uncertainty on the distribution of heat producing elements inside the Earth. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.04610v2-abstract-full').style.display = 'none'; document.getElementById('1506.04610v2-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 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 4 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 92, 031101 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1504.04956">arXiv:1504.04956</a> <span> [<a href="https://arxiv.org/pdf/1504.04956">pdf</a>, <a href="https://arxiv.org/format/1504.04956">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> A facility to Search for Hidden Particles (SHiP) at the CERN SPS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=SHiP+Collaboration"> SHiP Collaboration</a>, <a href="/search/physics?searchtype=author&query=Anelli%2C+M">M. Anelli</a>, <a href="/search/physics?searchtype=author&query=Aoki%2C+S">S. Aoki</a>, <a href="/search/physics?searchtype=author&query=Arduini%2C+G">G. Arduini</a>, <a href="/search/physics?searchtype=author&query=Back%2C+J+J">J. J. Back</a>, <a href="/search/physics?searchtype=author&query=Bagulya%2C+A">A. Bagulya</a>, <a href="/search/physics?searchtype=author&query=Baldini%2C+W">W. Baldini</a>, <a href="/search/physics?searchtype=author&query=Baranov%2C+A">A. Baranov</a>, <a href="/search/physics?searchtype=author&query=Barker%2C+G+J">G. J. Barker</a>, <a href="/search/physics?searchtype=author&query=Barsuk%2C+S">S. Barsuk</a>, <a href="/search/physics?searchtype=author&query=Battistin%2C+M">M. Battistin</a>, <a href="/search/physics?searchtype=author&query=Bauche%2C+J">J. Bauche</a>, <a href="/search/physics?searchtype=author&query=Bay%2C+A">A. Bay</a>, <a href="/search/physics?searchtype=author&query=Bayliss%2C+V">V. Bayliss</a>, <a href="/search/physics?searchtype=author&query=Bellagamba%2C+L">L. Bellagamba</a>, <a href="/search/physics?searchtype=author&query=Bencivenni%2C+G">G. Bencivenni</a>, <a href="/search/physics?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/physics?searchtype=author&query=Bezshyyko%2C+O">O. Bezshyyko</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bingefors%2C+N">N. Bingefors</a>, <a href="/search/physics?searchtype=author&query=Blondel%2C+A">A. Blondel</a>, <a href="/search/physics?searchtype=author&query=Bogomilov%2C+M">M. Bogomilov</a>, <a href="/search/physics?searchtype=author&query=Boyarsky%2C+A">A. Boyarsky</a>, <a href="/search/physics?searchtype=author&query=Bonacorsi%2C+D">D. Bonacorsi</a>, <a href="/search/physics?searchtype=author&query=Bondarenko%2C+D">D. Bondarenko</a> , et al. (211 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1504.04956v1-abstract-short" style="display: inline;"> A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles w… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.04956v1-abstract-full').style.display = 'inline'; document.getElementById('1504.04956v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1504.04956v1-abstract-full" style="display: none;"> A new general purpose fixed target facility is proposed at the CERN SPS accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. Hidden particles are predicted by a large number of models beyond the Standard Model. The high intensity of the SPS 400~GeV beam allows probing a wide variety of models containing light long-lived exotic particles with masses below ${\cal O}$(10)~GeV/c$^2$, including very weakly interacting low-energy SUSY states. The experimental programme of the proposed facility is capable of being extended in the future, e.g. to include direct searches for Dark Matter and Lepton Flavour Violation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1504.04956v1-abstract-full').style.display = 'none'; document.getElementById('1504.04956v1-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 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">Technical Proposal</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-SPSC-2015-016, SPSC-P-350, 8 April 2015 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.0779">arXiv:1410.0779</a> <span> [<a href="https://arxiv.org/pdf/1410.0779">pdf</a>, <a href="https://arxiv.org/format/1410.0779">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1134/S1063779615020185">10.1134/S1063779615020185 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Solar neutrino with Borexino: results and perspectives </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Smirnov%2C+O">O. Smirnov</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Caminata%2C+A">A. Caminata</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Fiorentini%2C+G">G. Fiorentini</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a> , et al. (65 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1410.0779v1-abstract-short" style="display: inline;"> Borexino is a unique detector able to perform measurement of solar