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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/2502.15991">arXiv:2502.15991</a> <span> [<a href="https://arxiv.org/pdf/2502.15991">pdf</a>, <a href="https://arxiv.org/format/2502.15991">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"> Characterization of external cross-talk from silicon photomultipliers in a liquid xenon detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Gallacher%2C+D">D Gallacher</a>, <a href="/search/hep-ex?searchtype=author&query=Croix%2C+A+d+S">A. de St. Croix</a>, <a href="/search/hep-ex?searchtype=author&query=Bron%2C+S">S. Bron</a>, <a href="/search/hep-ex?searchtype=author&query=Rebeiro%2C+B+M">B. M. Rebeiro</a>, <a href="/search/hep-ex?searchtype=author&query=McElroy%2C+T">T. McElroy</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chana%2C+B">B. Chana</a>, <a href="/search/hep-ex?searchtype=author&query=Charlesworth%2C+Z">Z. Charlesworth</a>, <a href="/search/hep-ex?searchtype=author&query=Egan%2C+E">E. Egan</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">M. Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">L. Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Giampa%2C+P">P. Giampa</a>, <a href="/search/hep-ex?searchtype=author&query=Goeldi%2C+D">D. Goeldi</a>, <a href="/search/hep-ex?searchtype=author&query=Lavoie%2C+S">S. Lavoie</a>, <a href="/search/hep-ex?searchtype=author&query=Lefebvre%2C+J">J. Lefebvre</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+X">X. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">C. Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Margetak%2C+P">P. Margetak</a>, <a href="/search/hep-ex?searchtype=author&query=Massacret%2C+N">N. Massacret</a>, <a href="/search/hep-ex?searchtype=author&query=Nowicki%2C+S+C">S. C. Nowicki</a>, <a href="/search/hep-ex?searchtype=author&query=Rasiwala%2C+H">H. Rasiwala</a>, <a href="/search/hep-ex?searchtype=author&query=Raymond%2C+K">K. Raymond</a>, <a href="/search/hep-ex?searchtype=author&query=Reti%C3%A8re%2C+F">F. Reti猫re</a> , et al. (6 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="2502.15991v1-abstract-short" style="display: inline;"> The Light-only Liquid Xenon experiment (LoLX) employs a small-scale detector equipped with 96 Hamamatsu VUV4 silicon photomultipliers (SiPMs) submerged in 5 kg of liquid xenon (LXe) to perform characterization measurements of light production, transport and detection in xenon. In this work, we perform a novel measurement of the "external cross-talk" (ExCT) of SiPMs, where photons produced in the a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.15991v1-abstract-full').style.display = 'inline'; document.getElementById('2502.15991v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2502.15991v1-abstract-full" style="display: none;"> The Light-only Liquid Xenon experiment (LoLX) employs a small-scale detector equipped with 96 Hamamatsu VUV4 silicon photomultipliers (SiPMs) submerged in 5 kg of liquid xenon (LXe) to perform characterization measurements of light production, transport and detection in xenon. In this work, we perform a novel measurement of the "external cross-talk" (ExCT) of SiPMs, where photons produced in the avalanche process escape the device and produce correlated signals on other SiPMs. SiPMs are the photodetector technology of choice for next generation rare-event search experiments; understanding the sources and effects of correlated noise in SiPMs is critical for producing accurate estimates of detector performance and sensitivity projections. We measure the probability to observe ExCT through timing correlation of detected photons in low-light conditions within LoLX. Measurements of SiPM ExCT are highly detector dependent; thus the ExCT process is simulated and modelled using the Geant4 framework. Using the simulation, we determine the average transport and detection efficiency for ExCT photons within LoLX, a necessary input to extract the expected ExCT probability from the data. For an applied overvoltage of 4 V and 5 V, we measure a mean number of photons emitted into the LXe per avalanche of $0.5^{+0.3}_{-0.2}$ and $0.6^{+0.3}_{-0.2}$, respectively. Using an optical model to describe photon transmission through the SiPM surface, this corresponds to an estimated photon yield inside the bulk silicon of $20^{+11}_{-9}$ and $25^{+12}_{-9}$ photons per avalanche. The relative increase in intensity of SiPM ExCT emission between 4 V and 5 V is consistent with expectation for the linear increase of gain with respect to overvoltage. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2502.15991v1-abstract-full').style.display = 'none'; document.getElementById('2502.15991v1-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 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">15 pages, 11 figures, submitted to EPJC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.00285">arXiv:2407.00285</a> <span> [<a href="https://arxiv.org/pdf/2407.00285">pdf</a>, <a href="https://arxiv.org/format/2407.00285">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</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"> Imaging of single barium atoms in a second matrix site in solid xenon for barium tagging in a $^{136}$Xe double beta decay experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Yvaine%2C+M">M. Yvaine</a>, <a href="/search/hep-ex?searchtype=author&query=Fairbank%2C+D">D. Fairbank</a>, <a href="/search/hep-ex?searchtype=author&query=Soderstrom%2C+J">J. Soderstrom</a>, <a href="/search/hep-ex?searchtype=author&query=Taylor%2C+C">C. Taylor</a>, <a href="/search/hep-ex?searchtype=author&query=Stanley%2C+J">J. Stanley</a>, <a href="/search/hep-ex?searchtype=author&query=Walton%2C+T">T. Walton</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Iverson%2C+A">A. Iverson</a>, <a href="/search/hep-ex?searchtype=author&query=Fairbank%2C+W">W. Fairbank</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Amy%2C+A">A. Amy</a>, <a href="/search/hep-ex?searchtype=author&query=Angelico%2C+E">E. Angelico</a>, <a href="/search/hep-ex?searchtype=author&query=Anker%2C+A">A. Anker</a>, <a href="/search/hep-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/hep-ex?searchtype=author&query=Atencio%2C+A">A. Atencio</a>, <a href="/search/hep-ex?searchtype=author&query=Bane%2C+J">J. Bane</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bernard%2C+E+P">E. P. Bernard</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Bolotnikov%2C+A">A. Bolotnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Breslin%2C+J">J. Breslin</a>, <a href="/search/hep-ex?searchtype=author&query=Breur%2C+P+A">P. A. Breur</a>, <a href="/search/hep-ex?searchtype=author&query=Brodsky%2C+J+P">J. P. Brodsky</a>, <a href="/search/hep-ex?searchtype=author&query=Brown%2C+E">E. Brown</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a> , et al. (112 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="2407.00285v1-abstract-short" style="display: inline;"> Neutrinoless double beta decay is one of the most sensitive probes for new physics beyond the Standard Model of particle physics. One of the isotopes under investigation is $^{136}$Xe, which would double beta decay into $^{136}$Ba. Detecting the single $^{136}$Ba daughter provides a sort of ultimate tool in the discrimination against backgrounds. Previous work demonstrated the ability to perform s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00285v1-abstract-full').style.display = 'inline'; document.getElementById('2407.00285v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.00285v1-abstract-full" style="display: none;"> Neutrinoless double beta decay is one of the most sensitive probes for new physics beyond the Standard Model of particle physics. One of the isotopes under investigation is $^{136}$Xe, which would double beta decay into $^{136}$Ba. Detecting the single $^{136}$Ba daughter provides a sort of ultimate tool in the discrimination against backgrounds. Previous work demonstrated the ability to perform single atom imaging of Ba atoms in a single-vacancy site of a solid xenon matrix. In this paper, the effort to identify signal from individual barium atoms is extended to Ba atoms in a hexa-vacancy site in the matrix and is achieved despite increased photobleaching in this site. Abrupt fluorescence turn-off of a single Ba atom is also observed. Significant recovery of fluorescence signal lost through photobleaching is demonstrated upon annealing of Ba deposits in the Xe ice. Following annealing, it is observed that Ba atoms in the hexa-vacancy site exhibit antibleaching while Ba atoms in the tetra-vacancy site exhibit bleaching. This may be evidence for a matrix site transfer upon laser excitation. Our findings offer a path of continued research toward tagging of Ba daughters in all significant sites in solid xenon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.00285v1-abstract-full').style.display = 'none'; document.getElementById('2407.00285v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">9 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/2405.19419">arXiv:2405.19419</a> <span> [<a href="https://arxiv.org/pdf/2405.19419">pdf</a>, <a href="https://arxiv.org/format/2405.19419">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.110.093002">10.1103/PhysRevD.110.093002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Supernova electron-neutrino interactions with xenon in the nEXO detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=nEXO+Collaboration"> nEXO Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Hedges%2C+S">S. Hedges</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Angelico%2C+E">E. Angelico</a>, <a href="/search/hep-ex?searchtype=author&query=Brodsky%2C+J+P">J. P. Brodsky</a>, <a href="/search/hep-ex?searchtype=author&query=Richardson%2C+G">G. Richardson</a>, <a href="/search/hep-ex?searchtype=author&query=Wilde%2C+S">S. Wilde</a>, <a href="/search/hep-ex?searchtype=author&query=Amy%2C+A">A. Amy</a>, <a href="/search/hep-ex?searchtype=author&query=Anker%2C+A">A. Anker</a>, <a href="/search/hep-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/hep-ex?searchtype=author&query=Arsenault%2C+P">P. Arsenault</a>, <a href="/search/hep-ex?searchtype=author&query=Atencio%2C+A">A. Atencio</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Bane%2C+J">J. Bane</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bernard%2C+E+P">E. P. Bernard</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Bolotnikov%2C+A">A. Bolotnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Breslin%2C+J">J. Breslin</a>, <a href="/search/hep-ex?searchtype=author&query=Breur%2C+P+A">P. A. Breur</a>, <a href="/search/hep-ex?searchtype=author&query=Brown%2C+E">E. Brown</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Caden%2C+E">E. Caden</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=Cao%2C+L+Q">L. Q. Cao</a> , et al. (122 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="2405.19419v2-abstract-short" style="display: inline;"> Electron-neutrino charged-current interactions with xenon nuclei were modeled in the nEXO neutrinoless double-$尾$ decay detector (~5 metric ton, 90% ${}^{136}$Xe, 10% ${}^{134}$Xe) to evaluate its sensitivity to supernova neutrinos. Predictions for event rates and detectable signatures were modeled using the Model of Argon Reaction Low Energy Yields (MARLEY) event generator. We find good agreement… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19419v2-abstract-full').style.display = 'inline'; document.getElementById('2405.19419v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.19419v2-abstract-full" style="display: none;"> Electron-neutrino charged-current interactions with xenon nuclei were modeled in the nEXO neutrinoless double-$尾$ decay detector (~5 metric ton, 90% ${}^{136}$Xe, 10% ${}^{134}$Xe) to evaluate its sensitivity to supernova neutrinos. Predictions for event rates and detectable signatures were modeled using the Model of Argon Reaction Low Energy Yields (MARLEY) event generator. We find good agreement between MARLEY's predictions and existing theoretical calculations of the inclusive cross sections at supernova neutrino energies. The interactions modeled by MARLEY were simulated within the nEXO simulation framework and were run through an example reconstruction algorithm to determine the detector's efficiency for reconstructing these events. The simulated data, incorporating the detector response, were used to study the ability of nEXO to reconstruct the incident electron-neutrino spectrum and these results were extended to a larger xenon detector of the same isotope enrichment. We estimate that nEXO will be able to observe electron-neutrino interactions with xenon from supernovae as far as 5-8 kpc from Earth, while the ability to reconstruct incident electron-neutrino spectrum parameters from observed interactions in nEXO is limited to closer supernovae. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.19419v2-abstract-full').style.display = 'none'; document.getElementById('2405.19419v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 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">17 pages, 16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LLNL-JRNL-864783 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 110, 093002 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.18607">arXiv:2310.18607</a> <span> [<a href="https://arxiv.org/pdf/2310.18607">pdf</a>, <a href="https://arxiv.org/format/2310.18607">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"> Simulation Study of Photon-to-Digital Converter (PDC) Timing Specifications for LoLX Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Viet%2C+N+V+H">Nguyen V. H. Viet</a>, <a href="/search/hep-ex?searchtype=author&query=Masri%2C+A+A">Alaa Al Masri</a>, <a href="/search/hep-ex?searchtype=author&query=Nomachi%2C+M">Masaharu Nomachi</a>, <a href="/search/hep-ex?searchtype=author&query=T%C3%A9trault%2C+M">Marc-Andre T茅trault</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">Soud Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">Thomas Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">Christopher Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chana%2C+B">Bindiya Chana</a>, <a href="/search/hep-ex?searchtype=author&query=Croix%2C+A+d+S">Austin de St. Croix</a>, <a href="/search/hep-ex?searchtype=author&query=Egan%2C+E">Eamon Egan</a>, <a href="/search/hep-ex?searchtype=author&query=Francesconi%2C+M">Marco Francesconi</a>, <a href="/search/hep-ex?searchtype=author&query=Gallacher%2C+D">David Gallacher</a>, <a href="/search/hep-ex?searchtype=author&query=Galli%2C+L">Luca Galli</a>, <a href="/search/hep-ex?searchtype=author&query=Giampa%2C+P">Pietro Giampa</a>, <a href="/search/hep-ex?searchtype=author&query=Goeldi%2C+D">Damian Goeldi</a>, <a href="/search/hep-ex?searchtype=author&query=Lefebvre%2C+J">Jessee Lefebvre</a>, <a href="/search/hep-ex?searchtype=author&query=Malbrunot%2C+C">Chloe Malbrunot</a>, <a href="/search/hep-ex?searchtype=author&query=Margetak%2C+P">Peter Margetak</a>, <a href="/search/hep-ex?searchtype=author&query=Martin%2C+J">Juliette Martin</a>, <a