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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2502.01443">arXiv:2502.01443</a> <span> [<a href="https://arxiv.org/pdf/2502.01443">pdf</a>, <a href="https://arxiv.org/format/2502.01443">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Study of tau neutrinos and non-unitary neutrino mixing with the first six detection units of KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Barda%C4%8Dov%C3%A1%2C+Z">Z. Barda膷ov谩</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Gualandi%2C+F+B">F. Benfenati Gualandi</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a> , et al. (252 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="2502.01443v2-abstract-short" style="display: inline;"> Oscillations of atmospheric muon and electron neutrinos produce tau neutrinos with energies in the GeV range, which can be observed by the ORCA detector of the KM3NeT neutrino telescope in the Mediterranean Sea. First measurements with ORCA6, an early subarray corresponding to about 5$\%$ of the final detector, are presented. A sample of 5828 neutrino candidates has been selected from the analysed… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.01443v2-abstract-full').style.display = 'inline'; document.getElementById('2502.01443v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.01443v2-abstract-full" style="display: none;"> Oscillations of atmospheric muon and electron neutrinos produce tau neutrinos with energies in the GeV range, which can be observed by the ORCA detector of the KM3NeT neutrino telescope in the Mediterranean Sea. First measurements with ORCA6, an early subarray corresponding to about 5$\%$ of the final detector, are presented. A sample of 5828 neutrino candidates has been selected from the analysed exposure of 433 kton-years. The $谓_蟿$ normalisation, defined as the ratio between the number of observed and expected tau neutrino events, is measured to be $S_蟿= 0.48^{+0.5}_{-0.33}$. This translates into a $谓_蟿$ charged-current cross section measurement of $蟽_蟿^{\text{meas}} = (2.5 ^{+2.6}_{-1.8}) \times 10^{-38}$ cm$^{2}$ nucleon$^{-1}$ at the median $谓_蟿$ energy of 20.3 GeV. The result is consistent with the measurements of other experiments. In addition, the current limit on the non-unitarity parameter affecting the $蟿$-row of the neutrino mixing matrix was improved, with $伪_{33}>$ 0.95 at the 95$\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.01443v2-abstract-full').style.display = 'none'; document.getElementById('2502.01443v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2025. </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">25 pages, 8 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/2501.11336">arXiv:2501.11336</a> <span> [<a href="https://arxiv.org/pdf/2501.11336">pdf</a>, <a href="https://arxiv.org/format/2501.11336">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Probing invisible neutrino decay with the first six detection units of KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Barda%C4%8Dov%C3%A1%2C+Z">Z. Barda膷ov谩</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Gualandi%2C+F+B">F. Benfenati Gualandi</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a> , et al. (251 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="2501.11336v1-abstract-short" style="display: inline;"> In the era of precision measurements of neutrino oscillation parameters, it is necessary for experiments to disentangle discrepancies that may indicate physics beyond the Standard Model in the neutrino sector. KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study the oscillations of atmospheric n… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.11336v1-abstract-full').style.display = 'inline'; document.getElementById('2501.11336v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.11336v1-abstract-full" style="display: none;"> In the era of precision measurements of neutrino oscillation parameters, it is necessary for experiments to disentangle discrepancies that may indicate physics beyond the Standard Model in the neutrino sector. KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study the oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on the initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photosensors. A high-purity neutrino sample was extracted during 2020 and 2021, corresponding to an exposure of 433 kton-years. This sample is analysed following a binned log-likelihood approach to search for invisible neutrino decay, in a three-flavour neutrino oscillation scenario, where the third neutrino mass state $谓_3$ decays into an invisible state, e.g. a sterile neutrino. The resulting best fit of the invisible neutrino decay parameter is $伪_3 = 0.92^{+1.08}_{-0.57}\times 10^{-4}~\mathrm{eV^2}$, corresponding to a scenario with $胃_{23}$ in the second octant and normal neutrino mass ordering. The results are consistent with the Standard Model, within a $2.1\,蟽$ interval. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.11336v1-abstract-full').style.display = 'none'; document.getElementById('2501.11336v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </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, 8 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/2501.09988">arXiv:2501.09988</a> <span> [<a href="https://arxiv.org/pdf/2501.09988">pdf</a>, <a href="https://arxiv.org/format/2501.09988">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"> Fluorescence emission of the JUNO liquid scintillator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">M. Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Houria%2C+F">F. Houria</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraro%2C+F">F. Ferraro</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Brigatti%2C+A">A. Brigatti</a>, <a href="/search/hep-ex?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/hep-ex?searchtype=author&query=Caslini%2C+A">A. Caslini</a>, <a href="/search/hep-ex?searchtype=author&query=Landini%2C+C">C. Landini</a>, <a href="/search/hep-ex?searchtype=author&query=Lombardi%2C+P">P. Lombardi</a>, <a href="/search/hep-ex?searchtype=author&query=Pelicci%2C+L">L. Pelicci</a>, <a href="/search/hep-ex?searchtype=author&query=Percalli%2C+E">E. Percalli</a>, <a href="/search/hep-ex?searchtype=author&query=Ranucci%2C+G">G. Ranucci</a>, <a href="/search/hep-ex?searchtype=author&query=Re%2C+A+C">A. C. Re</a>, <a href="/search/hep-ex?searchtype=author&query=Clementi%2C+C">C. Clementi</a>, <a href="/search/hep-ex?searchtype=author&query=Ortica%2C+F">F. Ortica</a>, <a href="/search/hep-ex?searchtype=author&query=Romani%2C+A">A. Romani</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Giammarchi%2C+M+G">M. G. Giammarchi</a>, <a href="/search/hep-ex?searchtype=author&query=Miramonti%2C+L">L. Miramonti</a>, <a href="/search/hep-ex?searchtype=author&query=Saggese%2C+P">P. Saggese</a>, <a href="/search/hep-ex?searchtype=author&query=Torri%2C+M+D+C">M. D. C. Torri</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">G. Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">A. Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">A. Bergnoli</a> , et al. (43 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="2501.09988v2-abstract-short" style="display: inline;"> JUNO is a huge neutrino detector that will use 20 kton of organic liquid scintillator as its detection medium. The scintillator is a mixture of linear alkyl benzene (LAB), 2.5 g/L of 2,5-diphenyloxazole (PPO) and 3 mg/L of 1,4-Bis(2-methylstyryl)benzene (Bis-MSB). The main goal of JUNO is to determine the Neutrino Mass Ordering [1, 2, 3]. In order to achieve this purpose, good energy and position… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.09988v2-abstract-full').style.display = 'inline'; document.getElementById('2501.09988v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.09988v2-abstract-full" style="display: none;"> JUNO is a huge neutrino detector that will use 20 kton of organic liquid scintillator as its detection medium. The scintillator is a mixture of linear alkyl benzene (LAB), 2.5 g/L of 2,5-diphenyloxazole (PPO) and 3 mg/L of 1,4-Bis(2-methylstyryl)benzene (Bis-MSB). The main goal of JUNO is to determine the Neutrino Mass Ordering [1, 2, 3]. In order to achieve this purpose, good energy and position reconstruction is required, hence a complete understanding of the optical characteristics of the liquid scintillator is mandatory. In this paper we present the measurements on the JUNO scintillator emission spectrum, absorption length and fluorescence time distribution performed respectively with a spectrofluorimeter, a spectrophotometer and a custom made setup <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.09988v2-abstract-full').style.display = 'none'; document.getElementById('2501.09988v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.19078">arXiv:2411.19078</a> <span> [<a href="https://arxiv.org/pdf/2411.19078">pdf</a>, <a href="https://arxiv.org/format/2411.19078">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Barda%C4%8Dov%C3%A1%2C+Z">Z. Barda膷ov谩</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a> , et al. (239 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="2411.19078v2-abstract-short" style="display: inline;"> KM3NeT/ORCA is an underwater neutrino telescope under construction in the Mediterranean Sea. Its primary scientific goal is to measure the atmospheric neutrino oscillation parameters and to determine the neutrino mass ordering. ORCA can constrain the oscillation parameters $螖m^{2}_{31}$ and $胃_{23}$ by reconstructing the arrival direction and energy of multi-GeV neutrinos crossing the Earth. Searc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19078v2-abstract-full').style.display = 'inline'; document.getElementById('2411.19078v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.19078v2-abstract-full" style="display: none;"> KM3NeT/ORCA is an underwater neutrino telescope under construction in the Mediterranean Sea. Its primary scientific goal is to measure the atmospheric neutrino oscillation parameters and to determine the neutrino mass ordering. ORCA can constrain the oscillation parameters $螖m^{2}_{31}$ and $胃_{23}$ by reconstructing the arrival direction and energy of multi-GeV neutrinos crossing the Earth. Searches for deviations from the Standard Model of particle physics in the forward scattering of neutrinos inside Earth matter, produced by Non-Standard Interactions, can be conducted by investigating distortions of the standard oscillation pattern of neutrinos of all flavours. This work reports on the results of the search for non-standard neutrino interactions using the first six detection units of ORCA and 433 kton-years of exposure. No significant deviation from standard interactions was found in a sample of 5828 events reconstructed in the 1 GeV$-$1 TeV energy range. The flavour structure of the non-standard coupling was constrained at 90\% confidence level to be $|\varepsilon_{渭蟿} | \leq 5.4 \times 10^{-3}$, $|\varepsilon_{e蟿} | \leq 7.4 \times 10^{-2}$, $|\varepsilon_{e渭} | \leq 5.6 \times 10^{-2}$ and $-0.015 \leq \varepsilon_{蟿蟿} - \varepsilon_{渭渭} \leq 0.017$. The results are comparable to the current most stringent limits placed on the parameters by other experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.19078v2-abstract-full').style.display = 'none'; document.getElementById('2411.19078v2-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.24115">arXiv:2410.24115</a> <span> [<a href="https://arxiv.org/pdf/2410.24115">pdf</a>, <a href="https://arxiv.org/format/2410.24115">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="Computational Physics">physics.comp-ph</span> </div> </div> <p class="title is-5 mathjax"> gSeaGen code by KM3NeT: an efficient tool to propagate muons simulated with CORSIKA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Atmani%2C+H">H. Atmani</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Barda%C4%8Dov%C3%A1%2C+Z">Z. Barda膷ov谩</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a> , et al. (238 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="2410.24115v4-abstract-short" style="display: inline;"> The KM3NeT Collaboration has tackled a common challenge faced by the astroparticle physics community, namely adapting the experiment-specific simulation software to work with the CORSIKA air shower simulation output. The proposed solution is an extension of the open-source code gSeaGen, allowing for the transport of muons generated by CORSIKA to a detector of any size at an arbitrary depth. The gS… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.24115v4-abstract-full').style.display = 'inline'; document.getElementById('2410.24115v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.24115v4-abstract-full" style="display: none;"> The KM3NeT Collaboration has tackled a common challenge faced by the astroparticle physics community, namely adapting the experiment-specific simulation software to work with the CORSIKA air shower simulation output. The proposed solution is an extension of the open-source code gSeaGen, allowing for the transport of muons generated by CORSIKA to a detector of any size at an arbitrary depth. The gSeaGen code was not only extended in terms of functionalities but also underwent a thorough redesign of the muon propagation routine, resulting in a more accurate and efficient simulation. This paper presents the capabilities of the new gSeaGen code as well as prospects for further developments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.24115v4-abstract-full').style.display = 'none'; document.getElementById('2410.24115v4-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">27 pages, 13 figures, submitted to Computer Physics Communications</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.01388">arXiv:2410.01388</a> <span> [<a href="https://arxiv.org/pdf/2410.01388">pdf</a>, <a href="https://arxiv.org/format/2410.01388">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Search for quantum decoherence in neutrino oscillations with six detection units of KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Atmani%2C+H">H. Atmani</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Bardacova%2C+Z">Z. Bardacova</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a> , et al. (237 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="2410.01388v2-abstract-short" style="display: inline;"> Neutrinos described as an open quantum system may interact with the environment which introduces stochastic perturbations to their quantum phase. This mechanism leads to a loss of coherence along the propagation of the neutrino $-$ a phenomenon commonly referred to as decoherence $-$ and ultimately, to a modification of the oscillation probabilities. Fluctuations in space-time, as envisaged by var… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.01388v2-abstract-full').style.display = 'inline'; document.getElementById('2410.01388v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.01388v2-abstract-full" style="display: none;"> Neutrinos described as an open quantum system may interact with the environment which introduces stochastic perturbations to their quantum phase. This mechanism leads to a loss of coherence along the propagation of the neutrino $-$ a phenomenon commonly referred to as decoherence $-$ and ultimately, to a modification of the oscillation probabilities. Fluctuations in space-time, as envisaged by various theories of quantum gravity, are a potential candidate for a decoherence-inducing environment. Consequently, the search for decoherence provides a rare opportunity to investigate quantum gravitational effects which are usually beyond the reach of current experiments. In this work, quantum decoherence effects are searched for in