neutrinos fluxes in the energy region around 1 MeV or below due to its low level of radioactive background. It was constructed at the LNGS underground laboratory with a goal of solar $^{7}$Be neutrino flux measurement with 5\% precision. The goal has been successfully achieved marking the end of the first stage of the experiment. A… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.0779v1-abstract-full').style.display = 'inline'; document.getElementById('1410.0779v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.0779v1-abstract-full" style="display: none;"> Borexino is a unique detector able to perform measurement of solar neutrinos fluxes in the energy region around 1 MeV or below due to its low level of radioactive background. It was constructed at the LNGS underground laboratory with a goal of solar $^{7}$Be neutrino flux measurement with 5\% precision. The goal has been successfully achieved marking the end of the first stage of the experiment. A number of other important measurements of solar neutrino fluxes have been performed during the first stage. Recently the collaboration conducted successful liquid scintillator repurification campaign aiming to reduce main contaminants in the sub-MeV energy range. With the new levels of radiopurity Borexino can improve existing and challenge a number of new measurements including: improvement of the results on the Solar and terrestrial neutrino fluxes measurements; measurement of pp and CNO solar neutrino fluxes; search for non-standard interactions of neutrino; study of the neutrino oscillations on the short baseline with an artificial neutrino source (search for sterile neutrino) in context of SOX project. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.0779v1-abstract-full').style.display = 'none'; document.getElementById('1410.0779v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 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/1405.7919">arXiv:1405.7919</a> <span> [<a href="https://arxiv.org/pdf/1405.7919">pdf</a>, <a href="https://arxiv.org/format/1405.7919">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> <p class="title is-5 mathjax"> Recent Borexino results and prospects for the near future </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=von+Feilitzsch%2C+F">F. von Feilitzsch</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a>, <a href="/search/physics?searchtype=author&query=Goretti%2C+A">A. Goretti</a> , et al. (63 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="1405.7919v1-abstract-short" style="display: inline;"> The Borexino experiment, located in the Gran Sasso National Laboratory, is an organic liquid scintillator detector conceived for the real time spectroscopy of low energy solar neutrinos. The data taking campaign phase I (2007 - 2010) has allowed the first independent measurements of 7Be, 8B and pep fluxes as well as the first measurement of anti-neutrinos from the earth. After a purification of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.7919v1-abstract-full').style.display = 'inline'; document.getElementById('1405.7919v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.7919v1-abstract-full" style="display: none;"> The Borexino experiment, located in the Gran Sasso National Laboratory, is an organic liquid scintillator detector conceived for the real time spectroscopy of low energy solar neutrinos. The data taking campaign phase I (2007 - 2010) has allowed the first independent measurements of 7Be, 8B and pep fluxes as well as the first measurement of anti-neutrinos from the earth. After a purification of the scintillator, Borexino is now in phase II since 2011. We review here the recent results achieved during 2013, concerning the seasonal modulation in the 7Be signal, the study of cosmogenic backgrounds and the updated measurement of geo-neutrinos. We also review the upcoming measurements from phase II data (pp, pep, CNO) and the project SOX devoted to the study of sterile neutrinos via the use of a 51Cr neutrino source and a 144Ce-144Pr antineutrino source placed in close proximity of the active material. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.7919v1-abstract-full').style.display = 'none'; document.getElementById('1405.7919v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 11 figures. To be published as proceedings of Rencontres de Moriond EW 2014</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1403.1203">arXiv:1403.1203</a> <span> [<a href="https://arxiv.org/pdf/1403.1203">pdf</a>, <a href="https://arxiv.org/format/1403.1203">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Fluid Dynamics">physics.flu-dyn</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Soft Condensed Matter">cond-mat.soft</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/10.1209/0295-5075/105/56006">10.1209/0295-5075/105/56006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Wetting of crossed