href="/search/hep-ex?searchtype=author&query=McElroy%2C+T">Thomas McElroy</a>, <a href="/search/hep-ex?searchtype=author&query=Patel%2C+M">Mayur Patel</a>, <a href="/search/hep-ex?searchtype=author&query=Rebeiro%2C+B">Bernadette Rebeiro</a>, <a href="/search/hep-ex?searchtype=author&query=Retiere%2C+F">Fabrice Retiere</a>, <a href="/search/hep-ex?searchtype=author&query=Rtimi%2C+E+M">El Mehdi Rtimi</a>, <a href="/search/hep-ex?searchtype=author&query=Rudolph%2C+L">Lisa Rudolph</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.18607v1-abstract-short" style="display: inline;"> The Light only Liquid Xenon (LoLX) experiment is a prototype detector aimed to study liquid xenon (LXe) light properties and various photodetection technologies. LoLX is also aimed to quantify LXe's time resolution as a potential scintillator for 10~ps time-of-flight (TOF) PET. Another key goal of LoLX is to perform a time-based separation of Cerenkov and scintillation photons for new background r… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.18607v1-abstract-full').style.display = 'inline'; document.getElementById('2310.18607v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.18607v1-abstract-full" style="display: none;"> The Light only Liquid Xenon (LoLX) experiment is a prototype detector aimed to study liquid xenon (LXe) light properties and various photodetection technologies. LoLX is also aimed to quantify LXe's time resolution as a potential scintillator for 10~ps time-of-flight (TOF) PET. Another key goal of LoLX is to perform a time-based separation of Cerenkov and scintillation photons for new background rejection methods in LXe experiments. To achieve this separation, LoLX is set to be equipped with photon-to-digital converters (PDCs), a photosensor type that provides a timestamp for each observed photon. To guide the PDC design, we explore requirements for time-based Cerenkov separation. We use a PDC simulator, whose input is the light information from the Geant4-based LoLX simulation model, and evaluate the separation quality against time-to-digital converter (TDC) parameters. Simulation results with TDC parameters offer possible configurations supporting a good separation. Compared with the current filter-based approach, simulations show Cerenkov separation level increases from 54% to 71% when using PDC and time-based separation. With the current photon time profile of LoLX simulation, the results also show 71% separation is achievable with just 4 TDCs per PDC. These simulation results will lead to a specification guide for the PDC as well as expected results to compare against future PDC-based experimental measurements. In the longer term, the overall LoLX results will assist large LXe-based experiments and motivate the assembly of a LXe-based TOF-PET demonstrator system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.18607v1-abstract-full').style.display = 'none'; document.getElementById('2310.18607v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 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/2303.06311">arXiv:2303.06311</a> <span> [<a href="https://arxiv.org/pdf/2303.06311">pdf</a>, <a href="https://arxiv.org/format/2303.06311">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="Machine Learning">cs.LG</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/10.1088/1748-0221/18/06/P06005">10.1088/1748-0221/18/06/P06005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Generative Adversarial Networks for Scintillation Signal Simulation in EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Ostrovskiy%2C+I">I. Ostrovskiy</a>, <a href="/search/hep-ex?searchtype=author&query=Li%2C+Z">Z. Li</a>, <a href="/search/hep-ex?searchtype=author&query=Yang%2C+L">L. Yang</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a> , et al. (65 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.06311v2-abstract-short" style="display: inline;"> Generative Adversarial Networks trained on samples of simulated or actual events have been proposed as a way of generating large simulated datasets at a reduced computational cost. In this work, a novel approach to perform the simulation of photodetector signals from the time projection chamber of the EXO-200 experiment is demonstrated. The method is based on a Wasserstein Generative Adversarial N… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.06311v2-abstract-full').style.display = 'inline'; document.getElementById('2303.06311v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.06311v2-abstract-full" style="display: none;"> Generative Adversarial Networks trained on samples of simulated or actual events have been proposed as a way of generating large simulated datasets at a reduced computational cost. In this work, a novel approach to perform the simulation of photodetector signals from the time projection chamber of the EXO-200 experiment is demonstrated. The method is based on a Wasserstein Generative Adversarial Network - a deep learning technique allowing for implicit non-parametric estimation of the population distribution for a given set of objects. Our network is trained on real calibration data using raw scintillation waveforms as input. We find that it is able to produce high-quality simulated waveforms an order of magnitude faster than the traditional simulation approach and, importantly, generalize from the training sample and discern salient high-level features of the data. In particular, the network correctly deduces position dependency of scintillation light response in the detector and correctly recognizes dead photodetector channels. The network output is then integrated into the EXO-200 analysis framework to show that the standard EXO-200 reconstruction routine processes the simulated waveforms to produce energy distributions comparable to that of real waveforms. Finally, the remaining discrepancies and potential ways to improve the approach further are highlighted. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.06311v2-abstract-full').style.display = 'none'; document.getElementById('2303.06311v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 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">As accepted by JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 18 P06005 2023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.01103">arXiv:2303.01103</a> <span> [<a href="https://arxiv.org/pdf/2303.01103">pdf</a>, <a href="https://arxiv.org/format/2303.01103">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-1137/aceee3">10.1088/1674-1137/aceee3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Two-neutrino Double-Beta Decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ with the Complete EXO-200 Dataset </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a> , et al. (83 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="2303.01103v2-abstract-short" style="display: inline;"> A new search for two-neutrino double-beta ($2谓尾尾$) decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the additio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.01103v2-abstract-full').style.display = 'inline'; document.getElementById('2303.01103v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.01103v2-abstract-full" style="display: none;"> A new search for two-neutrino double-beta ($2谓尾尾$) decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90$\%$ confidence level half-life sensitivity of $2谓尾尾$ decay to the $0^+_1$ state of $^{136}\rm Ba$ is $2.9 \times 10^{24}~\rm yr$ using a total $^{136}\rm Xe$ exposure of $234.1~\rm kg~yr$. No statistically significant evidence for $2谓尾尾$ decay to the $0^+_1$ state is observed, leading to a lower limit of $T^{2谓}_{1/2}(0^+ \rightarrow 0^+_1) > 1.4\times10^{24}~\rm yr$ at 90$\%$ confidence level, improved by 70$\%$ relative to the current world's best constraint. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.01103v2-abstract-full').style.display = 'none'; document.getElementById('2303.01103v2-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 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 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">9 pages, 7 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chinese Physics C, Volume 47, Number 10, 2023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.00897">arXiv:2207.00897</a> <span> [<a href="https://arxiv.org/pdf/2207.00897">pdf</a>, <a href="https://arxiv.org/format/2207.00897">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.012007">10.1103/PhysRevD.107.012007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for MeV Electron Recoils from Dark Matter in EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a> , et al. (83 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="2207.00897v3-abstract-short" style="display: inline;"> We present a search for electron-recoil signatures from the charged-current absorption of fermionic dark matter using the EXO-200 detector. We report an average electron recoil background rate of $6.8 \times 10^{-4}\, \mathrm{cts}\,\mathrm{kg}^{-1}\mathrm{yr}^{-1}\mathrm{keV}^{-1}$ above $4\,\mathrm{MeV}$ and find no statistically significant excess over our background projection. Using a total… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.00897v3-abstract-full').style.display = 'inline'; document.getElementById('2207.00897v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.00897v3-abstract-full" style="display: none;"> We present a search for electron-recoil signatures from the charged-current absorption of fermionic dark matter using the EXO-200 detector. We report an average electron recoil background rate of $6.8 \times 10^{-4}\, \mathrm{cts}\,\mathrm{kg}^{-1}\mathrm{yr}^{-1}\mathrm{keV}^{-1}$ above $4\,\mathrm{MeV}$ and find no statistically significant excess over our background projection. Using a total ${}^{136}\mathrm{Xe}$ exposure of $234.1\,\mathrm{kg}\,\mathrm{yr}$ we exclude new parameter space for the charged-current absorption cross-section for dark matter masses between $m_蠂= 2.6\,\mathrm{MeV} - 11.6\,\mathrm{MeV}$ with a minimum of $6\times 10^{-51}\,\mathrm{cm}^2$ at $8.3\,\mathrm{MeV}$ at the $90\%$ confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.00897v3-abstract-full').style.display = 'none'; document.getElementById('2207.00897v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">9 pages, 6 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107, 012007 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.07586">arXiv:2111.07586</a> <span> [<a href="https://arxiv.org/pdf/2111.07586">pdf</a>, <a href="https://arxiv.org/format/2111.07586">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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="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/10.1016/j.ppnp.2022.103947">10.1016/j.ppnp.2022.103947 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Status and Perspectives of Neutrino Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Athar%2C+M+S">M. Sajjad Athar</a>, <a href="/search/hep-ex?searchtype=author&query=Barwick%2C+S+W">Steven W. Barwick</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">Thomas Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+J">Jun Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">Mikhail Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Inoue%2C+K">Kunio Inoue</a>, <a href="/search/hep-ex?searchtype=author&query=Kajita%2C+T">Takaaki Kajita</a>, <a href="/search/hep-ex?searchtype=author&query=Kowalski%2C+M">Marek Kowalski</a>, <a href="/search/hep-ex?searchtype=author&query=Lindner%2C+M">Manfred Lindner</a>, <a href="/search/hep-ex?searchtype=author&query=Long%2C+K+R">Kenneth R. Long</a>, <a href="/search/hep-ex?searchtype=author&query=Palanque-Delabrouille%2C+N">Nathalie Palanque-Delabrouille</a>, <a href="/search/hep-ex?searchtype=author&query=Rodejohann%2C+W">Werner Rodejohann</a>, <a href="/search/hep-ex?searchtype=author&query=Schellman%2C+H">Heidi Schellman</a>, <a href="/search/hep-ex?searchtype=author&query=Scholberg%2C+K">Kate Scholberg</a>, <a href="/search/hep-ex?searchtype=author&query=Seo%2C+S">Seon-Hee Seo</a>, <a href="/search/hep-ex?searchtype=author&query=Smith%2C+N+J+T">Nigel J. T. Smith</a>, <a href="/search/hep-ex?searchtype=author&query=Winter%2C+W">Walter Winter</a>, <a href="/search/hep-ex?searchtype=author&query=Zeller%2C+G+P">Geralyn P. Zeller</a>, <a href="/search/hep-ex?searchtype=author&query=Funchal%2C+R+Z">Renata Zukanovich Funchal</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.07586v1-abstract-short" style="display: inline;"> This review demonstrates the unique role of the neutrino by discussing in detail the physics of and with neutrinos. We deal with neutrino sources, neutrino oscillations, absolute masses, interactions, the possible existence of sterile neutrinos, and theoretical implications. In addition, synergies of neutrino physics with other research fields are found, and requirements to continue successful neu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.07586v1-abstract-full').style.display = 'inline'; document.getElementById('2111.07586v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.07586v1-abstract-full" style="display: none;"> This review demonstrates the unique role of the neutrino by discussing in detail the physics of and with neutrinos. We deal with neutrino sources, neutrino oscillations, absolute masses, interactions, the possible existence of sterile neutrinos, and theoretical implications. In addition, synergies of neutrino physics with other research fields are found, and requirements to continue successful neutrino physics in the future, in terms of technological developments and adequate infrastructures, are stressed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.07586v1-abstract-full').style.display = 'none'; document.getElementById('2111.07586v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">227 pages; this review of the field of neutrino physics emerged from a report written by a panel on the request of IUPAP (International Union of Pure and Applied Physics). The mandate, the panel members and the report can be found on the web page of the panel at ht tps://www.iupapneutrinopanel.org</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.01537">arXiv:2110.01537</a> <span> [<a href="https://arxiv.org/pdf/2110.01537">pdf</a>, <a href="https://arxiv.org/format/2110.01537">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.104.112007">10.1103/PhysRevD.104.112007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Kiloton-scale xenon detectors for neutrinoless double beta decay and other new physics searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Avasthi%2C+A">A. Avasthi</a>, <a href="/search/hep-ex?searchtype=author&query=Bowyer%2C+T+W">T. W. Bowyer</a>, <a href="/search/hep-ex?searchtype=author&query=Bray%2C+C">C. Bray</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Catarineu%2C+N">N. Catarineu</a>, <a href="/search/hep-ex?searchtype=author&query=Church%2C+E">E. Church</a>, <a href="/search/hep-ex?searchtype=author&query=Guenette%2C+R">R. Guenette</a>, <a href="/search/hep-ex?searchtype=author&query=Haselschwardt%2C+S+J">S. J. Haselschwardt</a>, <a