neutrino data collected by the KM3NeT/ORCA detector from January 2020 to November 2021. The analysis focuses on atmospheric neutrinos within the energy range of a few GeV to $100\,\mathrm{GeV}$. Adopting the open quantum system framework, decoherence is described in a phenomenological manner with the strength of the effect given by the parameters $螕_{21}$ and $螕_{31}$. Following previous studies, a dependence of the type $螕_{ij} \propto (E/E_0)^n$ on the neutrino energy is assumed and the cases $n = -2,-1$ are explored. No significant deviation with respect to the standard oscillation hypothesis is observed. Therefore, $90\,\%$ CL upper limits are estimated as $螕_{21} < 4.6\cdot 10^{-21}\,$GeV and $螕_{31} < 8.4\cdot 10^{-21}\,$GeV for $n = -2$, and $螕_{21} < 1.9\cdot 10^{-22}\,$GeV and $螕_{31} < 2.7\cdot 10^{-22}\,$GeV for $n = -1$, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.01388v2-abstract-full').style.display = 'none'; document.getElementById('2410.01388v2-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 5 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/2408.07015">arXiv:2408.07015</a> <span> [<a href="https://arxiv.org/pdf/2408.07015">pdf</a>, <a href="https://arxiv.org/format/2408.07015">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Measurement of neutrino oscillation parameters with the first six detection units of KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alhebsi%2C+A+R">A. R. Alhebsi</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Aphecetche%2C+L">L. Aphecetche</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Atmani%2C+H">H. Atmani</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Badaracco%2C+F">F. Badaracco</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Barda%C4%8Dov%C3%A1%2C+Z">Z. Barda膷ov谩</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Bariego-Quintana%2C+A">A. Bariego-Quintana</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Benhassi%2C+M">M. Benhassi</a>, <a href="/search/hep-ex?searchtype=author&query=Bennani%2C+M">M. Bennani</a>, <a href="/search/hep-ex?searchtype=author&query=Benoit%2C+D+M">D. M. Benoit</a> , et al. (238 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="2408.07015v2-abstract-short" style="display: inline;"> KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.07015v2-abstract-full').style.display = 'inline'; document.getElementById('2408.07015v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.07015v2-abstract-full" style="display: none;"> KM3NeT/ORCA is a water Cherenkov neutrino detector under construction and anchored at the bottom of the Mediterranean Sea. The detector is designed to study oscillations of atmospheric neutrinos and determine the neutrino mass ordering. This paper focuses on an initial configuration of ORCA, referred to as ORCA6, which comprises six out of the foreseen 115 detection units of photo-sensors. A high-purity neutrino sample was extracted, corresponding to an exposure of 433 kton-years. The sample of 5828 neutrino candidates is analysed following a binned log-likelihood method in the reconstructed energy and cosine of the zenith angle. The atmospheric oscillation parameters are measured to be $\sin^2胃_{23}= 0.51^{+0.04}_{-0.05}$, and $ 螖m^2_{31} = 2.18^{+0.25}_{-0.35}\times 10^{-3}~\mathrm{eV^2} \cup \{-2.25,-1.76\}\times 10^{-3}~\mathrm{eV^2}$ at 68\% CL. The inverted neutrino mass ordering hypothesis is disfavoured with a p-value of 0.25. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.07015v2-abstract-full').style.display = 'none'; document.getElementById('2408.07015v2-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 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 pages, 12 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/2406.12901">arXiv:2406.12901</a> <span> [<a href="https://arxiv.org/pdf/2406.12901">pdf</a>, <a href="https://arxiv.org/format/2406.12901">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="Machine Learning">cs.LG</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="Data Analysis, Statistics and Probability">physics.data-an</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.2024.139141">10.1016/j.physletb.2024.139141 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Interpretable machine learning approach for electron antineutrino selection in a large liquid scintillator detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Gavrikov%2C+A">A. Gavrikov</a>, <a href="/search/hep-ex?searchtype=author&query=Cerrone%2C+V">V. Cerrone</a>, <a href="/search/hep-ex?searchtype=author&query=Serafini%2C+A">A. Serafini</a>, <a href="/search/hep-ex?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ex?searchtype=author&query=Garfagnini%2C+A">A. Garfagnini</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">M. Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Jelmini%2C+B">B. Jelmini</a>, <a href="/search/hep-ex?searchtype=author&query=Lastrucci%2C+L">L. Lastrucci</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">G. Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">A. Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">M. Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">A. Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/hep-ex?searchtype=author&query=Brigatti%2C+A">A. Brigatti</a>, <a href="/search/hep-ex?searchtype=author&query=Bruno%2C+R">R. Bruno</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/hep-ex?searchtype=author&query=Cammi%2C+A">A. Cammi</a>, <a href="/search/hep-ex?searchtype=author&query=Caruso%2C+R">R. Caruso</a>, <a href="/search/hep-ex?searchtype=author&query=Chiesa%2C+D">D. Chiesa</a>, <a href="/search/hep-ex?searchtype=author&query=Clementi%2C+C">C. Clementi</a>, <a href="/search/hep-ex?searchtype=author&query=Dusini%2C+S">S. Dusini</a> , et al. (43 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="2406.12901v2-abstract-short" style="display: inline;"> Several neutrino detectors, KamLAND, Daya Bay, Double Chooz, RENO, and the forthcoming large-scale JUNO, rely on liquid scintillator to detect reactor antineutrino interactions. In this context, inverse beta decay represents the golden channel for antineutrino detection, providing a pair of correlated events, thus a strong experimental signature to distinguish the signal from a variety of backgrou… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12901v2-abstract-full').style.display = 'inline'; document.getElementById('2406.12901v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.12901v2-abstract-full" style="display: none;"> Several neutrino detectors, KamLAND, Daya Bay, Double Chooz, RENO, and the forthcoming large-scale JUNO, rely on liquid scintillator to detect reactor antineutrino interactions. In this context, inverse beta decay represents the golden channel for antineutrino detection, providing a pair of correlated events, thus a strong experimental signature to distinguish the signal from a variety of backgrounds. However, given the low cross-section of antineutrino interactions, the development of a powerful event selection algorithm becomes imperative to achieve effective discrimination between signal and backgrounds. In this study, we introduce a machine learning (ML) model to achieve this goal: a fully connected neural network as a powerful signal-background discriminator for a large liquid scintillator detector. We demonstrate, using the JUNO detector as an example, that, despite the already high efficiency of a cut-based approach, the presented ML model can further improve the overall event selection efficiency. Moreover, it allows for the retention of signal events at the detector edges that would otherwise be rejected because of the overwhelming amount of background events in that region. We also present the first interpretable analysis of the ML approach for event selection in reactor neutrino experiments. This method provides insights into the decision-making process of the model and offers valuable information for improving and updating traditional event selection approaches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.12901v2-abstract-full').style.display = 'none'; document.getElementById('2406.12901v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This is a post-peer-review, pre-copyedit version of an article published in Phys. Lett. B. The final published version is available online: https://www.sciencedirect.com/science/article/pii/S0370269324006993</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 860, 139141 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.01381">arXiv:2406.01381</a> <span> [<a href="https://arxiv.org/pdf/2406.01381">pdf</a>, <a href="https://arxiv.org/format/2406.01381">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"> Distillation and Stripping purification plants for JUNO liquid scintillator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Landini%2C+C">C. Landini</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">M. Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Lombardi%2C+P">P. Lombardi</a>, <a href="/search/hep-ex?searchtype=author&query=Brigatti%2C+A">A. Brigatti</a>, <a href="/search/hep-ex?searchtype=author&query=Montuschi%2C+M">M. Montuschi</a>, <a href="/search/hep-ex?searchtype=author&query=Parmeggiano%2C+S">S. Parmeggiano</a>, <a href="/search/hep-ex?searchtype=author&query=Ranucci%2C+G">G. Ranucci</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/hep-ex?searchtype=author&query=Giammarchi%2C+M+G">M. G. Giammarchi</a>, <a href="/search/hep-ex?searchtype=author&query=Miramonti%2C+L">L. Miramonti</a>, <a href="/search/hep-ex?searchtype=author&query=Percalli%2C+E">E. Percalli</a>, <a href="/search/hep-ex?searchtype=author&query=Re%2C+A+C">A. C. Re</a>, <a href="/search/hep-ex?searchtype=author&query=Saggese%2C+P">P. Saggese</a>, <a href="/search/hep-ex?searchtype=author&query=Torri%2C+M+D+C">M. D. C. Torri</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">G. Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">A. Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">A. Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Borghesi%2C+M">M. Borghesi</a>, <a href="/search/hep-ex?searchtype=author&query=Brugnera%2C+R">R. Brugnera</a>, <a href="/search/hep-ex?searchtype=author&query=Bruno%2C+R">R. Bruno</a>, <a href="/search/hep-ex?searchtype=author&query=Budano%2C+A">A. Budano</a>, <a href="/search/hep-ex?searchtype=author&query=Cammi%2C+A">A. Cammi</a> , et al. (42 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="2406.01381v1-abstract-short" style="display: inline;"> The optical and radiochemical purification of the scintillating liquid, which will fill the central detector of the JUNO experiment, plays a crucial role in achieving its scientific goals. Given its gigantic mass and dimensions and an unprecedented target value of about 3% @ 1 MeV in energy resolution, JUNO has set severe requirements on the parameters of its scintillator, such as attenuation leng… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01381v1-abstract-full').style.display = 'inline'; document.getElementById('2406.01381v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.01381v1-abstract-full" style="display: none;"> The optical and radiochemical purification of the scintillating liquid, which will fill the central detector of the JUNO experiment, plays a crucial role in achieving its scientific goals. Given its gigantic mass and dimensions and an unprecedented target value of about 3% @ 1 MeV in energy resolution, JUNO has set severe requirements on the parameters of its scintillator, such as attenuation length (Lat>20 m at 430 nm), transparency, light yield, and content of radioactive contaminants (238U,232Th<10-15 g/g). To accomplish these needs, the scintillator will be processed using several purification methods, including distillation in partial vacuum and gas stripping, which are performed in two large scale plants installed at the JUNO site. In this paper, layout, operating principles, and technical aspects which have driven the design and construction of the distil- lation and gas stripping plants are reviewed. The distillation is effective in enhancing the optical properties and removing heavy radio-impurities (238U,232Th, 40K), while the stripping process exploits pure water steam and high-purity nitrogen to extract gaseous contaminants (222Rn, 39Ar, 85Kr, O2) from the scintillator. The plant operating parameters have been tuned during the recent com- missioning phase at the JUNO site and several QA/QC measurements and tests have been performed to evaluate the performances of the plants. Some preliminary results on the efficiency of these purification processes will be shown. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.01381v1-abstract-full').style.display = 'none'; document.getElementById('2406.01381v1-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 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 7 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/2405.19879">arXiv:2405.19879</a> <span> [<a href="https://arxiv.org/pdf/2405.19879">pdf</a>, <a href="https://arxiv.org/format/2405.19879">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2024.169730">10.1016/j.nima.2024.169730 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Refractive index in the JUNO liquid scintillator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Zhang%2C+H+S">H. S. Zhang</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">M. Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Cialdi%2C+S">S. Cialdi</a>, <a href="/search/hep-ex?searchtype=author&query=Yang%2C+C+X">C. X. Yang</a>, <a href="/search/hep-ex?searchtype=author&query=Huang%2C+J+H">J. H. Huang</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraro%2C+F">F. Ferraro</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Reina%2C+G">G. Reina</a>, <a href="/search/hep-ex?searchtype=author&query=Deng%2C+Z+Y">Z. Y. Deng</a>, <a href="/search/hep-ex?searchtype=author&query=Suerra%2C+E">E. Suerra</a>, <a href="/search/hep-ex?searchtype=author&query=Altilia%2C+S">S. Altilia</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">D. Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Brigatti%2C+A">A. Brigatti</a>, <a href="/search/hep-ex?searchtype=author&query=Caccianiga%2C+B">B. Caccianiga</a>, <a href="/search/hep-ex?searchtype=author&query=Giammarchi%2C+M+G">M. G. Giammarchi</a>, <a href="/search/hep-ex?searchtype=author&query=Landini%2C+C">C. Landini</a>, <a href="/search/hep-ex?searchtype=author&query=Lombardi%2C+P">P. Lombardi</a>, <a href="/search/hep-ex?searchtype=author&query=Miramonti%2C+L">L. Miramonti</a>, <a href="/search/hep-ex?searchtype=author&query=Percalli%2C+E">E. Percalli</a>, <a href="/search/hep-ex?searchtype=author&query=Ranucci%2C+G">G. Ranucci</a>, <a href="/search/hep-ex?searchtype=author&query=Re%2C+A+C">A. C. Re</a>, <a href="/search/hep-ex?searchtype=author&query=Saggese%2C+P">P. Saggese</a>, <a href="/search/hep-ex?searchtype=author&query=Torri%2C+M+D+C">M. D. C. Torri</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a> , et al. (51 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.19879v1-abstract-short" style="display: inline;"> In the field of rare event physics, it is common to have huge masses of organic liquid scintillator as detection medium. In particular, they are widely used to study neutrino properties or astrophysical neutrinos. Thanks to its safety properties (such as low toxicity and high flash point) and easy scalability, linear alkyl benzene is the most common solvent used to produce liquid scintillators for… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19879v1-abstract-full').style.display = 'inline'; document.getElementById('2405.19879v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.19879v1-abstract-full" style="display: none;"> In the field of rare event physics, it is common to have huge masses of organic liquid scintillator as detection medium. In particular, they are widely used to study neutrino properties or astrophysical neutrinos. Thanks to its safety properties (such as low toxicity and high flash point) and easy scalability, linear alkyl benzene is the most common solvent used to produce liquid scintillators for large mass experiments. The knowledge of the refractive index is a pivotal point to understand the detector response, as this quantity (and its wavelength dependence) affects the Cherenkov radiation and photon propagation in the medium. In this paper, we report the measurement of the refractive index of the JUNO liquid scintillator between 260-1064 nm performed with two different methods (an ellipsometer and a refractometer), with a sub percent level precision. In addition, we used an interferometer to measure the group velocity in the JUNO liquid scintillator and verify the expected value derived from the refractive index measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19879v1-abstract-full').style.display = 'none'; document.getElementById('2405.19879v1-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, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 9 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/2405.18008">arXiv:2405.18008</a> <span> [<a href="https://arxiv.org/pdf/2405.18008">pdf</a>, <a href="https://arxiv.org/format/2405.18008">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/ad7f3e">10.1088/1674-1137/ad7f3e <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Potential to identify neutrino mass ordering with reactor antineutrinos at JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">Marco Beretta</a> , et al. (605 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.18008v2-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment under construction in South China. This paper presents an updated estimate of JUNO's sensitivity to neutrino mass ordering using the reactor antineutrinos emitted from eight nuclear reactor cores in the Taishan and Yangjiang nuclear power plants. This measurement is planned by studying the fine interference… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18008v2-abstract-full').style.display = 'inline'; document.getElementById('2405.18008v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.18008v2-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a multi-purpose neutrino experiment under construction in South China. This paper presents an updated estimate of JUNO's sensitivity to neutrino mass ordering using the reactor antineutrinos emitted from eight nuclear reactor cores in the Taishan and Yangjiang nuclear power plants. This measurement is planned by studying the fine interference pattern caused by quasi-vacuum oscillations in the oscillated antineutrino spectrum at a baseline of 52.5~km and is completely independent of the CP violating phase and neutrino mixing angle $胃_{23}$. The sensitivity is obtained through a joint analysis of JUNO and Taishan Antineutrino Observatory (TAO) detectors utilizing the best available knowledge to date about the location and overburden of the JUNO experimental site, local and global nuclear reactors, JUNO and TAO detector responses, expected event rates and spectra of signals and backgrounds, and systematic uncertainties of analysis inputs. We find that a 3$蟽$ median sensitivity to reject the wrong mass ordering hypothesis can be reached with an exposure to approximately 6.5 years $\times$ 26.6 GW thermal power. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.18008v2-abstract-full').style.display = 'none'; document.getElementById('2405.18008v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">The version published on Chinese Physics C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.17860">arXiv:2405.17860</a> <span> [<a href="https://arxiv.org/pdf/2405.17860">pdf</a>, <a href="https://arxiv.org/format/2405.17860">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/10.1088/1674-1137/ad83aa">10.1088/1674-1137/ad83aa <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Prediction of Energy Resolution in the JUNO Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Adamowicz%2C+K">Kai Adamowicz</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">Marco Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bick%2C+D">Daniel Bick</a> , et al. (629 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.17860v2-abstract-short" style="display: inline;"> This paper presents an energy resolution study of the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3\% at 1~MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17860v2-abstract-full').style.display = 'inline'; document.getElementById('2405.17860v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.17860v2-abstract-full" style="display: none;"> This paper presents an energy resolution study of the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3\% at 1~MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of the liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The results of study reveal an energy resolution of 2.95\% at 1~MeV. Furthermore, this study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data collection. Moreover, it provides a guideline for comprehending the energy resolution characteristics of liquid scintillator-based detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17860v2-abstract-full').style.display = 'none'; document.getElementById('2405.17860v2-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chinese Phys. C 49 013003 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.17792">arXiv:2405.17792</a> <span> [<a href="https://arxiv.org/pdf/2405.17792">pdf</a>, <a href="https://arxiv.org/format/2405.17792">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> JUNO Sensitivity to Invisible Decay Modes of Neutrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Adamowicz%2C+K">Kai Adamowicz</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">Marco Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bick%2C+D">Daniel Bick</a> , et al. (635 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.17792v2-abstract-short" style="display: inline;"> We explore the decay of bound neutrons into invisible particles (e.g., $n\rightarrow 3 谓$ or $nn \rightarrow 2 谓$) in the JUNO liquid scintillator detector, which do not produce an observable signal. The invisible decay includes two decay modes: $ n \rightarrow { inv} $ and $ nn \rightarrow { inv} $. The invisible decays of $s$-shell neutrons in $^{12}{\rm C}$ will leave a highly excited residual… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17792v2-abstract-full').style.display = 'inline'; document.getElementById('2405.17792v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.17792v2-abstract-full" style="display: none;"> We explore the decay of bound neutrons into invisible particles (e.g., $n\rightarrow 3 谓$ or $nn \rightarrow 2 谓$) in the JUNO liquid scintillator detector, which do not produce an observable signal. The invisible decay includes two decay modes: $ n \rightarrow { inv} $ and $ nn \rightarrow { inv} $. The invisible decays of $s$-shell neutrons in $^{12}{\rm C}$ will leave a highly excited residual nucleus. Subsequently, some de-excitation modes of the excited residual nuclei can produce a time- and space-correlated triple coincidence signal in the JUNO detector. Based on a full Monte Carlo simulation informed with the latest available data, we estimate all backgrounds, including inverse beta decay events of the reactor antineutrino $\bar谓_e$, natural radioactivity, cosmogenic isotopes and neutral current interactions of atmospheric neutrinos. Pulse shape discrimination and multivariate analysis techniques are employed to further suppress backgrounds. With two years of exposure, JUNO is expected to give an order of magnitude improvement compared to the current best limits. After 10 years of data taking, the JUNO expected sensitivities at a 90% confidence level are $蟿/B( n \rightarrow { inv} ) > 5.0 \times 10^{31} \, {\rm yr}$ and $蟿/B( nn \rightarrow { inv} ) > 1.4 \times 10^{32} \, {\rm yr}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17792v2-abstract-full').style.display = 'none'; document.getElementById('2405.17792v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages, 10 figures, 4 tables, Published version in EPJC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.07109">arXiv:2309.07109</a> <span> [<a href="https://arxiv.org/pdf/2309.07109">pdf</a>, <a href="https://arxiv.org/ps/2309.07109">ps</a>, <a href="https://arxiv.org/format/2309.07109">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Real-time Monitoring for the Next Core-Collapse Supernova in JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Beretta%2C+M">Marco Beretta</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a> , et al. (606 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="2309.07109v2-abstract-short" style="display: inline;"> The core-collapse supernova (CCSN) is considered one of the most energetic astrophysical events in the universe. The early and prompt detection of neutrinos before (pre-SN) and during the supernova (SN) burst presents a unique opportunity for multi-messenger observations of CCSN events. In this study, we describe the monitoring concept and present the sensitivity of the system to pre-SN and SN neu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.07109v2-abstract-full').style.display = 'inline'; document.getElementById('2309.07109v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.07109v2-abstract-full" style="display: none;"> The core-collapse supernova (CCSN) is considered one of the most energetic astrophysical events in the universe. The early and prompt detection of neutrinos before (pre-SN) and during the supernova (SN) burst presents a unique opportunity for multi-messenger observations of CCSN events. In this study, we describe the monitoring concept and present the sensitivity of the system to pre-SN and SN neutrinos at the Jiangmen Underground Neutrino Observatory (JUNO), a 20 kton liquid scintillator detector currently under construction in South China. The real-time monitoring system is designed to ensure both prompt alert speed and comprehensive coverage of progenitor stars. It incorporates prompt monitors on the electronic board as well as online monitors at the data acquisition stage. Assuming a false alert rate of 1 per year, this monitoring system exhibits sensitivity to pre-SN neutrinos up to a distance of approximately 1.6 (0.9) kiloparsecs and SN neutrinos up to about 370 (360) kiloparsecs for a progenitor mass of 30 solar masses, considering both normal and inverted mass ordering scenarios. The pointing ability of the CCSN is evaluated by analyzing the accumulated event anisotropy of inverse beta decay interactions from pre-SN or SN neutrinos. This, along with the early alert, can play a crucial role in facilitating follow-up multi-messenger observations of the next galactic or nearby extragalactic CCSN. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.07109v2-abstract-full').style.display = 'none'; document.getElementById('2309.07109v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 9 figures, accepted for the publication at 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/2306.09567">arXiv:2306.09567</a> <span> [<a href="https://arxiv.org/pdf/2306.09567">pdf</a>, <a href="https://arxiv.org/format/2306.09567">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2023/09/001">10.1088/1475-7516/2023/09/001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> JUNO sensitivity to the annihilation of MeV dark matter in the galactic halo </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a> , et al. (581 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="2306.09567v3-abstract-short" style="display: inline;"> We discuss JUNO sensitivity to the annihilation of MeV dark matter in the galactic halo via detecting inverse beta decay reactions of electron anti-neutrinos resulting from the annihilation. We study possible backgrounds to the signature, including the reactor neutrinos, diffuse supernova neutrino background, charged- and neutral-current interactions of atmospheric neutrinos, backgrounds from muon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.09567v3-abstract-full').style.display = 'inline'; document.getElementById('2306.09567v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.09567v3-abstract-full" style="display: none;"> We discuss JUNO sensitivity to the annihilation of MeV dark matter in the galactic halo via detecting inverse beta decay reactions of electron anti-neutrinos resulting from the annihilation. We study possible backgrounds to the signature, including the reactor neutrinos, diffuse supernova neutrino background, charged- and neutral-current interactions of atmospheric neutrinos, backgrounds from muon-induced fast neutrons and cosmogenic isotopes. A fiducial volume cut, as well as the pulse shape discrimination and the muon veto are applied to suppress the above backgrounds. It is shown that JUNO sensitivity to the thermally averaged dark matter annihilation rate in 10 years of exposure would be significantly better than the present-day best limit set by Super-Kamiokande and would be comparable to that expected by Hyper-Kamiokande. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.09567v3-abstract-full').style.display = 'none'; document.getElementById('2306.09567v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">25 pages, 9 figures, matches the publised version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JCAP 09 (2023) 001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.05172">arXiv:2303.05172</a> <span> [<a href="https://arxiv.org/pdf/2303.05172">pdf</a>, <a href="https://arxiv.org/format/2303.05172">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.nima.2023.168680">10.1016/j.nima.2023.168680 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </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/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?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/2302.02717">arXiv:2302.02717</a> <span> [<a href="https://arxiv.org/pdf/2302.02717">pdf</a>, <a href="https://arxiv.org/format/2302.02717">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP04(2023)090">10.1007/JHEP04(2023)090 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing invisible neutrino decay with KM3NeT-ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Aly%2C+Z">Z. Aly</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anguita%2C+M">M. Anguita</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Bailly-Salins%2C+L">L. Bailly-Salins</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Becherini%2C+Y">Y. Becherini</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Boettcher%2C+M">M. Boettcher</a>, <a href="/search/hep-ex?searchtype=author&query=Cabo%2C+M+B">M. Bou Cabo</a> , et al. (230 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2302.02717v3-abstract-short" style="display: inline;"> In the era of precision measurements of the neutrino oscillation parameters, upcoming neutrino experiments will also be sensitive to physics beyond the Standard Model. KM3NeT/ORCA is a neutrino detector optimised for measuring atmospheric neutrinos from a few GeV to around 100 GeV. In this paper, the sensitivity of the KM3NeT/ORCA detector to neutrino decay has been explored. A three-flavour neutr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02717v3-abstract-full').style.display = 'inline'; document.getElementById('2302.02717v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.02717v3-abstract-full" style="display: none;"> In the era of precision measurements of the neutrino oscillation parameters, upcoming neutrino experiments will also be sensitive to physics beyond the Standard Model. KM3NeT/ORCA is a neutrino detector optimised for measuring atmospheric neutrinos from a few GeV to around 100 GeV. In this paper, the sensitivity of the KM3NeT/ORCA detector to neutrino decay has been explored. A three-flavour neutrino oscillation scenario, where the third neutrino mass state $谓_3$ decays into an invisible state, e.g. a sterile neutrino, is considered. We find that KM3NeT/ORCA would be sensitive to invisible neutrino decays with $1/伪_3=蟿_3/m_3 < 180$~$\mathrm{ps/eV}$ at $90\%$ confidence level, assuming true normal ordering. Finally, the impact of neutrino decay on the precision of KM3NeT/ORCA measurements for $胃_{23}$, $螖m^2_{31}$ and mass ordering have been studied. No significant effect of neutrino decay on the sensitivity to these measurements has been found. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02717v3-abstract-full').style.display = 'none'; document.getElementById('2302.02717v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">27 pages, 14 figures, bibliography updated, typos corrected</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.08502">arXiv:2212.08502</a> <span> [<a href="https://arxiv.org/pdf/2212.08502">pdf</a>, <a href="https://arxiv.org/format/2212.08502">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/ace9c6">10.1088/1674-1137/ace9c6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> JUNO Sensitivity on Proton Decay $p\to \bar谓K^+$ Searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Birkenfeld%2C+T">Thilo Birkenfeld</a>, <a href="/search/hep-ex?searchtype=author&query=Blin%2C+S">Sylvie Blin</a> , et al. (586 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.08502v3-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar谓K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreov… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.08502v3-abstract-full').style.display = 'inline'; document.getElementById('2212.08502v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.08502v3-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar谓K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar谓K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.08502v3-abstract-full').style.display = 'none'; document.getElementById('2212.08502v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 12 figures, an author added</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.08454">arXiv:2212.08454</a> <span> [<a href="https://arxiv.org/pdf/2212.08454">pdf</a>, <a href="https://arxiv.org/format/2212.08454">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2023.168322">10.1016/j.nima.2023.168322 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Validation and integration tests of the JUNO 20-inch PMTs readout electronics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Cerrone%2C+V">Vanessa Cerrone</a>, <a href="/search/hep-ex?searchtype=author&query=von+Sturm%2C+K">Katharina von Sturm</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bolognesi%2C+M">Matteo Bolognesi</a>, <a href="/search/hep-ex?searchtype=author&query=Brugnera%2C+R">Riccardo Brugnera</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+C">Chao Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Clerbaux%2C+B">Barbara Clerbaux</a>, <a href="/search/hep-ex?searchtype=author&query=Coppi%2C+A">Alberto Coppi</a>, <a href="/search/hep-ex?searchtype=author&query=Corso%2C+F+d">Flavio dal Corso</a>, <a href="/search/hep-ex?searchtype=author&query=Corti%2C+D">Daniele Corti</a>, <a href="/search/hep-ex?searchtype=author&query=Dong%2C+J">Jianmeng Dong</a>, <a href="/search/hep-ex?searchtype=author&query=Dou%2C+W">Wei Dou</a>, <a href="/search/hep-ex?searchtype=author&query=Fan%2C+L">Lei Fan</a>, <a href="/search/hep-ex?searchtype=author&query=Garfagnini%2C+A">Alberto Garfagnini</a>, <a href="/search/hep-ex?searchtype=author&query=Gong%2C+G">Guanghua Gong</a>, <a href="/search/hep-ex?searchtype=author&query=Grassi%2C+M">Marco Grassi</a>, <a href="/search/hep-ex?searchtype=author&query=Hang%2C+S">Shuang Hang</a>, <a href="/search/hep-ex?searchtype=author&query=Guizzetti%2C+R+M">Rosa Maria Guizzetti</a>, <a href="/search/hep-ex?searchtype=author&query=He%2C+C">Cong He</a>, <a href="/search/hep-ex?searchtype=author&query=Hu%2C+J">Jun Hu</a>, <a href="/search/hep-ex?searchtype=author&query=Isocrate%2C+R">Roberto Isocrate</a>, <a href="/search/hep-ex?searchtype=author&query=Jelmini%2C+B">Beatrice Jelmini</a>, <a href="/search/hep-ex?searchtype=author&query=Ji%2C+X">Xiaolu Ji</a>, <a href="/search/hep-ex?searchtype=author&query=Jiang%2C+X">Xiaoshan Jiang</a> , et al. (105 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.08454v1-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a large neutrino detector currently under construction in China. JUNO will be able to study the neutrino mass ordering and to perform leading measurements detecting terrestrial and astrophysical neutrinos in a wide energy range, spanning from 200 keV to several GeV. Given the ambitious physics goals of JUNO, the electronic system has to meet… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.08454v1-abstract-full').style.display = 'inline'; document.getElementById('2212.08454v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.08454v1-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a large neutrino detector currently under construction in China. JUNO will be able to study the neutrino mass ordering and to perform leading measurements detecting terrestrial and astrophysical neutrinos in a wide energy range, spanning from 200 keV to several GeV. Given the ambitious physics goals of JUNO, the electronic system has to meet specific tight requirements, and a thorough characterization is required. The present paper describes the tests performed on the readout modules to measure their performances. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.08454v1-abstract-full').style.display = 'none'; document.getElementById('2212.08454v1-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 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 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/2210.08437">arXiv:2210.08437</a> <span> [<a href="https://arxiv.org/pdf/2210.08437">pdf</a>, <a href="https://arxiv.org/format/2210.08437">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="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-4357/ad2bfd">10.3847/1538-4357/ad2bfd <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Model Independent Approach of the JUNO $^8$B Solar Neutrino Program </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Zhao%2C+J">Jie Zhao</a>, <a href="/search/hep-ex?searchtype=author&query=Yue%2C+B">Baobiao Yue</a>, <a href="/search/hep-ex?searchtype=author&query=Lu%2C+H">Haoqi Lu</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+Y">Yufeng Li</a>, <a href="/search/hep-ex?searchtype=author&query=Ling%2C+J">Jiajie Ling</a>, <a href="/search/hep-ex?searchtype=author&query=Yu%2C+Z">Zeyuan Yu</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a> , et al. (579 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.08437v2-abstract-short" style="display: inline;"> The physics potential of detecting $^8$B solar neutrinos will be exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model independent manner by using three distinct channels of the charged-current (CC), neutral-current (NC) and elastic scattering (ES) interactions. Due to the largest-ever mass of $^{13}$C nuclei in the liquid-scintillator detectors and the {expected} low backg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.08437v2-abstract-full').style.display = 'inline'; document.getElementById('2210.08437v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.08437v2-abstract-full" style="display: none;"> The physics potential of detecting $^8$B solar neutrinos will be exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model independent manner by using three distinct channels of the charged-current (CC), neutral-current (NC) and elastic scattering (ES) interactions. Due to the largest-ever mass of $^{13}$C nuclei in the liquid-scintillator detectors and the {expected} low background level, $^8$B solar neutrinos would be observable in the CC and NC interactions on $^{13}$C for the first time. By virtue of optimized event selections and muon veto strategies, backgrounds from the accidental coincidence, muon-induced isotopes, and external backgrounds can be greatly suppressed. Excellent signal-to-background ratios can be achieved in the CC, NC and ES channels to guarantee the $^8$B solar neutrino observation. From the sensitivity studies performed in this work, we show that JUNO, with ten years of data, can reach the {1$蟽$} precision levels of 5%, 8% and 20% for the $^8$B neutrino flux, $\sin^2胃_{12}$, and $螖m^2_{21}$, respectively. It would be unique and helpful to probe the details of both solar physics and neutrino physics. In addition, when combined with SNO, the world-best precision of 3% is expected for the $^8$B neutrino flux measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.08437v2-abstract-full').style.display = 'none'; document.getElementById('2210.08437v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 7 figures, accepted version to appear in The Astrophysical Journal. Yufeng Li and Jiajie Ling are corresponding authors</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astrophysical Journal 965 (2024) 122 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.08830">arXiv:2205.08830</a> <span> [<a href="https://arxiv.org/pdf/2205.08830">pdf</a>, <a href="https://arxiv.org/format/2205.08830">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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 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/10.1088/1475-7516/2022/10/033">10.1088/1475-7516/2022/10/033 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Prospects for Detecting the Diffuse Supernova Neutrino Background with JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Birkenfeld%2C+T">Thilo Birkenfeld</a>, <a href="/search/hep-ex?searchtype=author&query=Blin%2C+S">Sylvie Blin</a> , et al. (577 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.08830v2-abstract-short" style="display: inline;"> We present the detection potential for the diffuse supernova neutrino background (DSNB) at the Jiangmen Underground Neutrino Observatory (JUNO), using the inverse-beta-decay (IBD) detection channel on free protons. We employ the latest information on the DSNB flux predictions, and investigate in detail the background and its reduction for the DSNB search at JUNO. The atmospheric neutrino induced n… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.08830v2-abstract-full').style.display = 'inline'; document.getElementById('2205.08830v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.08830v2-abstract-full" style="display: none;"> We present the detection potential for the diffuse supernova neutrino background (DSNB) at the Jiangmen Underground Neutrino Observatory (JUNO), using the inverse-beta-decay (IBD) detection channel on free protons. We employ the latest information on the DSNB flux predictions, and investigate in detail the background and its reduction for the DSNB search at JUNO. The atmospheric neutrino induced neutral current (NC) background turns out to be the most critical background, whose uncertainty is carefully evaluated from both the spread of model predictions and an envisaged \textit{in situ} measurement. We also make a careful study on the background suppression with the pulse shape discrimination (PSD) and triple coincidence (TC) cuts. With latest DSNB signal predictions, more realistic background evaluation and PSD efficiency optimization, and additional TC cut, JUNO can reach the significance of 3$蟽$ for 3 years of data taking, and achieve better than 5$蟽$ after 10 years for a reference DSNB model. In the pessimistic scenario of non-observation, JUNO would strongly improve the limits and exclude a significant region of the model parameter space. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.08830v2-abstract-full').style.display = 'none'; document.getElementById('2205.08830v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 pages, 11 figures, final published version in JCAP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JCAP 10 (2022) 033 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.08629">arXiv:2205.08629</a> <span> [<a href="https://arxiv.org/pdf/2205.08629">pdf</a>, <a href="https://arxiv.org/format/2205.08629">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-022-11002-8">10.1140/epjc/s10052-022-11002-8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Mass Testing and Characterization of 20-inch PMTs for JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?searchtype=author&query=de+Andre%2C+J+P+A+M">Joao Pedro Athayde Marcondes de Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a> , et al. (541 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.08629v2-abstract-short" style="display: inline;"> Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3 % at 1 MeV, for which its instruments need to meet a certain quality and thus have to be fully characterized. More than 20,000 20-inch PMTs have been received and assessed by JUNO after a detailed testing program whic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.08629v2-abstract-full').style.display = 'inline'; document.getElementById('2205.08629v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.08629v2-abstract-full" style="display: none;"> Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3 % at 1 MeV, for which its instruments need to meet a certain quality and thus have to be fully characterized. More than 20,000 20-inch PMTs have been received and assessed by JUNO after a detailed testing program which began in 2017 and elapsed for about four years. Based on this mass characterization and a set of specific requirements, a good quality of all accepted PMTs could be ascertained. This paper presents the performed testing procedure with the designed testing systems as well as the statistical characteristics of all 20-inch PMTs intended to be used in the JUNO experiment, covering more than fifteen performance parameters including the photocathode uniformity. This constitutes the largest sample of 20-inch PMTs ever produced and studied in detail to date, i.e. 15,000 of the newly developed 20-inch MCP-PMTs from Northern Night Vision Technology Co. (NNVT) and 5,000 of dynode PMTs from Hamamatsu Photonics K. K.(HPK). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.08629v2-abstract-full').style.display = 'none'; document.getElementById('2205.08629v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2204.13249">arXiv:2204.13249</a> <span> [<a href="https://arxiv.org/pdf/2204.13249">pdf</a>, <a href="https://arxiv.org/format/2204.13249">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/ac8bc9">10.1088/1674-1137/ac8bc9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Sub-percent Precision Measurement of Neutrino Oscillation Parameters with JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/hep-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a> , et al. (581 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="2204.13249v1-abstract-short" style="display: inline;"> JUNO is a multi-purpose neutrino observatory under construction in the south of China. This publication presents new sensitivity estimates for the measurement of the $螖m^2_{31}$, $螖m^2_{21}$, $\sin^2 胃_{12}$, and $\sin^2 胃_{13}$ oscillation parameters using reactor antineutrinos, which is one of the primary physics goals of the experiment. The sensitivities are obtained using the best knowledge av… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.13249v1-abstract-full').style.display = 'inline'; document.getElementById('2204.13249v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2204.13249v1-abstract-full" style="display: none;"> JUNO is a multi-purpose neutrino observatory under construction in the south of China. This publication presents new sensitivity estimates for the measurement of the $螖m^2_{31}$, $螖m^2_{21}$, $\sin^2 胃_{12}$, and $\sin^2 胃_{13}$ oscillation parameters using reactor antineutrinos, which is one of the primary physics goals of the experiment. The sensitivities are obtained using the best knowledge available to date on the location and overburden of the experimental site, the nuclear reactors in the surrounding area and beyond, the detector response uncertainties, and the reactor antineutrino spectral shape constraints expected from the TAO satellite detector. It is found that the $螖m^2_{31}$, $螖m^2_{21}$, and $\sin^2 胃_{12}$ oscillation parameters will be determined to better than 0.5% precision in six years of data collection, which represents approximately an order of magnitude improvement over existing constraints. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.13249v1-abstract-full').style.display = 'none'; document.getElementById('2204.13249v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">29 pages, 10 figures, submitted to Chinese Physics C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.14450">arXiv:2112.14450</a> <span> [<a href="https://arxiv.org/pdf/2112.14450">pdf</a>, <a href="https://arxiv.org/format/2112.14450">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2022)062">10.1007/JHEP06(2022)062 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Damping signatures at JUNO, a medium-baseline reactor neutrino oscillation experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+collaboration"> JUNO collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+J">Jun Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Liao%2C+J">Jiajun Liao</a>, <a href="/search/hep-ex?searchtype=author&query=Wang%2C+W">Wei Wang</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Balashov%2C+N">Nikita Balashov</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Basilico%2C+D">Davide Basilico</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a> , et al. (582 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2112.14450v2-abstract-short" style="display: inline;"> We study damping signatures at the Jiangmen Underground Neutrino Observatory (JUNO), a medium-baseline reactor neutrino oscillation experiment. These damping signatures are motivated by various new physics models, including quantum decoherence, $谓_3$ decay, neutrino absorption, and wave packet decoherence. The phenomenological effects of these models can be characterized by exponential damping fac… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.14450v2-abstract-full').style.display = 'inline'; document.getElementById('2112.14450v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.14450v2-abstract-full" style="display: none;"> We study damping signatures at the Jiangmen Underground Neutrino Observatory (JUNO), a medium-baseline reactor neutrino oscillation experiment. These damping signatures are motivated by various new physics models, including quantum decoherence, $谓_3$ decay, neutrino absorption, and wave packet decoherence. The phenomenological effects of these models can be characterized by exponential damping factors at the probability level. We assess how well JUNO can constrain these damping parameters and how to disentangle these different damping signatures at JUNO. Compared to current experimental limits, JUNO can significantly improve the limits on $蟿_3/m_3$ in the $谓_3$ decay model, the width of the neutrino wave packet $蟽_x$, and the intrinsic relative dispersion of neutrino momentum $蟽_{\rm rel}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.14450v2-abstract-full').style.display = 'none'; document.getElementById('2112.14450v2-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 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 2 figures, 4 tables. Version published in JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP06(2022)062 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.06293">arXiv:2108.06293</a> <span> [<a href="https://arxiv.org/pdf/2108.06293">pdf</a>, <a href="https://arxiv.org/format/2108.06293">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP03(2022)055">10.1007/JHEP03(2022)055 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Combined sensitivity of JUNO and KM3NeT/ORCA to the neutrino mass ordering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Aly%2C+Z">Z. Aly</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anguita%2C+M">M. Anguita</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Boettcher%2C+M">M. Boettcher</a> , et al. (253 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="2108.06293v1-abstract-short" style="display: inline;"> This article presents the potential of a combined analysis of the JUNO and KM3NeT/ORCA experiments to determine the neutrino mass ordering. This combination is particularly interesting as it significantly boosts the potential of either detector, beyond simply adding their neutrino mass ordering sensitivities, by removing a degeneracy in the determination of $螖m_{31}^2$ between the two experiments… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.06293v1-abstract-full').style.display = 'inline'; document.getElementById('2108.06293v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.06293v1-abstract-full" style="display: none;"> This article presents the potential of a combined analysis of the JUNO and KM3NeT/ORCA experiments to determine the neutrino mass ordering. This combination is particularly interesting as it significantly boosts the potential of either detector, beyond simply adding their neutrino mass ordering sensitivities, by removing a degeneracy in the determination of $螖m_{31}^2$ between the two experiments when assuming the wrong ordering. The study is based on the latest projected performances for JUNO, and on simulation tools using a full Monte Carlo approach to the KM3NeT/ORCA response with a careful assessment of its energy systematics. From this analysis, a $5蟽$ determination of the neutrino mass ordering is expected after 6 years of joint data taking for any value of the oscillation parameters. This sensitivity would be achieved after only 2 years of joint data taking assuming the current global best-fit values for those parameters for normal ordering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.06293v1-abstract-full').style.display = 'none'; document.getElementById('2108.06293v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 03 (2022) 055 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.00344">arXiv:2107.00344</a> <span> [<a href="https://arxiv.org/pdf/2107.00344">pdf</a>, <a href="https://arxiv.org/format/2107.00344">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Sensitivity to light sterile neutrino mixing parameters with KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Alshamsi%2C+M">M. Alshamsi</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Aly%2C+Z">Z. Aly</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anguita%2C+M">M. Anguita</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Bissinger%2C+M">M. Bissinger</a> , et al. (223 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.00344v2-abstract-short" style="display: inline;"> KM3NeT/ORCA is a next-generation neutrino telescope optimised for atmospheric neutrino oscillations studies. In this paper, the sensitivity of ORCA to the presence of a light sterile neutrino in a 3+1 model is presented. After three years of data taking, ORCA will be able to probe the active-sterile mixing angles $胃_{14}$, $胃_{24}$, $胃_{34}$ and the effective angle $胃_{渭e}$, over a broad range of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.00344v2-abstract-full').style.display = 'inline'; document.getElementById('2107.00344v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.00344v2-abstract-full" style="display: none;"> KM3NeT/ORCA is a next-generation neutrino telescope optimised for atmospheric neutrino oscillations studies. In this paper, the sensitivity of ORCA to the presence of a light sterile neutrino in a 3+1 model is presented. After three years of data taking, ORCA will be able to probe the active-sterile mixing angles $胃_{14}$, $胃_{24}$, $胃_{34}$ and the effective angle $胃_{渭e}$, over a broad range of mass squared difference $螖m^2_{41} \sim [10^{-5}, 10]$ $\rm{eV}^2$, allowing to test the eV-mass sterile neutrino hypothesis as the origin of short baseline anomalies, as well as probing the hypothesis of a very light sterile neutrino, not yet constrained by cosmology. ORCA will be able to explore a relevant fraction of the parameter space not yet reached by present measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.00344v2-abstract-full').style.display = 'none'; document.getElementById('2107.00344v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2104.02565">arXiv:2104.02565</a> <span> [<a href="https://arxiv.org/pdf/2104.02565">pdf</a>, <a href="https://arxiv.org/format/2104.02565">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.ppnp.2021.103927">10.1016/j.ppnp.2021.103927 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> JUNO Physics and Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Birkenfeld%2C+T">Thilo Birkenfeld</a> , et al. (591 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2104.02565v2-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton LS detector at 700-m underground. An excellent energy resolution and a large fiducial volume offer exciting opportunities for addressing many important topics in neutrino and astro-particle physics. With 6 years of data, the neutrino mass ordering can be determined at 3-4 sigma and three oscillation parameters can be measured to a p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.02565v2-abstract-full').style.display = 'inline'; document.getElementById('2104.02565v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2104.02565v2-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton LS detector at 700-m underground. An excellent energy resolution and a large fiducial volume offer exciting opportunities for addressing many important topics in neutrino and astro-particle physics. With 6 years of data, the neutrino mass ordering can be determined at 3-4 sigma and three oscillation parameters can be measured to a precision of 0.6% or better by detecting reactor antineutrinos. With 10 years of data, DSNB could be observed at 3-sigma; a lower limit of the proton lifetime of 8.34e33 years (90% C.L.) can be set by searching for p->nu_bar K^+; detection of solar neutrinos would shed new light on the solar metallicity problem and examine the vacuum-matter transition region. A core-collapse supernova at 10 kpc would lead to ~5000 IBD and ~2000 (300) all-flavor neutrino-proton (electron) scattering events. Geo-neutrinos can be detected with a rate of ~400 events/year. We also summarize the final design of the JUNO detector and the key R&D achievements. All 20-inch PMTs have been tested. The average photon detection efficiency is 28.9% for the 15,000 MCP PMTs and 28.1% for the 5,000 dynode PMTs, higher than the JUNO requirement of 27%. Together with the >20 m attenuation length of LS, we expect a yield of 1345 p.e. per MeV and an effective energy resolution of 3.02%/\sqrt{E (MeV)}$ in simulations. The underwater electronics is designed to have a loss rate <0.5% in 6 years. With degassing membranes and a micro-bubble system, the radon concentration in the 35-kton water pool could be lowered to <10 mBq/m^3. Acrylic panels of radiopurity <0.5 ppt U/Th are produced. The 20-kton LS will be purified onsite. Singles in the fiducial volume can be controlled to ~10 Hz. The JUNO experiment also features a double calorimeter system with 25,600 3-inch PMTs, a LS testing facility OSIRIS, and a near detector TAO. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2104.02565v2-abstract-full').style.display = 'none'; document.getElementById('2104.02565v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">A review paper with 78 pages and 32 figures. v2: minor revision. Final version to appear in Progress in Particle and Nuclear Physics</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09908">arXiv:2103.09908</a> <span> [<a href="https://arxiv.org/pdf/2103.09908">pdf</a>, <a href="https://arxiv.org/format/2103.09908">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-021-09565-z">10.1140/epjc/s10052-021-09565-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> JUNO sensitivity to low energy atmospheric neutrino spectra </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Birkenfeld%2C+T">Thilo Birkenfeld</a> , et al. (588 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="2103.09908v3-abstract-short" style="display: inline;"> Atmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09908v3-abstract-full').style.display = 'inline'; document.getElementById('2103.09908v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09908v3-abstract-full" style="display: none;"> Atmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos per day given the large volume. A study on the JUNO detection and reconstruction capabilities of atmospheric $谓_e$ and $谓_渭$ fluxes is presented in this paper. In this study, a sample of atmospheric neutrino Monte Carlo events has been generated, starting from theoretical models, and then processed by the detector simulation. The excellent timing resolution of the 3'' PMT light detection system of JUNO detector and the much higher light yield for scintillation over Cherenkov allow to measure the time structure of the scintillation light with very high precision. Since $谓_e$ and $谓_渭$ interactions produce a slightly different light pattern, the different time evolution of light allows to discriminate the flavor of primary neutrinos. A probabilistic unfolding method has been used, in order to infer the primary neutrino energy spectrum from the detector experimental observables. The simulated spectrum has been reconstructed between 100 MeV and 10 GeV, showing a great potential of the detector in the atmospheric low energy region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09908v3-abstract-full').style.display = 'none'; document.getElementById('2103.09908v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C, 81 10 (2021) 887 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09885">arXiv:2103.09885</a> <span> [<a href="https://arxiv.org/pdf/2103.09885">pdf</a>, <a href="https://arxiv.org/format/2103.09885">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-021-09893-0">10.1140/epjc/s10052-021-09893-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determining the Neutrino Mass Ordering and Oscillation Parameters with KM3NeT/ORCA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">S. Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Aly%2C+Z">Z. Aly</a>, <a href="/search/hep-ex?searchtype=author&query=Ambrosone%2C+A">A. Ambrosone</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anguita%2C+M">M. Anguita</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+S">S. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Benfenati%2C+F">F. Benfenati</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Bissinger%2C+M">M. Bissinger</a>, <a href="/search/hep-ex?searchtype=author&query=Boettcher%2C+M">M. Boettcher</a> , et al. (217 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09885v2-abstract-short" style="display: inline;"> The next generation of water Cherenkov neutrino telescopes in the Mediterranean Sea are under construction offshore France (KM3NeT/ORCA) and Sicily (KM3NeT/ARCA). The KM3NeT/ORCA detector features an energy detection threshold which allows to collect atmospheric neutrinos to study flavour oscillation. This paper reports the KM3NeT/ORCA sensitivity to this phenomenon. The event reconstruction, sele… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09885v2-abstract-full').style.display = 'inline'; document.getElementById('2103.09885v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09885v2-abstract-full" style="display: none;"> The next generation of water Cherenkov neutrino telescopes in the Mediterranean Sea are under construction offshore France (KM3NeT/ORCA) and Sicily (KM3NeT/ARCA). The KM3NeT/ORCA detector features an energy detection threshold which allows to collect atmospheric neutrinos to study flavour oscillation. This paper reports the KM3NeT/ORCA sensitivity to this phenomenon. The event reconstruction, selection and classification are described. The sensitivity to determine the neutrino mass ordering was evaluated and found to be 4.4 $蟽$ if the true ordering is normal and 2.3 $蟽$ if inverted, after three years of data taking. The precision to measure $螖m^2_{32}$ and $胃_{23}$ were also estimated and found to be $85\cdot10^{-6}$ eV$^2$ and $(^{+1.9}_{-3.1})^{\circ}$ for normal neutrino mass ordering and, $75\cdot10^{-6}$ eV$^2$ and $(^{+2.0}_{-7.0})^{\circ}$ for inverted ordering. Finally, a unitarity test of the leptonic mixing matrix by measuring the rate of tau neutrinos is described. Three years of data taking were found to be sufficient to exclude $谓_蟿$ and $\bar谓_蟿$ event rate variations larger than 20% at $3蟽$ level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09885v2-abstract-full').style.display = 'none'; document.getElementById('2103.09885v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication at EPJ-C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 82, 26 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.06405">arXiv:2011.06405</a> <span> [<a href="https://arxiv.org/pdf/2011.06405">pdf</a>, <a href="https://arxiv.org/format/2011.06405">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/10.1007/JHEP03(2021)004">10.1007/JHEP03(2021)004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calibration Strategy of the JUNO Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+collaboration"> JUNO collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Birkenfeld%2C+T">Thilo Birkenfeld</a> , et al. (571 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="2011.06405v3-abstract-short" style="display: inline;"> We present the calibration strategy for the 20 kton liquid scintillator central detector of the Jiangmen Underground Neutrino Observatory (JUNO). By utilizing a comprehensive multiple-source and multiple-positional calibration program, in combination with a novel dual calorimetry technique exploiting two independent photosensors and readout systems, we demonstrate that the JUNO central detector ca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06405v3-abstract-full').style.display = 'inline'; document.getElementById('2011.06405v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.06405v3-abstract-full" style="display: none;"> We present the calibration strategy for the 20 kton liquid scintillator central detector of the Jiangmen Underground Neutrino Observatory (JUNO). By utilizing a comprehensive multiple-source and multiple-positional calibration program, in combination with a novel dual calorimetry technique exploiting two independent photosensors and readout systems, we demonstrate that the JUNO central detector can achieve a better than 1% energy linearity and a 3% effective energy resolution, required by the neutrino mass ordering determination. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.06405v3-abstract-full').style.display = 'none'; document.getElementById('2011.06405v3-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 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 November, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.00314">arXiv:2007.00314</a> <span> [<a href="https://arxiv.org/pdf/2007.00314">pdf</a>, <a href="https://arxiv.org/format/2007.00314">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"> Optimization of the JUNO liquid scintillator composition using a Daya Bay antineutrino detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Bay%2C+D">Daya Bay</a>, <a href="/search/hep-ex?searchtype=author&query=collaborations%2C+J">JUNO collaborations</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">A. Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">T. Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">S. Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">M. Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Ali%2C+N">N. Ali</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F+P">F. P. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G+P">G. P. An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">G. Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">N. Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">V. Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">T. Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">B. Asavapibhop</a>, <a href="/search/hep-ex?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">J. P. A. M. de Andr茅</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">A. Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">W. Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Baldoncini%2C+M">M. Baldoncini</a>, <a href="/search/hep-ex?searchtype=author&query=Band%2C+H+R">H. R. Band</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">A. Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">E. Baussan</a> , et al. (642 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="2007.00314v1-abstract-short" style="display: inline;"> To maximize the light yield of the liquid scintillator (LS) for the Jiangmen Underground Neutrino Observatory (JUNO), a 20 t LS sample was produced in a pilot plant at Daya Bay. The optical properties of the new LS in various compositions were studied by replacing the gadolinium-loaded LS in one antineutrino detector. The concentrations of the fluor, PPO, and the wavelength shifter, bis-MSB, were… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00314v1-abstract-full').style.display = 'inline'; document.getElementById('2007.00314v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.00314v1-abstract-full" style="display: none;"> To maximize the light yield of the liquid scintillator (LS) for the Jiangmen Underground Neutrino Observatory (JUNO), a 20 t LS sample was produced in a pilot plant at Daya Bay. The optical properties of the new LS in various compositions were studied by replacing the gadolinium-loaded LS in one antineutrino detector. The concentrations of the fluor, PPO, and the wavelength shifter, bis-MSB, were increased in 12 steps from 0.5 g/L and <0.01 mg/L to 4 g/L and 13 mg/L, respectively. The numbers of total detected photoelectrons suggest that, with the optically purified solvent, the bis-MSB concentration does not need to be more than 4 mg/L. To bridge the one order of magnitude in the detector size difference between Daya Bay and JUNO, the Daya Bay data were used to tune the parameters of a newly developed optical model. Then, the model and tuned parameters were used in the JUNO simulation. This enabled to determine the optimal composition for the JUNO LS: purified solvent LAB with 2.5 g/L PPO, and 1 to 4 mg/L bis-MSB. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00314v1-abstract-full').style.display = 'none'; document.getElementById('2007.00314v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 8 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/2006.11760">arXiv:2006.11760</a> <span> [<a href="https://arxiv.org/pdf/2006.11760">pdf</a>, <a href="https://arxiv.org/format/2006.11760">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"> Feasibility and physics potential of detecting $^8$B solar neutrinos at JUNO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+collaboration"> JUNO collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Ali%2C+N">Nawab Ali</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Biare%2C+D">David Biare</a> , et al. (572 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="2006.11760v1-abstract-short" style="display: inline;"> The Jiangmen Underground Neutrino Observatory~(JUNO) features a 20~kt multi-purpose underground liquid scintillator sphere as its main detector. Some of JUNO's features make it an excellent experiment for $^8$B solar neutrino measurements, such as its low-energy threshold, its high energy resolution compared to water Cherenkov detectors, and its much large target mass compared to previous liquid s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.11760v1-abstract-full').style.display = 'inline'; document.getElementById('2006.11760v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.11760v1-abstract-full" style="display: none;"> The Jiangmen Underground Neutrino Observatory~(JUNO) features a 20~kt multi-purpose underground liquid scintillator sphere as its main detector. Some of JUNO's features make it an excellent experiment for $^8$B solar neutrino measurements, such as its low-energy threshold, its high energy resolution compared to water Cherenkov detectors, and its much large target mass compared to previous liquid scintillator detectors. In this paper we present a comprehensive assessment of JUNO's potential for detecting $^8$B solar neutrinos via the neutrino-electron elastic scattering process. A reduced 2~MeV threshold on the recoil electron energy is found to be achievable assuming the intrinsic radioactive background $^{238}$U and $^{232}$Th in the liquid scintillator can be controlled to 10$^{-17}$~g/g. With ten years of data taking, about 60,000 signal and 30,000 background events are expected. This large sample will enable an examination of the distortion of the recoil electron spectrum that is dominated by the neutrino flavor transformation in the dense solar matter, which will shed new light on the tension between the measured electron spectra and the predictions of the standard three-flavor neutrino oscillation framework. If $螖m^{2}_{21}=4.8\times10^{-5}~(7.5\times10^{-5})$~eV$^{2}$, JUNO can provide evidence of neutrino oscillation in the Earth at the about 3$蟽$~(2$蟽$) level by measuring the non-zero signal rate variation with respect to the solar zenith angle. Moveover, JUNO can simultaneously measure $螖m^2_{21}$ using $^8$B solar neutrinos to a precision of 20\% or better depending on the central value and to sub-percent precision using reactor antineutrinos. A comparison of these two measurements from the same detector will help elucidate the current tension between the value of $螖m^2_{21}$ reported by solar neutrino experiments and the KamLAND experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.11760v1-abstract-full').style.display = 'none'; document.getElementById('2006.11760v1-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 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">29 pages, 14 plots, 7 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.08745">arXiv:2005.08745</a> <span> [<a href="https://arxiv.org/pdf/2005.08745">pdf</a>, <a href="https://arxiv.org/format/2005.08745">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> TAO Conceptual Design Report: A Precision Measurement of the Reactor Antineutrino Spectrum with Sub-percent Energy Resolution </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/hep-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/hep-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/hep-ex?searchtype=author&query=Ali%2C+N">Nawab Ali</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/hep-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/hep-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/hep-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/hep-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/hep-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/hep-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/hep-ex?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/hep-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/hep-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/hep-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/hep-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/hep-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/hep-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/hep-ex?searchtype=author&query=Biare%2C+D">David Biare</a> , et al. (568 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.08745v1-abstract-short" style="display: inline;"> The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). A ton-level liquid scintillator detector will be placed at about 30 m from a core of the Taishan Nuclear Power Plant. The reactor antineutrino spectrum will be measured with sub-percent energy resolution, to provide a reference spectrum for future re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.08745v1-abstract-full').style.display = 'inline'; document.getElementById('2005.08745v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.08745v1-abstract-full" style="display: none;"> The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). A ton-level liquid scintillator detector will be placed at about 30 m from a core of the Taishan Nuclear Power Plant. The reactor antineutrino spectrum will be measured with sub-percent energy resolution, to provide a reference spectrum for future reactor neutrino experiments, and to provide a benchmark measurement to test nuclear databases. A spherical acrylic vessel containing 2.8 ton gadolinium-doped liquid scintillator will be viewed by 10 m^2 Silicon Photomultipliers (SiPMs) of >50% photon detection efficiency with almost full coverage. The photoelectron yield is about 4500 per MeV, an order higher than any existing large-scale liquid scintillator detectors. The detector operates at -50 degree C to lower the dark noise of SiPMs to an acceptable level. The detector will measure about 2000 reactor antineutrinos per day, and is designed to be well shielded from cosmogenic backgrounds and ambient radioactivities to have about 10% background-to-signal ratio. The experiment is expected to start operation in 2022. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.08745v1-abstract-full').style.display = 'none'; document.getElementById('2005.08745v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">134 pages, 114 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/2004.08254">arXiv:2004.08254</a> <span> [<a href="https://arxiv.org/pdf/2004.08254">pdf</a>, <a href="https://arxiv.org/format/2004.08254">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/10.1088/1748-0221/15/10/P10005">10.1088/1748-0221/15/10/P10005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Event reconstruction for KM3NeT/ORCA using convolutional neural networks </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">Arnauld Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Garre%2C+S+A">Sergio Alves Garre</a>, <a href="/search/hep-ex?searchtype=author&query=Aly%2C+Z">Zineb Aly</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">Fabrizio Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">Michel Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">Giorgos Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">Marco Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anguita%2C+M">Mancia Anguita</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">Gisela Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">Miquel Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">Julien Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">Christos Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">Giancarlo Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">Bruny Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">Suzan Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">Meriem Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">Edward Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">Vincent Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">Simone Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Biagioni%2C+A">Andrea Biagioni</a>, <a href="/search/hep-ex?searchtype=author&query=Bissinger%2C+M">Matthias Bissinger</a>, <a href="/search/hep-ex?searchtype=author&query=Boettcher%2C+M">Markus Boettcher</a>, <a href="/search/hep-ex?searchtype=author&query=Boumaaza%2C+J">Jihad Boumaaza</a>, <a href="/search/hep-ex?searchtype=author&query=Bouta%2C+M">Mohammed Bouta</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="2004.08254v1-abstract-short" style="display: inline;"> The KM3NeT research infrastructure is currently under construction at two locations in the Mediterranean Sea. The KM3NeT/ORCA water-Cherenkov neutrino detector off the French coast will instrument several megatons of seawater with photosensors. Its main objective is the determination of the neutrino mass ordering. This work aims at demonstrating the general applicability of deep convolutional neur… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.08254v1-abstract-full').style.display = 'inline'; document.getElementById('2004.08254v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.08254v1-abstract-full" style="display: none;"> The KM3NeT research infrastructure is currently under construction at two locations in the Mediterranean Sea. The KM3NeT/ORCA water-Cherenkov neutrino detector off the French coast will instrument several megatons of seawater with photosensors. Its main objective is the determination of the neutrino mass ordering. This work aims at demonstrating the general applicability of deep convolutional neural networks to neutrino telescopes, using simulated datasets for the KM3NeT/ORCA detector as an example. To this end, the networks are employed to achieve reconstruction and classification tasks that constitute an alternative to the analysis pipeline presented for KM3NeT/ORCA in the KM3NeT Letter of Intent. They are used to infer event reconstruction estimates for the energy, the direction, and the interaction point of incident neutrinos. The spatial distribution of Cherenkov light generated by charged particles induced in neutrino interactions is classified as shower- or track-like, and the main background processes associated with the detection of atmospheric neutrinos are recognized. Performance comparisons to machine-learning classification and maximum-likelihood reconstruction algorithms previously developed for KM3NeT/ORCA are provided. It is shown that this application of deep convolutional neural networks to simulated datasets for a large-volume neutrino telescope yields competitive reconstruction results and performance improvements with respect to classical approaches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.08254v1-abstract-full').style.display = 'none'; document.getElementById('2004.08254v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 P10005 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.00112">arXiv:1910.00112</a> <span> [<a href="https://arxiv.org/pdf/1910.00112">pdf</a>, <a href="https://arxiv.org/format/1910.00112">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> </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.cpc.2020.107433">10.1016/j.cpc.2020.107433 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Control Unit of the KM3NeT Data Acquisition System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Bendahman%2C+M">M. Bendahman</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Biagioni%2C+A">A. Biagioni</a>, <a href="/search/hep-ex?searchtype=author&query=Bissinger%2C+M">M. Bissinger</a>, <a href="/search/hep-ex?searchtype=author&query=Boumaaza%2C+J">J. Boumaaza</a>, <a href="/search/hep-ex?searchtype=author&query=Bourret%2C+S">S. Bourret</a>, <a href="/search/hep-ex?searchtype=author&query=Bouta%2C+M">M. Bouta</a>, <a href="/search/hep-ex?searchtype=author&query=Bouvet%2C+G">G. Bouvet</a>, <a href="/search/hep-ex?searchtype=author&query=Bouwhuis%2C+M">M. Bouwhuis</a>, <a href="/search/hep-ex?searchtype=author&query=Bozza%2C+C">C. Bozza</a> , et al. (195 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1910.00112v1-abstract-short" style="display: inline;"> The KM3NeT Collaboration runs a multi-site neutrino observatory in the Mediterranean Sea. Water Cherenkov particle detectors, deep in the sea and far off the coasts of France and Italy, are already taking data while incremental construction progresses. Data Acquisition Control software is operating off-shore detectors as well as testing and qualification stations for their components. The software… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00112v1-abstract-full').style.display = 'inline'; document.getElementById('1910.00112v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.00112v1-abstract-full" style="display: none;"> The KM3NeT Collaboration runs a multi-site neutrino observatory in the Mediterranean Sea. Water Cherenkov particle detectors, deep in the sea and far off the coasts of France and Italy, are already taking data while incremental construction progresses. Data Acquisition Control software is operating off-shore detectors as well as testing and qualification stations for their components. The software, named Control Unit, is highly modular. It can undergo upgrades and reconfiguration with the acquisition running. Interplay with the central database of the Collaboration is obtained in a way that allows for data taking even if Internet links fail. In order to simplify the management of computing resources in the long term, and to cope with possible hardware failures of one or more computers, the KM3NeT Control Unit software features a custom dynamic resource provisioning and failover technology, which is especially important for ensuring continuity in case of rare transient events in multi-messenger astronomy. The software architecture relies on ubiquitous tools and broadly adopted technologies and has been successfully tested on several operating systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00112v1-abstract-full').style.display = 'none'; document.getElementById('1910.00112v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.02704">arXiv:1906.02704</a> <span> [<a href="https://arxiv.org/pdf/1906.02704">pdf</a>, <a href="https://arxiv.org/format/1906.02704">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-020-7629-z">10.1140/epjc/s10052-020-7629-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dependence of atmospheric muon flux on seawater depth measured with the first KM3NeT detection units </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Ageron%2C+M">M. Ageron</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Aublin%2C+J">J. Aublin</a>, <a href="/search/hep-ex?searchtype=author&query=Bagatelas%2C+C">C. Bagatelas</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Pree%2C+S+B+d">S. Basegmez du Pree</a>, <a href="/search/hep-ex?searchtype=author&query=Belias%2C+A">A. Belias</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=van+Beveren%2C+V">V. van Beveren</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Biagioni%2C+A">A. Biagioni</a>, <a href="/search/hep-ex?searchtype=author&query=Bianucci%2C+S">S. Bianucci</a>, <a href="/search/hep-ex?searchtype=author&query=Billault%2C+M">M. Billault</a>, <a href="/search/hep-ex?searchtype=author&query=Bissinger%2C+M">M. Bissinger</a>, <a href="/search/hep-ex?searchtype=author&query=de+Boer%2C+R">R. de Boer</a> , et al. (240 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="1906.02704v3-abstract-short" style="display: inline;"> KM3NeT is a research infrastructure located in the Mediterranean Sea, that will consist of two deep-sea Cherenkov neutrino detectors. With one detector (ARCA), the KM3NeT Collaboration aims at identifying and studying TeV-PeV astrophysical neutrino sources. With the other detector (ORCA), the neutrino mass ordering will be determined by studying GeV-scale atmospheric neutrino oscillations. The fir… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.02704v3-abstract-full').style.display = 'inline'; document.getElementById('1906.02704v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.02704v3-abstract-full" style="display: none;"> KM3NeT is a research infrastructure located in the Mediterranean Sea, that will consist of two deep-sea Cherenkov neutrino detectors. With one detector (ARCA), the KM3NeT Collaboration aims at identifying and studying TeV-PeV astrophysical neutrino sources. With the other detector (ORCA), the neutrino mass ordering will be determined by studying GeV-scale atmospheric neutrino oscillations. The first KM3NeT detection units were deployed at the Italian and French sites between 2015 and 2017. In this paper, a description of the detector is presented, together with a summary of the procedures used to calibrate the detector in-situ. Finally, the measurement of the atmospheric muon flux between 2232-3386 m seawater depth is obtained. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.02704v3-abstract-full').style.display = 'none'; document.getElementById('1906.02704v3-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 February, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">15 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 80, 99 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1612.05621">arXiv:1612.05621</a> <span> [<a href="https://arxiv.org/pdf/1612.05621">pdf</a>, <a href="https://arxiv.org/format/1612.05621">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP05(2017)008">10.1007/JHEP05(2017)008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Intrinsic limits on resolutions in muon- and electron-neutrino charged-current events in the KM3NeT/ORCA detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Adri%C3%A1n-Mart%C3%ADnez%2C+S">S. Adri谩n-Mart铆nez</a>, <a href="/search/hep-ex?searchtype=author&query=Ageron%2C+M">M. Ageron</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Anassontzis%2C+E+G">E. G. Anassontzis</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Avgitas%2C+T">T. Avgitas</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarito%2C+E">E. Barbarito</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Barrios-Mart%C3%AD%2C+J">J. Barrios-Mart铆</a>, <a href="/search/hep-ex?searchtype=author&query=Belias%2C+A">A. Belias</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+v+d">A. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Beurthey%2C+S">S. Beurthey</a>, <a href="/search/hep-ex?searchtype=author&query=van+Beveren%2C+V">V. van Beveren</a>, <a href="/search/hep-ex?searchtype=author&query=Beverini%2C+N">N. Beverini</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Biagioni%2C+A">A. Biagioni</a> , et al. (228 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="1612.05621v2-abstract-short" style="display: inline;"> Studying atmospheric neutrino oscillations in the few-GeV range with a multimegaton detector promises to determine the neutrino mass hierarchy. This is the main science goal pursued by the future KM3NeT/ORCA water Cherenkov detector in the Mediterranean Sea. In this paper, the processes that limit the obtainable resolution in both energy and direction in charged-current neutrino events in the ORCA… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.05621v2-abstract-full').style.display = 'inline'; document.getElementById('1612.05621v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1612.05621v2-abstract-full" style="display: none;"> Studying atmospheric neutrino oscillations in the few-GeV range with a multimegaton detector promises to determine the neutrino mass hierarchy. This is the main science goal pursued by the future KM3NeT/ORCA water Cherenkov detector in the Mediterranean Sea. In this paper, the processes that limit the obtainable resolution in both energy and direction in charged-current neutrino events in the ORCA detector are investigated. These processes include the composition of the hadronic fragmentation products, the subsequent particle propagation and the photon-sampling fraction of the detector. GEANT simulations of neutrino interactions in seawater produced by GENIE are used to study the effects in the 1 - 20 GeV range. It is found that fluctuations in the hadronic cascade in conjunction with the variation of the inelasticity y are most detrimental to the resolutions. The effect of limited photon sampling in the detector is of significantly less importance. These results will therefore also be applicable to similar detectors/media, such as those in ice. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.05621v2-abstract-full').style.display = 'none'; document.getElementById('1612.05621v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 May, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">37 pages, 28 figures, JHEP published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> The KM3NeT collaboration, Adri{谩}n-Mart{\'谋}nez, S., Ageron, M. et al. J. High Energ. Phys. (2017) 2017: 8 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1601.07459">arXiv:1601.07459</a> <span> [<a href="https://arxiv.org/pdf/1601.07459">pdf</a>, <a href="https://arxiv.org/format/1601.07459">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/0954-3899/43/8/084001">10.1088/0954-3899/43/8/084001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Letter of Intent for KM3NeT 2.0 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Adri%C3%A1n-Mart%C3%ADnez%2C+S">S. Adri谩n-Mart铆nez</a>, <a href="/search/hep-ex?searchtype=author&query=Ageron%2C+M">M. Ageron</a>, <a href="/search/hep-ex?searchtype=author&query=Aharonian%2C+F">F. Aharonian</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Anassontzis%2C+E">E. Anassontzis</a>, <a href="/search/hep-ex?searchtype=author&query=Andre%2C+M">M. Andre</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G">G. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Avgitas%2C+T">T. Avgitas</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarito%2C+E">E. Barbarito</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Barrios-Mart%C3%AD%2C+J">J. Barrios-Mart铆</a>, <a href="/search/hep-ex?searchtype=author&query=Belhorma%2C+B">B. Belhorma</a>, <a href="/search/hep-ex?searchtype=author&query=Belias%2C+A">A. Belias</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+v+d">A. van den Berg</a>, <a href="/search/hep-ex?searchtype=author&query=Bertin%2C+V">V. Bertin</a>, <a href="/search/hep-ex?searchtype=author&query=Beurthey%2C+S">S. Beurthey</a>, <a href="/search/hep-ex?searchtype=author&query=van+Beveren%2C+V">V. van Beveren</a>, <a href="/search/hep-ex?searchtype=author&query=Beverini%2C+N">N. Beverini</a> , et al. (222 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="1601.07459v2-abstract-short" style="display: inline;"> The main objectives of the KM3NeT Collaboration are i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and ii) the determination of the mass hierarchy of neutrinos. These objectives are strongly motivated by two recent important discoveries, namely: 1) The high-energy astrophysical neutrino signal reported by IceCube and 2) the sizable contribution of elect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1601.07459v2-abstract-full').style.display = 'inline'; document.getElementById('1601.07459v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1601.07459v2-abstract-full" style="display: none;"> The main objectives of the KM3NeT Collaboration are i) the discovery and subsequent observation of high-energy neutrino sources in the Universe and ii) the determination of the mass hierarchy of neutrinos. These objectives are strongly motivated by two recent important discoveries, namely: 1) The high-energy astrophysical neutrino signal reported by IceCube and 2) the sizable contribution of electron neutrinos to the third neutrino mass eigenstate as reported by Daya Bay, Reno and others. To meet these objectives, the KM3NeT Collaboration plans to build a new Research Infrastructure consisting of a network of deep-sea neutrino telescopes in the Mediterranean Sea. A phased and distributed implementation is pursued which maximises the access to regional funds, the availability of human resources and the synergetic opportunities for the earth and sea sciences community. Three suitable deep-sea sites are identified, namely off-shore Toulon (France), Capo Passero (Italy) and Pylos (Greece). The infrastructure will consist of three so-called building blocks. A building block comprises 115 strings, each string comprises 18 optical modules and each optical module comprises 31 photo-multiplier tubes. Each building block thus constitutes a 3-dimensional array of photo sensors that can be used to detect the Cherenkov light produced by relativistic particles emerging from neutrino interactions. Two building blocks will be configured to fully explore the IceCube signal with different methodology, improved resolution and complementary field of view, including the Galactic plane. One building block will be configured to precisely measure atmospheric neutrino oscillations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1601.07459v2-abstract-full').style.display = 'none'; document.getElementById('1601.07459v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 January, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">119 pages, published version, revised Eq. 6, 7</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Physics G: Nuclear and Particle Physics, 43 (8), 084001, 2016 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1510.01561">arXiv:1510.01561</a> <span> [<a href="https://arxiv.org/pdf/1510.01561">pdf</a>, <a href="https://arxiv.org/format/1510.01561">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/10.1140/epjc/s10052-015-3868-9">10.1140/epjc/s10052-015-3868-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The prototype detection unit of the KM3NeT detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=KM3NeT+Collaboration"> KM3NeT Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Adri%C3%A1n-Mart%C3%ADnez%2C+S">S. Adri谩n-Mart铆nez</a>, <a href="/search/hep-ex?searchtype=author&query=Ageron%2C+M">M. Ageron</a>, <a href="/search/hep-ex?searchtype=author&query=Aharonian%2C+F">F. Aharonian</a>, <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+A">A. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Anassontzis%2C+E+G">E. G. Anassontzis</a>, <a href="/search/hep-ex?searchtype=author&query=Androulakis%2C+G+C">G. C. Androulakis</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Anvar%2C+S">S. Anvar</a>, <a href="/search/hep-ex?searchtype=author&query=Ardid%2C+M">M. Ardid</a>, <a href="/search/hep-ex?searchtype=author&query=Avgitas%2C+T">T. Avgitas</a>, <a href="/search/hep-ex?searchtype=author&query=Balasi%2C+K">K. Balasi</a>, <a href="/search/hep-ex?searchtype=author&query=Band%2C+H">H. Band</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarito%2C+E">E. Barbarito</a>, <a href="/search/hep-ex?searchtype=author&query=Barbato%2C+F">F. Barbato</a>, <a href="/search/hep-ex?searchtype=author&query=Baret%2C+B">B. Baret</a>, <a href="/search/hep-ex?searchtype=author&query=Baron%2C+S">S. Baron</a>, <a href="/search/hep-ex?searchtype=author&query=Barrios%2C+J">J. Barrios</a>, <a href="/search/hep-ex?searchtype=author&query=Belias%2C+A">A. Belias</a>, <a href="/search/hep-ex?searchtype=author&query=Berbee%2C+E">E. Berbee</a>, <a href="/search/hep-ex?searchtype=author&query=Berg%2C+A+M+v+d">A. M. van den Berg</a> , et al. (224 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1510.01561v2-abstract-short" style="display: inline;"> A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80km offshore the Italian coast. KM3NeT in its final configuration will contain several hundreds of detection units. Each detection unit is a mechanical structure anchored to the sea floor, held vertical by a submerged buoy and supporting optical modules for the detection of Cherenkov light emitt… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.01561v2-abstract-full').style.display = 'inline'; document.getElementById('1510.01561v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1510.01561v2-abstract-full" style="display: none;"> A prototype detection unit of the KM3NeT deep-sea neutrino telescope has been installed at 3500m depth 80km offshore the Italian coast. KM3NeT in its final configuration will contain several hundreds of detection units. Each detection unit is a mechanical structure anchored to the sea floor, held vertical by a submerged buoy and supporting optical modules for the detection of Cherenkov light emitted by charged secondary particles emerging from neutrino interactions. This prototype string implements three optical modules with 31 photomultiplier tubes each. These optical modules were developed by the KM3NeT Collaboration to enhance the detection capability of neutrino interactions. The prototype detection unit was operated since its deployment in May 2014 until its decommissioning in July 2015. Reconstruction of the particle trajectories from the data requires a nanosecond accuracy in the time calibration. A procedure for relative time calibration of the photomultiplier tubes contained in each optical module is described. This procedure is based on the measured coincidences produced in the sea by the 40K background light and can easily be expanded to a detector with several thousands of optical modules. The time offsets between the different optical modules are obtained using LED nanobeacons mounted inside them. A set of data corresponding to 600 hours of livetime was analysed. The results show good agreement with Monte Carlo simulations of the expected optical background and the signal from atmospheric muons. An almost background-free sample of muons was selected by filtering the time correlated signals on all the three optical modules. The zenith angle of the selected muons was reconstructed with a precision of about 3掳. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1510.01561v2-abstract-full').style.display = 'none'; document.getElementById('1510.01561v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication by EPJ C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2016) 76:54 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.0849">arXiv:1412.0849</a> <span> [<a href="https://arxiv.org/pdf/1412.0849">pdf</a>, <a href="https://arxiv.org/ps/1412.0849">ps</a>, <a href="https://arxiv.org/format/1412.0849">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> <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.2014.12.010">10.1016/j.astropartphys.2014.12.010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the atmospheric muon depth intensity relation with the NEMO Phase-2 tower </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Aiello%2C+S">S. Aiello</a>, <a href="/search/hep-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/hep-ex?searchtype=author&query=Anghinolfi%2C+M">M. Anghinolfi</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarino%2C+G">G. Barbarino</a>, <a href="/search/hep-ex?searchtype=author&query=Barbarito%2C+E">E. Barbarito</a>, <a href="/search/hep-ex?searchtype=author&query=Barbato%2C+F">F. Barbato</a>, <a href="/search/hep-ex?searchtype=author&query=Beverini%2C+N">N. Beverini</a>, <a href="/search/hep-ex?searchtype=author&query=Biagi%2C+S">S. Biagi</a>, <a href="/search/hep-ex?searchtype=author&query=Bouhadef%2C+B">B. Bouhadef</a>, <a href="/search/hep-ex?searchtype=author&query=Bozza%2C+C">C. Bozza</a>, <a href="/search/hep-ex?searchtype=author&query=Cacopardo%2C+G">G. Cacopardo</a>, <a href="/search/hep-ex?searchtype=author&query=Calamai%2C+M">M. Calamai</a>, <a href="/search/hep-ex?searchtype=author&query=Cal%C3%AC%2C+C">C. Cal矛</a>, <a href="/search/hep-ex?searchtype=author&query=Capone%2C+A">A. Capone</a>, <a href="/search/hep-ex?searchtype=author&query=Caruso%2C+F">F. Caruso</a>, <a href="/search/hep-ex?searchtype=author&query=Ceres%2C+A">A. Ceres</a>, <a href="/search/hep-ex?searchtype=author&query=Chiarusi%2C+T">T. Chiarusi</a>, <a href="/search/hep-ex?searchtype=author&query=Circella%2C+M">M. Circella</a>, <a href="/search/hep-ex?searchtype=author&query=Cocimano%2C+R">R. Cocimano</a>, <a href="/search/hep-ex?searchtype=author&query=Coniglione%2C+R">R. Coniglione</a>, <a href="/search/hep-ex?searchtype=author&query=Costa%2C+M">M. Costa</a>, <a href="/search/hep-ex?searchtype=author&query=Cuttone%2C+G">G. Cuttone</a>, <a href="/search/hep-ex?searchtype=author&query=D%27Amato%2C+C">C. D'Amato</a>, <a href="/search/hep-ex?searchtype=author&query=D%27Amico%2C+A">A. D'Amico</a>, <a href="/search/hep-ex?searchtype=author&query=De+Bonis%2C+G">G. De Bonis</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="1412.0849v2-abstract-short" style="display: inline;"> The results of the analysis of the data collected with the NEMO Phase-2 tower, deployed at 3500 m depth about 80 km off-shore Capo Passero (Italy), are presented. Cherenkov photons detected with the photomultipliers tubes were used to reconstruct the tracks of atmospheric muons. Their zenith-angle distribution was measured and the results compared with Monte Carlo simulations. An evaluation of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0849v2-abstract-full').style.display = 'inline'; document.getElementById('1412.0849v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.0849v2-abstract-full" style="display: none;"> The results of the analysis of the data collected with the NEMO Phase-2 tower, deployed at 3500 m depth about 80 km off-shore Capo Passero (Italy), are presented. Cherenkov photons detected with the photomultipliers tubes were used to reconstruct the tracks of atmospheric muons. Their zenith-angle distribution was measured and the results compared with Monte Carlo simulations. An evaluation of the systematic effects due to uncertainties on environmental and detector parameters is also included. The associated depth intensity relation was evaluated and compared with previous measurements and theoretical predictions. With the present analysis, the muon depth intensity relation has been measured up to 13 km of water equivalent. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0849v2-abstract-full').style.display = 'none'; document.getElementById('1412.0849v2-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 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">submitted to Astroparticle Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astroparticle Physics 66 (2015) 1 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.3028">arXiv:1406.3028</a> <span> [<a href="https://arxiv.org/pdf/1406.3028">pdf</a>, <a href="https://arxiv.org/format/1406.3028">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> <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="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=BDX+Collaboration"> BDX Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/hep-ex?searchtype=author&query=Celentano%2C+A">A. Celentano</a>, <a href="/search/hep-ex?searchtype=author&query=De+Vita%2C+R">R. De Vita</a>, <a href="/search/hep-ex?searchtype=author&query=Izaguirre%2C+E">E. Izaguirre</a>, <a href="/search/hep-ex?searchtype=author&query=Krnjaic%2C+G">G. Krnjaic</a>, <a href="/search/hep-ex?searchtype=author&query=Smith%2C+E">E. Smith</a>, <a href="/search/hep-ex?searchtype=author&query=Stepanyan%2C+S">S. Stepanyan</a>, <a href="/search/hep-ex?searchtype=author&query=Bersani%2C+A">A. Bersani</a>, <a href="/search/hep-ex?searchtype=author&query=Fanchini%2C+E">E. Fanchini</a>, <a href="/search/hep-ex?searchtype=author&query=Fegan%2C+S">S. Fegan</a>, <a href="/search/hep-ex?searchtype=author&query=Musico%2C+P">P. Musico</a>, <a href="/search/hep-ex?searchtype=author&query=Osipenko%2C+M">M. Osipenko</a>, <a href="/search/hep-ex?searchtype=author&query=Ripani%2C+M">M. Ripani</a>, <a href="/search/hep-ex?searchtype=author&query=Santopinto%2C+E">E. Santopinto</a>, <a href="/search/hep-ex?searchtype=author&query=Taiuti%2C+M">M. Taiuti</a>, <a href="/search/hep-ex?searchtype=author&query=Schuster%2C+P">P. Schuster</a>, <a href="/search/hep-ex?searchtype=author&query=Toro%2C+N">N. Toro</a>, <a href="/search/hep-ex?searchtype=author&query=Dalton%2C+M">M. Dalton</a>, <a href="/search/hep-ex?searchtype=author&query=Freyberger%2C+A">A. Freyberger</a>, <a href="/search/hep-ex?searchtype=author&query=Girod%2C+F+-">F. -X. Girod</a>, <a href="/search/hep-ex?searchtype=author&query=Kubarovsky%2C+V">V. Kubarovsky</a>, <a href="/search/hep-ex?searchtype=author&query=Ungaro%2C+M">M. Ungaro</a>, <a href="/search/hep-ex?searchtype=author&query=De+Cataldo%2C+G">G. De Cataldo</a>, <a href="/search/hep-ex?searchtype=author&query=De+Leo%2C+R">R. De Leo</a> , et al. (61 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="1406.3028v1-abstract-short" style="display: inline;"> MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This Letter of Intent presents the MeV-GeV DM discovery potential for a 1 m$^3$ segmented plastic scintillator detector placed downstream of the beam-dump at one of the high intensity JLab experimental Halls, receiving up to 10$^{22}$ electrons-on-target (EOT) in a one-year period. This experiment (Beam-Dump eXperi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3028v1-abstract-full').style.display = 'inline'; document.getElementById('1406.3028v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.3028v1-abstract-full" style="display: none;"> MeV-GeV dark matter (DM) is theoretically well motivated but remarkably unexplored. This Letter of Intent presents the MeV-GeV DM discovery potential for a 1 m$^3$ segmented plastic scintillator detector placed downstream of the beam-dump at one of the high intensity JLab experimental Halls, receiving up to 10$^{22}$ electrons-on-target (EOT) in a one-year period. This experiment (Beam-Dump eXperiment or BDX) is sensitive to DM-nucleon elastic scattering at the level of a thousand counts per year, with very low threshold recoil energies ($\sim$1 MeV), and limited only by reducible cosmogenic backgrounds. Sensitivity to DM-electron elastic scattering and/or inelastic DM would be below 10 counts per year after requiring all electromagnetic showers in the detector to exceed a few-hundred MeV, which dramatically reduces or altogether eliminates all backgrounds. Detailed Monte Carlo simulations are in progress to finalize the detector design and experimental set up. An existing 0.036 m$^3$ prototype based on the same technology will be used to validate simulations with background rate estimates, driving the necessary R$\&$D towards an optimized detector. The final detector design and experimental set up will be presented in a full proposal to be submitted to the next JLab PAC. A fully realized experiment would be sensitive to large regions of DM parameter space, exceeding the discovery potential of existing and planned experiments by two orders of magnitude in the MeV-GeV DM mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.3028v1-abstract-full').style.display = 'none'; document.getElementById('1406.3028v1-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 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">28 pages, 17 figures, submitted to JLab PAC 42</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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