fibers: multiple steady states and symmetry breaking </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sauret%2C+A">Alban Sauret</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+A+D">Alison D. Bick</a>, <a href="/search/physics?searchtype=author&query=Duprat%2C+C">Camille Duprat</a>, <a href="/search/physics?searchtype=author&query=Stone%2C+H+A">Howard A. Stone</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1403.1203v1-abstract-short" style="display: inline;"> We investigate the wetting properties of the simplest element of an array of random fibers: two rigid fibers crossing with an inclination angle and in contact with a droplet of a perfectly wetting liquid. We show experimentally that the liquid adopts different morphologies when the inclination angle is increased: a column shape, a mixed morphology state where a drop lies at the end of a column, or… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.1203v1-abstract-full').style.display = 'inline'; document.getElementById('1403.1203v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1403.1203v1-abstract-full" style="display: none;"> We investigate the wetting properties of the simplest element of an array of random fibers: two rigid fibers crossing with an inclination angle and in contact with a droplet of a perfectly wetting liquid. We show experimentally that the liquid adopts different morphologies when the inclination angle is increased: a column shape, a mixed morphology state where a drop lies at the end of a column, or a drop centered at the node. An analytical model is provided that predicts the wetting length as well as the presence of a non-symmetric state in the mixed morphology regime. The model also highlights a symmetry breaking at the transition between the column state and the mixed morphology. The possibility to tune the morphology of the liquid could have important implications for drying processes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.1203v1-abstract-full').style.display = 'none'; document.getElementById('1403.1203v1-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 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1308.0443">arXiv:1308.0443</a> <span> [<a href="https://arxiv.org/pdf/1308.0443">pdf</a>, <a href="https://arxiv.org/format/1308.0443">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.89.112007">10.1103/PhysRevD.89.112007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Final results of Borexino Phase-I on low energy solar neutrino spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+Collaboration"> Borexino Collaboration</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. B. Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a> , et al. (65 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="1308.0443v2-abstract-short" style="display: inline;"> Borexino has been running since May 2007 at the LNGS with the primary goal of detecting solar neutrinos. The detector, a large, unsegmented liquid scintillator calorimeter characterized by unprecedented low levels of intrinsic radioactivity, is optimized for the study of the lower energy part of the spectrum. During the Phase-I (2007-2010) Borexino first detected and then precisely measured the fl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.0443v2-abstract-full').style.display = 'inline'; document.getElementById('1308.0443v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1308.0443v2-abstract-full" style="display: none;"> Borexino has been running since May 2007 at the LNGS with the primary goal of detecting solar neutrinos. The detector, a large, unsegmented liquid scintillator calorimeter characterized by unprecedented low levels of intrinsic radioactivity, is optimized for the study of the lower energy part of the spectrum. During the Phase-I (2007-2010) Borexino first detected and then precisely measured the flux of the 7Be solar neutrinos, ruled out any significant day-night asymmetry of their interaction rate, made the first direct observation of the pep neutrinos, and set the tightest upper limit on the flux of CNO neutrinos. In this paper we discuss the signal signature and provide a comprehensive description of the backgrounds, quantify their event rates, describe the methods for their identification, selection or subtraction, and describe data analysis. Key features are an extensive in situ calibration program using radioactive sources, the detailed modeling of the detector response, the ability to define an innermost fiducial volume with extremely low background via software cuts, and the excellent pulse-shape discrimination capability of the scintillator that allows particle identification. We report a measurement of the annual modulation of the 7 Be neutrino interaction rate. The period, the amplitude, and the phase of the observed modulation are consistent with the solar origin of these events, and the absence of their