href="/search/hep-ex?searchtype=author&query=Hayes%2C+J+C">J. C. Hayes</a>, <a href="/search/hep-ex?searchtype=author&query=Heffner%2C+M">M. Heffner</a>, <a href="/search/hep-ex?searchtype=author&query=Hertel%2C+S+A">S. A. Hertel</a>, <a href="/search/hep-ex?searchtype=author&query=Humble%2C+P+H">P. H. Humble</a>, <a href="/search/hep-ex?searchtype=author&query=Jamil%2C+A">A. Jamil</a>, <a href="/search/hep-ex?searchtype=author&query=Kim%2C+S">S. Kim</a>, <a href="/search/hep-ex?searchtype=author&query=Lang%2C+R+F">R. F. Lang</a>, <a href="/search/hep-ex?searchtype=author&query=Leach%2C+K+G">K. G. Leach</a>, <a href="/search/hep-ex?searchtype=author&query=Lenardo%2C+B+G">B. G. Lenardo</a>, <a href="/search/hep-ex?searchtype=author&query=Lippincott%2C+W+H">W. H. Lippincott</a>, <a href="/search/hep-ex?searchtype=author&query=Marino%2C+A">A. Marino</a>, <a href="/search/hep-ex?searchtype=author&query=McKinsey%2C+D+N">D. N. McKinsey</a>, <a href="/search/hep-ex?searchtype=author&query=Miller%2C+E+H">E. H. Miller</a>, <a href="/search/hep-ex?searchtype=author&query=Moore%2C+D+C">D. C. Moore</a>, <a href="/search/hep-ex?searchtype=author&query=Mong%2C+B">B. Mong</a>, <a href="/search/hep-ex?searchtype=author&query=Monreal%2C+B">B. Monreal</a>, <a href="/search/hep-ex?searchtype=author&query=Monzani%2C+M+E">M. E. Monzani</a> , et al. (9 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="2110.01537v2-abstract-short" style="display: inline;"> Large detectors employing xenon are a leading technology in existing and planned searches for new physics, including searches for neutrinoless double beta decay ($0谓尾尾$) and dark matter. While upcoming detectors will employ target masses of a ton or more, further extending gas or liquid phase Xe detectors to the kton scale would enable extremely sensitive next-generation searches for rare phenomen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01537v2-abstract-full').style.display = 'inline'; document.getElementById('2110.01537v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.01537v2-abstract-full" style="display: none;"> Large detectors employing xenon are a leading technology in existing and planned searches for new physics, including searches for neutrinoless double beta decay ($0谓尾尾$) and dark matter. While upcoming detectors will employ target masses of a ton or more, further extending gas or liquid phase Xe detectors to the kton scale would enable extremely sensitive next-generation searches for rare phenomena. The key challenge to extending this technology to detectors well beyond the ton scale is the acquisition of the Xe itself. We describe the motivation for extending Xe time projection chambers (TPCs) to the kton scale and possible avenues for Xe acquisition that avoid existing supply chains. If acquisition of Xe in the required quantities is successful, kton-scale detectors of this type could enable a new generation of experiments, including searches for $0谓尾尾$ at half-life sensitivities as long as $10^{30}$ yr. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.01537v2-abstract-full').style.display = 'none'; document.getElementById('2110.01537v2-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 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">19 pages, 10 figures; published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 104, 112007 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.01327">arXiv:2109.01327</a> <span> [<a href="https://arxiv.org/pdf/2109.01327">pdf</a>, <a href="https://arxiv.org/format/2109.01327">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.104.112002">10.1103/PhysRevD.104.112002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Majoron-emitting modes of $^{136}$Xe double beta decay with the complete EXO-200 dataset </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolinski%2C+M+J">M. J. Dolinski</a> , et al. (81 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2109.01327v2-abstract-short" style="display: inline;"> A search for Majoron-emitting modes of the neutrinoless double-beta decay of $^{136}$Xe is performed with the full EXO-200 dataset. This dataset consists of a total $^{136}$Xe exposure of 234.1 kg$\cdot$yr, and includes data with detector upgrades that have improved the energy threshold relative to previous searches. A lower limit of T$_{1/2}^{\rm{^{136}Xe}}>$4.3$\cdot$10$^{24}$ yr at 90\% C.L. on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.01327v2-abstract-full').style.display = 'inline'; document.getElementById('2109.01327v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.01327v2-abstract-full" style="display: none;"> A search for Majoron-emitting modes of the neutrinoless double-beta decay of $^{136}$Xe is performed with the full EXO-200 dataset. This dataset consists of a total $^{136}$Xe exposure of 234.1 kg$\cdot$yr, and includes data with detector upgrades that have improved the energy threshold relative to previous searches. A lower limit of T$_{1/2}^{\rm{^{136}Xe}}>$4.3$\cdot$10$^{24}$ yr at 90\% C.L. on the half-life of the spectral index $n=1$ Majoron decay was obtained, a factor of 3.6 more stringent than the previous limit from EXO-200, corresponding to a constraint on the Majoron-neutrino coupling constant of $|\langle g_{ee}^{M}\rangle|$$<(0.4$-$0.9)\cdot10^{-5}$. The lower threshold and the additional data taken resulted in a factor 8.4 improvement for the $n=7$ mode compared to the previous EXO search. This search provides the most stringent limits to-date on the Majoron-emitting decays of $^{136}$Xe with spectral indices $n=1,2,3,$ and 7. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.01327v2-abstract-full').style.display = 'none'; document.getElementById('2109.01327v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.06007">arXiv:2107.06007</a> <span> [<a href="https://arxiv.org/pdf/2107.06007">pdf</a>, <a href="https://arxiv.org/format/2107.06007">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/02/P02015">10.1088/1748-0221/17/02/P02015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The EXO-200 detector, part II: Auxiliary Systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ackerman%2C+N">N. Ackerman</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J">J. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auger%2C+M">M. Auger</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Bartoszek%2C+L">L. Bartoszek</a>, <a href="/search/hep-ex?searchtype=author&query=Baussan%2C+E">E. Baussan</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Conley%2C+R">R. Conley</a>, <a href="/search/hep-ex?searchtype=author&query=Cook%2C+S">S. Cook</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craddock%2C+W">W. Craddock</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Cree%2C+W">W. Cree</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a> , et al. (135 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.06007v3-abstract-short" style="display: inline;"> The EXO-200 experiment searched for neutrinoless double-beta decay of $^{136}$Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liquid xenon in an ultra-low background time projection chamber with ionization and scintillation detection and readout. This paper describes the design and performance of the various support systems necessary for detector op… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.06007v3-abstract-full').style.display = 'inline'; document.getElementById('2107.06007v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.06007v3-abstract-full" style="display: none;"> The EXO-200 experiment searched for neutrinoless double-beta decay of $^{136}$Xe with a