annual modulation is rejected with higher than 99% C.L. The physics implications of phase-I results in the context of the neutrino oscillation physics and solar models are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1308.0443v2-abstract-full').style.display = 'none'; document.getElementById('1308.0443v2-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 August, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 89, 112007 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1304.7381">arXiv:1304.7381</a> <span> [<a href="https://arxiv.org/pdf/1304.7381">pdf</a>, <a href="https://arxiv.org/format/1304.7381">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2013/08/049">10.1088/1475-7516/2013/08/049 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cosmogenic Backgrounds in Borexino at 3800 m water-equivalent depth </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6ger-Neff%2C+M">M. G枚ger-Neff</a>, <a href="/search/physics?searchtype=author&query=Goretti%2C+A">A. Goretti</a> , et al. (64 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="1304.7381v2-abstract-short" style="display: inline;"> The solar neutrino experiment Borexino, which is located in the Gran Sasso underground laboratories, is in a unique position to study muon-induced backgrounds in an organic liquid scintillator. In this study, a large sample of cosmic muons is identified and tracked by a muon veto detector external to the liquid scintillator, and by the specific light patterns observed when muons cross the scintill… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.7381v2-abstract-full').style.display = 'inline'; document.getElementById('1304.7381v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1304.7381v2-abstract-full" style="display: none;"> The solar neutrino experiment Borexino, which is located in the Gran Sasso underground laboratories, is in a unique position to study muon-induced backgrounds in an organic liquid scintillator. In this study, a large sample of cosmic muons is identified and tracked by a muon veto detector external to the liquid scintillator, and by the specific light patterns observed when muons cross the scintillator volume. The yield of muon-induced neutrons is found to be Yn =(3.10+-0.11)10-4 n/(渭 (g/cm2)). The distance profile between the parent muon track and the neutron capture point has the average value 位 = (81.5 +- 2.7)cm. Additionally the yields of a number of cosmogenic radioisotopes are measured for 12N, 12B, 8He, 9C, 9Li, 8B, 6He, 8Li, 11Be, 10C and 11C. All results are compared with Monte Carlo simulation predictions using the Fluka and Geant4 packages. General agreement between data and simulation is observed for the cosmogenic production yields with a few exceptions, the most prominent case being 11C yield for which both codes return about 50% lower values. The predicted 渭-n distance profile and the neutron multiplicity distribution are found to be overall consistent with data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.7381v2-abstract-full').style.display = 'none'; document.getElementById('1304.7381v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2013. </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">26 pages, 13 figures (in 14 files), 4 tables. 3 extra data files. accepted by JCAP</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1303.2571">arXiv:1303.2571</a> <span> [<a href="https://arxiv.org/pdf/1303.2571">pdf</a>, <a href="https://arxiv.org/format/1303.2571">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.physletb.2013.04.030">10.1016/j.physletb.2013.04.030 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of geo-neutrinos from 1353 days of Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Empl%2C+A">A. Empl</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fiorentini%2C+G">G. Fiorentini</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a> , et al. (68 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="1303.2571v2-abstract-short" style="display: inline;"> We present a measurement of the geo--neutrino signal obtained from 1353 days of data with the Borexino detector at Laboratori Nazionali del Gran Sasso in Italy. With a fiducial exposure of (3.69 $\pm$ 0.16) $\times$ $10^{31}$ proton $\times$ year after all selection cuts and background subtraction, we detected (14.3 $\pm$ 4.4) geo-neutrino events assuming a fixed chondritic mass Th/U ratio of 3.9.