single-phase liquid xenon detector. It used an active mass of 110 kg of 80.6%-enriched liquid xenon in an ultra-low background time projection chamber with ionization and scintillation detection and readout. This paper describes the design and performance of the various support systems necessary for detector operation, including cryogenics, xenon handling, and controls. Novel features of the system were driven by the need to protect the thin-walled detector chamber containing the liquid xenon, to achieve high chemical purity of the Xe, and to maintain thermal uniformity across the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.06007v3-abstract-full').style.display = 'none'; document.getElementById('2107.06007v3-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 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Manuscript updated in response to JINST reviewer comments</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.00035">arXiv:2011.00035</a> <span> [<a href="https://arxiv.org/pdf/2011.00035">pdf</a>, <a href="https://arxiv.org/format/2011.00035">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1367-2630/abde33">10.1088/1367-2630/abde33 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> SNEWS 2.0: A Next-Generation SuperNova Early Warning System for Multi-messenger Astronomy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=BenZvi%2C+S+Y">S. Y. BenZvi</a>, <a href="/search/hep-ex?searchtype=author&query=Bobowski%2C+J+S">J. S. Bobowski</a>, <a href="/search/hep-ex?searchtype=author&query=Bonivento%2C+W">W. Bonivento</a>, <a href="/search/hep-ex?searchtype=author&query=Brdar%2C+V">V. Brdar</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Caden%2C+E">E. Caden</a>, <a href="/search/hep-ex?searchtype=author&query=Clark%2C+M">M. Clark</a>, <a href="/search/hep-ex?searchtype=author&query=Coleiro%2C+A">A. Coleiro</a>, <a href="/search/hep-ex?searchtype=author&query=Colomer-Molla%2C+M">M. Colomer-Molla</a>, <a href="/search/hep-ex?searchtype=author&query=Crespo-Anad%C3%B3n%2C+J+I">J. I. Crespo-Anad贸n</a>, <a href="/search/hep-ex?searchtype=author&query=Depoian%2C+A">A. Depoian</a>, <a href="/search/hep-ex?searchtype=author&query=Dornic%2C+D">D. Dornic</a>, <a href="/search/hep-ex?searchtype=author&query=Fischer%2C+V">V. Fischer</a>, <a href="/search/hep-ex?searchtype=author&query=Franco%2C+D">D. Franco</a>, <a href="/search/hep-ex?searchtype=author&query=Fulgione%2C+W">W. Fulgione</a>, <a href="/search/hep-ex?searchtype=author&query=Rosso%2C+A+G">A. Gallo Rosso</a>, <a href="/search/hep-ex?searchtype=author&query=Geske%2C+M">M. Geske</a>, <a href="/search/hep-ex?searchtype=author&query=Griswold%2C+S">S. Griswold</a>, <a href="/search/hep-ex?searchtype=author&query=Gromov%2C+M">M. Gromov</a>, <a href="/search/hep-ex?searchtype=author&query=Haggard%2C+D">D. Haggard</a>, <a href="/search/hep-ex?searchtype=author&query=Habig%2C+A">A. Habig</a>, <a href="/search/hep-ex?searchtype=author&query=Halim%2C+O">O. Halim</a>, <a href="/search/hep-ex?searchtype=author&query=Higuera%2C+A">A. Higuera</a>, <a href="/search/hep-ex?searchtype=author&query=Hill%2C+R">R. Hill</a> , et al. (46 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2011.00035v3-abstract-short" style="display: inline;"> The next core-collapse supernova in the Milky Way or its satellites will represent a once-in-a-generation opportunity to obtain detailed information about the explosion of a star and provide significant scientific insight for a variety of fields because of the extreme conditions found within. Supernovae in our galaxy are not only rare on a human timescale but also happen at unscheduled times, so i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.00035v3-abstract-full').style.display = 'inline'; document.getElementById('2011.00035v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.00035v3-abstract-full" style="display: none;"> The next core-collapse supernova in the Milky Way or its satellites will represent a once-in-a-generation opportunity to obtain detailed information about the explosion of a star and provide significant scientific insight for a variety of fields because of the extreme conditions found within. Supernovae in our galaxy are not only rare on a human timescale but also happen at unscheduled times, so it is crucial to be ready and use all available instruments to capture all possible information from the event. The first indication of a potential stellar explosion will be the arrival of a bright burst of neutrinos. Its observation by multiple detectors worldwide can provide an early warning for the subsequent electromagnetic fireworks, as well as signal to other detectors with significant backgrounds so they can store their recent data. The Supernova Early Warning System (SNEWS) has been operating as a simple coincidence between neutrino experiments in automated mode since 2005. In the current era of multi-messenger astronomy there are new opportunities for SNEWS to optimize sensitivity to science from the next Galactic supernova beyond the simple early alert. This document is the product of a workshop in June 2019 towards design of SNEWS 2.0, an upgraded SNEWS with enhanced capabilities exploiting the unique advantages of prompt neutrino detection to maximize the science gained from such a valuable event. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.00035v3-abstract-full').style.display = 'none'; document.getElementById('2011.00035v3-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 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">66 pages, 11 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> New J. Phys. 23 031201 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.01841">arXiv:1912.01841</a> <span> [<a href="https://arxiv.org/pdf/1912.01841">pdf</a>, <a href="https://arxiv.org/format/1912.01841">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/10.1109/TNS.2020.3035172">10.1109/TNS.2020.3035172 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Reflectance of Silicon Photomultipliers at Vacuum Ultraviolet Wavelengths </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Lv%2C+P">P. Lv</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=Wen%2C+L+J">L. J. Wen</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breur%2C+P+A">P. A. Breur</a>, <a href="/search/hep-ex?searchtype=author&query=Brodsky%2C+J+P">J. P. Brodsky</a>, <a href="/search/hep-ex?searchtype=author&query=Brown%2C+E">E. Brown</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Mamahit%2C+S+B">S. Byrne Mamahit</a>, <a href="/search/hep-ex?searchtype=author&query=Caden%2C+E">E. Caden</a>, <a href="/search/hep-ex?searchtype=author&query=Cao%2C+L">L. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chana%2C+B">B. Chana</a>, <a href="/search/hep-ex?searchtype=author&query=Charlebois%2C+S+A">S. A. Charlebois</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+M">M. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a> , et al. (126 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="1912.01841v1-abstract-short" style="display: inline;"> Characterization of the vacuum ultraviolet (VUV) reflectance of silicon photomultipliers (SiPMs) is important for large-scale SiPM-based photodetector systems. We report the angular dependence of the specular reflectance in a vacuum of SiPMs manufactured by Fondazionc Bruno Kessler (FBK) and Hamamatsu Photonics K.K. (HPK) over wavelengths ranging from 120 nm to 280 nm. Refractive index and extinct… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.01841v1-abstract-full').style.display = 'inline'; document.getElementById('1912.01841v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.01841v1-abstract-full" style="display: none;"> Characterization of the vacuum ultraviolet (VUV) reflectance of silicon photomultipliers (SiPMs) is important for large-scale SiPM-based photodetector systems. We report the angular dependence of the specular reflectance in a vacuum of SiPMs manufactured by Fondazionc Bruno Kessler (FBK) and Hamamatsu Photonics K.K. (HPK) over wavelengths ranging from 120 nm to 280 nm. Refractive index and extinction coefficient of the thin silicon-dioxide film deposited on the surface of the FBK SiPMs are derived from reflectance data of a FBK silicon wafer with the same deposited oxide film as SiPMs. The diffuse reflectance of SiPMs is also measured at 193 nm. We use the VUV spectral dependence of the optical constants to predict the reflectance of the FBK silicon wafer and FBK SiPMs in liquid xenon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.01841v1-abstract-full').style.display = 'none'; document.getElementById('1912.01841v1-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.06438">arXiv:1910.06438</a> <span> [<a href="https://arxiv.org/pdf/1910.06438">pdf</a>, <a href="https://arxiv.org/format/1910.06438">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/01/P01019">10.1088/1748-0221/15/01/P01019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Reflectivity and PDE of VUV4 Hamamatsu SiPMs in Liquid Xenon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Nakarmi%2C+P">P. Nakarmi</a>, <a href="/search/hep-ex?searchtype=author&query=Ostrovskiy%2C+I">I. Ostrovskiy</a>, <a href="/search/hep-ex?searchtype=author&query=Soma%2C+A+K">A. K. Soma</a>, <a href="/search/hep-ex?searchtype=author&query=Retiere%2C+F">F. Retiere</a>, <a href="/search/hep-ex?searchtype=author&query=Kharusi%2C+S+A">S. Al Kharusi</a>, <a href="/search/hep-ex?searchtype=author&query=Alfaris%2C+M">M. Alfaris</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Arnquist%2C+I+J">I. J. Arnquist</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Blatchford%2C+J">J. Blatchford</a>, <a href="/search/hep-ex?searchtype=author&query=Breur%2C+P+A">P. A. Breur</a>, <a href="/search/hep-ex?searchtype=author&query=Brodsky%2C+J+P">J. P. Brodsky</a>, <a href="/search/hep-ex?searchtype=author&query=Brown%2C+E">E. Brown</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Mamahit%2C+S+B">S. Byrne Mamahit</a>, <a href="/search/hep-ex?searchtype=author&query=Caden%2C+E">E. Caden</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=Cao%2C+L">L. Cao</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chana%2C+B">B. Chana</a>, <a href="/search/hep-ex?searchtype=author&query=Charlebois%2C+S+A">S. A. Charlebois</a> , et al. (130 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="1910.06438v2-abstract-short" style="display: inline;"> Understanding reflective properties of materials and photodetection efficiency (PDE) of photodetectors is important for optimizing energy resolution and sensitivity of the next generation neutrinoless double beta decay, direct detection dark matter, and neutrino oscillation experiments that will use noble liquid gases, such as nEXO, DARWIN, DarkSide-20k, and DUNE. Little information is currently a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.06438v2-abstract-full').style.display = 'inline'; document.getElementById('1910.06438v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.06438v2-abstract-full" style="display: none;"> Understanding reflective properties of materials and photodetection efficiency (PDE) of photodetectors is important for optimizing energy resolution and sensitivity of the next generation neutrinoless double beta decay, direct detection dark matter, and neutrino oscillation experiments that will use noble liquid gases, such as nEXO, DARWIN, DarkSide-20k, and DUNE. Little information is currently available about reflectivity and PDE in liquid noble gases, because such measurements are difficult to conduct in a cryogenic environment and at short enough wavelengths. Here we report a measurement of specular reflectivity and relative PDE of Hamamatsu VUV4 silicon photomultipliers (SiPMs) with 50 micrometer micro-cells conducted with xenon scintillation light (~175 nm) in liquid xenon. The specular reflectivity at 15 deg. incidence of three samples of VUV4 SiPMs is found to be 30.4+/-1.4%, 28.6+/-1.3%, and 28.0+/-1.3%, respectively. The PDE at normal incidence differs by +/-8% (standard deviation) among the three devices. The angular dependence of the reflectivity and PDE was also measured for one of the SiPMs. Both the reflectivity and PDE decrease as the angle of incidence increases. This is the first measurement of an angular dependence of PDE and reflectivity of a SiPM in liquid xenon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.06438v2-abstract-full').style.display = 'none'; document.getElementById('1910.06438v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">21 pages, 15 figures, 6 tables. As accepted by JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1908.04128">arXiv:1908.04128</a> <span> [<a href="https://arxiv.org/pdf/1908.04128">pdf</a>, <a href="https://arxiv.org/format/1908.04128">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/10.1103/PhysRevC.101.065501">10.1103/PhysRevC.101.065501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a> , et al. (78 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="1908.04128v2-abstract-short" style="display: inline;"> Liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and ionization yields generated by $纬$ interactions from $^{228}$Th (2615~keV), $^{226}$Ra (1764~keV) and $^{60}$Co (1332~keV and 1173~keV) calibration sources, over a range of electric fields. The $W$-value that defines the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.04128v2-abstract-full').style.display = 'inline'; document.getElementById('1908.04128v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1908.04128v2-abstract-full" style="display: none;"> Liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and ionization yields generated by $纬$ interactions from $^{228}$Th (2615~keV), $^{226}$Ra (1764~keV) and $^{60}$Co (1332~keV and 1173~keV) calibration sources, over a range of electric fields. The $W$-value that defines the recombination-independent energy scale is measured to be $11.5~\pm~0.5$~(syst.)~$\pm~0.1$~(stat.) eV. These data are also used to measure the recombination fluctuations in the number of electrons and photons produced by the calibration sources at the MeV-scale, which deviate from extrapolations of lower-energy data. Additionally, a semi-empirical model for the energy resolution of the detector is developed, which is used to constrain the recombination efficiency, i.e., the fraction of recombined electrons that result in the emission of a detectable photon. Detailed measurements of the absolute charge and light yields for MeV-scale electron recoils are important for predicting the performance of future neutrinoless double beta decay detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1908.04128v2-abstract-full').style.display = 'none'; document.getElementById('1908.04128v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 101, 065501 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.02723">arXiv:1906.02723</a> <span> [<a href="https://arxiv.org/pdf/1906.02723">pdf</a>, <a href="https://arxiv.org/format/1906.02723">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.123.161802">10.1103/PhysRevLett.123.161802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Neutrinoless