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.2571v2-abstract-full').style.display = 'inline'; document.getElementById('1303.2571v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1303.2571v2-abstract-full" style="display: none;"> We present a measurement of the geo--neutrino signal obtained from 1353 days of data with the Borexino detector at Laboratori Nazionali del Gran Sasso in Italy. With a fiducial exposure of (3.69 $\pm$ 0.16) $\times$ $10^{31}$ proton $\times$ year after all selection cuts and background subtraction, we detected (14.3 $\pm$ 4.4) geo-neutrino events assuming a fixed chondritic mass Th/U ratio of 3.9. This corresponds to a geo-neutrino signal $S_{geo}$ = (38.8 $\pm$ 12.0) TNU with just a 6 $\times$ $10^{-6}$ probability for a null geo-neutrino measurement. With U and Th left as free parameters in the fit, the relative signals are $S_{\mathrm{Th}}$ = (10.6 $\pm$ 12.7) TNU and $S_\mathrm{U}$ = (26.5 $\pm$ 19.5) TNU. Borexino data alone are compatible with a mantle geo--neutrino signal of (15.4 $\pm$ 12.3) TNU, while a combined analysis with the KamLAND data allows to extract a mantle signal of (14.1 $\pm$ 8.1) TNU. Our measurement of a reactor anti--neutrino signal $S_{react}$ = 84.5$^{+19.3}_{-18.9}$ TNU is in agreement with expectations in the presence of neutrino oscillations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1303.2571v2-abstract-full').style.display = 'none'; document.getElementById('1303.2571v2-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, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2013. </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, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 722 (2013) 295-300 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1212.1332">arXiv:1212.1332</a> <span> [<a href="https://arxiv.org/pdf/1212.1332">pdf</a>, <a href="https://arxiv.org/ps/1212.1332">ps</a>, <a href="https://arxiv.org/format/1212.1332">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Lifetime measurements of 214Po and 212Po with the CTF liquid scintillator detector at LNGS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+Collaboration"> Borexino Collaboration</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Carraro%2C+C">C. Carraro</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=Chubakov%2C+V">V. Chubakov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a> , et al. (70 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="1212.1332v2-abstract-short" style="display: inline;"> We have studied the alpha decays of 214Po into 210Pb and of 212Po into 208Pb tagged by the coincidence with the preceding beta decays from 214Bi and 212Bi, respectively. The employed 222Rn, 232Th, and 220Rn sources were sealed inside quartz vials and inserted in the Counting Test Facility at the underground Gran Sasso National Laboratory in Italy. We find that the mean lifetime of 214Po is (236.00… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1332v2-abstract-full').style.display = 'inline'; document.getElementById('1212.1332v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1212.1332v2-abstract-full" style="display: none;"> We have studied the alpha decays of 214Po into 210Pb and of 212Po into 208Pb tagged by the coincidence with the preceding beta decays from 214Bi and 212Bi, respectively. The employed 222Rn, 232Th, and 220Rn sources were sealed inside quartz vials and inserted in the Counting Test Facility at the underground Gran Sasso National Laboratory in Italy. We find that the mean lifetime of 214Po is (236.00 +- 0.42(stat) +- 0.15(syst)) 渭s and that of 212Po is (425.1 +- 0.9(stat) +- 1.2(syst)) ns. Our results, obtained from data with signal-to-background ratio larger than 1000, reduce the overall uncertainties and are compatible with previous measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1332v2-abstract-full').style.display = 'none'; document.getElementById('1212.1332v2-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 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 December, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2012. </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">RevTex, 11 pages, 5 figures, 3 tables. This second version matches the one accepted for publication in EPJA: minor stylistic changes plus a discussion of calibration of TDC time scale</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1207.4816">arXiv:1207.4816</a> <span> [<a href="https://arxiv.org/pdf/1207.4816">pdf</a>, <a href="https://arxiv.org/format/1207.4816">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </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/10.1088/1748-0221/7/10/P10018">10.1088/1748-0221/7/10/P10018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Borexino calibrations: Hardware, Methods, and Results </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+collaboration"> Borexino collaboration</a>, <a href="/search/physics?searchtype=author&query=Back%2C+H">H. Back</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Carraro%2C+C">C. Carraro</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=von+Feilitzsch%2C+F">F. von Feilitzsch</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+G">G. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a> , et al. (71 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="1207.4816v2-abstract-short" style="display: inline;"> Borexino was the first experiment to detect solar neutrinos in real-time in the sub-MeV region. In order to achieve high precision in the determination of neutrino rates, the detector design includes an internal and an external calibration system. This paper describes both calibration systems and the calibration campaigns that were carried out in the period between 2008 and 2011. We discuss some o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.4816v2-abstract-full').style.display = 'inline'; document.getElementById('1207.4816v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1207.4816v2-abstract-full" style="display: none;"> Borexino was the first experiment to detect solar neutrinos in real-time in the sub-MeV region. In order to achieve high precision in the determination of neutrino rates, the detector design includes an internal and an external calibration system. This paper describes both calibration systems and the calibration campaigns that were carried out in the period between 2008 and 2011. We discuss some of the results and show that the calibration procedures preserved the radiopurity of the scintillator. The calibrations provided a detailed understanding of the detector response and led to a significant reduction of the systematic uncertainties in the Borexino measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.4816v2-abstract-full').style.display = 'none'; document.getElementById('1207.4816v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 7 (2012) P10018 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1202.6403">arXiv:1202.6403</a> <span> [<a href="https://arxiv.org/pdf/1202.6403">pdf</a>, <a href="https://arxiv.org/format/1202.6403">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="Atmospheric and Oceanic Physics">physics.ao-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/10.1088/1475-7516/2012/05/015">10.1088/1475-7516/2012/05/015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cosmic-muon flux and annual modulation in Borexino at 3800 m water-equivalent depth </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonfini%2C+G">G. Bonfini</a>, <a href="/search/physics?searchtype=author&query=Bravo%2C+D">D. Bravo</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Carraro%2C+C">C. Carraro</a>, <a href="/search/physics?searchtype=author&query=Cavalcante%2C+P">P. Cavalcante</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=von+Feilitzsch%2C+F">F. von Feilitzsch</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a> , et al. (65 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="1202.6403v3-abstract-short" style="display: inline;"> We have measured the muon flux at the underground Gran Sasso National Laboratory (3800 m w.e.) to be (3.41 \pm 0.01) \times 10-4m-2s-1 using four years of Borexino data. A modulation of this signal is observed with a period of (366\pm3) days and a relative amplitude of (1.29 \pm 0.07)%. The measured phase is (179 \pm 6) days, corresponding to a maximum on the 28th of June. Using the most complete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.6403v3-abstract-full').style.display = 'inline'; document.getElementById('1202.6403v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1202.6403v3-abstract-full" style="display: none;"> We have measured the muon flux at the underground Gran Sasso National Laboratory (3800 m w.e.) to be (3.41 \pm 0.01) \times 10-4m-2s-1 using four years of Borexino data. A modulation of this signal is observed with a period of (366\pm3) days and a relative amplitude of (1.29 \pm 0.07)%. The measured phase is (179 \pm 6) days, corresponding to a maximum on the 28th of June. Using the most complete atmospheric data models available, muon rate fluctuations are shown to be positively correlated with atmospheric temperature, with an effective coefficient 伪T = 0.93 \pm 0.04. This result represents the most precise study of the muon flux modulation for this site and is in good agreement with expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1202.6403v3-abstract-full').style.display = 'none'; document.getElementById('1202.6403v3-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 November, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 February, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2012. </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">14 pages, 8 figures, published on JCAP as JCAP05(2012)015 on May 15th 2012</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JCAP05(2012)015 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1104.5620">arXiv:1104.5620</a> <span> [<a href="https://arxiv.org/pdf/1104.5620">pdf</a>, <a href="https://arxiv.org/format/1104.5620">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy 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.2012.02.011">10.1016/j.astropartphys.2012.02.011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The next-generation liquid-scintillator neutrino observatory LENA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wurm%2C+M">Michael Wurm</a>, <a href="/search/physics?searchtype=author&query=Beacom%2C+J+F">John F. Beacom</a>, <a href="/search/physics?searchtype=author&query=Bezrukov%2C+L+B">Leonid B. Bezrukov</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">Daniel Bick</a>, <a href="/search/physics?searchtype=author&query=Bl%C3%BCmer%2C+J">Johannes Bl眉mer</a>, <a href="/search/physics?searchtype=author&query=Choubey%2C+S">Sandhya Choubey</a>, <a href="/search/physics?searchtype=author&query=Ciemniak%2C+C">Christian Ciemniak</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">Davide D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Dasgupta%2C+B">Basudeb Dasgupta</a>, <a href="/search/physics?searchtype=author&query=Dighe%2C+A">Amol Dighe</a>, <a href="/search/physics?searchtype=author&query=Domogatsky%2C+G">Grigorij Domogatsky</a>, <a href="/search/physics?searchtype=author&query=Dye%2C+S">Steve Dye</a>, <a href="/search/physics?searchtype=author&query=Eliseev%2C+S">Sergey Eliseev</a>, <a href="/search/physics?searchtype=author&query=Enqvist%2C+T">Timo Enqvist</a>, <a href="/search/physics?searchtype=author&query=Erykalov%2C+A">Alexey Erykalov</a>, <a href="/search/physics?searchtype=author&query=von+Feilitzsch%2C+F">Franz von Feilitzsch</a>, <a href="/search/physics?searchtype=author&query=Fiorentini%2C+G">Gianni Fiorentini</a>, <a href="/search/physics?searchtype=author&query=Fischer%2C+T">Tobias Fischer</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6ger-Neff%2C+M">Marianne G枚ger-Neff</a>, <a href="/search/physics?searchtype=author&query=Grabmayr%2C+P">Peter Grabmayr</a>, <a href="/search/physics?searchtype=author&query=Hagner%2C+C">Caren Hagner</a>, <a href="/search/physics?searchtype=author&query=Hellgartner%2C+D">Dominikus Hellgartner</a>, <a href="/search/physics?searchtype=author&query=Hissa%2C+J">Johannes Hissa</a>, <a href="/search/physics?searchtype=author&query=Horiuchi%2C+S">Shunsaku Horiuchi</a>, <a href="/search/physics?searchtype=author&query=Janka%2C+H">Hans-Thomas Janka</a> , et al. (52 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="1104.5620v3-abstract-short" style="display: inline;"> We propose the liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) as a next-generation neutrino observatory on the scale of 50 kt. The outstanding successes of the Borexino and KamLAND experiments demonstrate the large potential of liquid-scintillator detectors in low-energy neutrino physics. LENA's physics objectives comprise the observation of astrophysical and terrestrial neutrin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.5620v3-abstract-full').style.display = 'inline'; document.getElementById('1104.5620v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1104.5620v3-abstract-full" style="display: none;"> We propose the liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) as a next-generation neutrino observatory on the scale of 50 kt. The outstanding successes of the Borexino and KamLAND experiments demonstrate the large potential of liquid-scintillator detectors in low-energy neutrino physics. LENA's physics objectives comprise the observation of astrophysical and terrestrial neutrino sources as well as the investigation of neutrino oscillations. In the GeV energy range, the search for proton decay and long-baseline neutrino oscillation experiments complement the low-energy program. Based on the considerable expertise present in European and international research groups, the technical design is sufficiently mature to allow for an early start of detector realization. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.5620v3-abstract-full').style.display = 'none'; document.getElementById('1104.5620v3-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 March, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 April, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2011. </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">Whitepaper for the LENA low-energy neutrino detector, 67 pages, 32 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/1101.3101">arXiv:1101.3101</a> <span> [<a href="https://arxiv.org/pdf/1101.3101">pdf</a>, <a href="https://arxiv.org/format/1101.3101">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1088/1748-0221/6/05/P05005">10.1088/1748-0221/6/05/P05005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Muon and Cosmogenic Neutron Detection in Borexino </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Borexino+Collaboration"> Borexino Collaboration</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+G">G. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benziger%2C+J">J. Benziger</a>, <a href="/search/physics?searchtype=author&query=Bick%2C+D">D. Bick</a>, <a href="/search/physics?searchtype=author&query=Bonetti%2C+S">S. Bonetti</a>, <a href="/search/physics?searchtype=author&query=Avanzini%2C+M+B">M. Buizza Avanzini</a>, <a href="/search/physics?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/physics?searchtype=author&query=Cadonati%2C+L">L. Cadonati</a>, <a href="/search/physics?searchtype=author&query=Calaprice%2C+F">F. Calaprice</a>, <a href="/search/physics?searchtype=author&query=Carraro%2C+C">C. Carraro</a>, <a href="/search/physics?searchtype=author&query=Chavarria%2C+A">A. Chavarria</a>, <a href="/search/physics?searchtype=author&query=Chepurnov%2C+A">A. Chepurnov</a>, <a href="/search/physics?searchtype=author&query=D%27Angelo%2C+D">D. D'Angelo</a>, <a href="/search/physics?searchtype=author&query=Davini%2C+S">S. Davini</a>, <a href="/search/physics?searchtype=author&query=Derbin%2C+A">A. Derbin</a>, <a href="/search/physics?searchtype=author&query=Etenko%2C+A">A. Etenko</a>, <a href="/search/physics?searchtype=author&query=von+Feilitzsch%2C+F">F. von Feilitzsch</a>, <a href="/search/physics?searchtype=author&query=Fomenko%2C+K">K. Fomenko</a>, <a href="/search/physics?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/physics?searchtype=author&query=Galbiati%2C+C">C. Galbiati</a>, <a href="/search/physics?searchtype=author&query=Gazzana%2C+S">S. Gazzana</a>, <a href="/search/physics?searchtype=author&query=Ghiano%2C+C">C. Ghiano</a>, <a href="/search/physics?searchtype=author&query=Giammarchi%2C+M">M. Giammarchi</a>, <a href="/search/physics?searchtype=author&query=Goeger-Neff%2C+M">M. Goeger-Neff</a>, <a href="/search/physics?searchtype=author&query=Goretti%2C+A">A. Goretti</a> , et al. (64 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="1101.3101v2-abstract-short" style="display: inline;"> Borexino, a liquid scintillator detector at LNGS, is designed for the detection of neutrinos and antineutrinos from the Sun, supernovae, nuclear reactors, and the Earth. The feeble nature of these signals requires a strong suppression of backgrounds below a few MeV. Very low intrinsic radiogenic contamination of all detector components needs to be accompanied by the efficient identification of muo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1101.3101v2-abstract-full').style.display = 'inline'; document.getElementById('1101.3101v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1101.3101v2-abstract-full" style="display: none;"> Borexino, a liquid scintillator detector at LNGS, is designed for the detection of neutrinos and antineutrinos from the Sun, supernovae, nuclear reactors, and the Earth. The feeble nature of these signals requires a strong suppression of backgrounds below a few MeV. Very low intrinsic radiogenic contamination of all detector components needs to be accompanied by the efficient identification of muons and of muon-induced backgrounds. Muons produce unstable nuclei by spallation processes along their trajectory through the detector whose decays can mimic the expected signals; for isotopes with half-lives longer than a few seconds, the dead time induced by a muon-related veto becomes unacceptably long, unless its application can be restricted to a sub-volume along the muon track. Consequently, not only the identification of muons with very high efficiency but also a precise reconstruction of their tracks is of primary importance for the physics program of the experiment. The Borexino inner detector is surrounded by an outer water-Cherenkov detector that plays a fundamental role in accomplishing this task. The detector design principles and their implementation are described. The strategies adopted to identify muons are reviewed and their efficiency is evaluated. The overall muon veto efficiency is found to be 99.992% or better. Ad-hoc track reconstruction algorithms developed are presented. Their performance is tested against muon events of known direction such as those from the CNGS neutrino beam, test tracks available from a dedicated External Muon Tracker and cosmic muons whose angular distribution reflects the local overburden profile. The achieved angular resolution is 3-5 deg and the lateral resolution is 35-50 cm, depending on the impact parameter of the crossing muon. The methods implemented to efficiently tag cosmogenic neutrons are also presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1101.3101v2-abstract-full').style.display = 'none'; document.getElementById('1101.3101v2-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 February, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 January, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2011. </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. 32 figures on 37 files. Uses JINST.cls. 1 auxiliary file (defines.tex) with TEX macros. submitted to Journal of Instrumentation</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 6:P05005,2011 </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 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