Double-Beta Decay with the Complete EXO-200 Dataset </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Bhatta%2C+T">T. Bhatta</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Darroch%2C+L">L. Darroch</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolinski%2C+M+J">M. J. Dolinski</a> , et al. (77 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1906.02723v3-abstract-short" style="display: inline;"> A search for neutrinoless double-beta decay ($0谓尾尾$) in $^{136}$Xe is performed with the full EXO-200 dataset using a deep neural network to discriminate between $0谓尾尾$ and background events. Relative to previous analyses, the signal detection efficiency has been raised from 80.8% to 96.4$\pm$3.0% and the energy resolution of the detector at the Q-value of $^{136}$Xe $0谓尾尾$ has been improved from… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.02723v3-abstract-full').style.display = 'inline'; document.getElementById('1906.02723v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.02723v3-abstract-full" style="display: none;"> A search for neutrinoless double-beta decay ($0谓尾尾$) in $^{136}$Xe is performed with the full EXO-200 dataset using a deep neural network to discriminate between $0谓尾尾$ and background events. Relative to previous analyses, the signal detection efficiency has been raised from 80.8% to 96.4$\pm$3.0% and the energy resolution of the detector at the Q-value of $^{136}$Xe $0谓尾尾$ has been improved from $蟽/E=1.23\%$ to $1.15\pm0.02\%$ with the upgraded detector. Accounting for the new data, the median 90% confidence level $0谓尾尾$ half-life sensitivity for this analysis is $5.0 \cdot 10^{25}$ yr with a total $^{136}$Xe exposure of 234.1 kg$\cdot$yr. No statistically significant evidence for $0谓尾尾$ is observed, leading to a lower limit on the $0谓尾尾$ half-life of $3.5\cdot10^{25}$ yr at the 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.02723v3-abstract-full').style.display = 'none'; document.getElementById('1906.02723v3-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 October, 2019; <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">v1, 7 pages, 5 figures; v2, fix references; v3, update to accepted version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 123, 161802 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.09641">arXiv:1804.09641</a> <span> [<a href="https://arxiv.org/pdf/1804.09641">pdf</a>, <a href="https://arxiv.org/format/1804.09641">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 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/10.1088/1748-0221/13/08/P08023">10.1088/1748-0221/13/08/P08023 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Deep Neural Networks for Energy and Position Reconstruction in EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Jewell%2C+M+J">M. J. Jewell</a>, <a href="/search/hep-ex?searchtype=author&query=Ostrovskiy%2C+I">I. Ostrovskiy</a>, <a href="/search/hep-ex?searchtype=author&query=Weber%2C+M">M. Weber</a>, <a href="/search/hep-ex?searchtype=author&query=Ziegler%2C+T">T. Ziegler</a>, <a href="/search/hep-ex?searchtype=author&query=Dalmasson%2C+J">J. Dalmasson</a>, <a href="/search/hep-ex?searchtype=author&query=Kaufman%2C+L+J">L. J. Kaufman</a>, <a href="/search/hep-ex?searchtype=author&query=Richards%2C+T">T. Richards</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Bayerlein%2C+R">R. Bayerlein</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Cree%2C+W">W. Cree</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a> , et al. (69 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="1804.09641v2-abstract-short" style="display: inline;"> We apply deep neural networks (DNN) to data from the EXO-200 experiment. In the studied cases, the DNN is able to reconstruct the relevant parameters - total energy and position - directly from raw digitized waveforms, with minimal exceptions. For the first time, the developed algorithms are evaluated on real detector calibration data. The accuracy of reconstruction either reaches or exceeds what… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.09641v2-abstract-full').style.display = 'inline'; document.getElementById('1804.09641v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.09641v2-abstract-full" style="display: none;"> We apply deep neural networks (DNN) to data from the EXO-200 experiment. In the studied cases, the DNN is able to reconstruct the relevant parameters - total energy and position - directly from raw digitized waveforms, with minimal exceptions. For the first time, the developed algorithms are evaluated on real detector calibration data. The accuracy of reconstruction either reaches or exceeds what was achieved by the conventional approaches developed by EXO-200 over the course of the experiment. Most existing DNN approaches to event reconstruction and classification in particle physics are trained on Monte Carlo simulated events. Such algorithms are inherently limited by the accuracy of the simulation. We describe a unique approach that, in an experiment such as EXO-200, allows to successfully perform certain reconstruction and analysis tasks by training the network on waveforms from experimental data, either reducing or eliminating the reliance on the Monte Carlo. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.09641v2-abstract-full').style.display = 'none'; document.getElementById('1804.09641v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted version. 33 pages, 28 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2018 JINST 13 P08023 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.07670">arXiv:1710.07670</a> <span> [<a href="https://arxiv.org/pdf/1710.07670">pdf</a>, <a href="https://arxiv.org/ps/1710.07670">ps</a>, <a href="https://arxiv.org/format/1710.07670">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.97.072007">10.1103/PhysRevD.97.072007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for nucleon decays with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Bayerlein%2C+R">R. Bayerlein</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Cree%2C+W">W. Cree</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Daughhetee%2C+J">J. Daughhetee</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a> , et al. (70 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.07670v5-abstract-short" style="display: inline;"> A search for instability of nucleons bound in $^{136}$Xe nuclei is reported with 223 kg$\cdot$yr exposure of $^{136}$Xe in the EXO-200 experiment. Lifetime limits of 3.3$\times 10^{23}$ and 1.9$\times 10^{23}$ yrs are established for nucleon decay to $^{133}$Sb and $^{133}$Te, respectively. These are the most stringent to date, exceeding the prior decay limits by a factor of 9 and 7, respectively. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.07670v5-abstract-full" style="display: none;"> A search for instability of nucleons bound in $^{136}$Xe nuclei is reported with 223 kg$\cdot$yr exposure of $^{136}$Xe in the EXO-200 experiment. Lifetime limits of 3.3$\times 10^{23}$ and 1.9$\times 10^{23}$ yrs are established for nucleon decay to $^{133}$Sb and $^{133}$Te, respectively. These are the most stringent to date, exceeding the prior decay limits by a factor of 9 and 7, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.07670v5-abstract-full').style.display = 'none'; document.getElementById('1710.07670v5-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 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 97, 072007 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1707.08707">arXiv:1707.08707</a> <span> [<a href="https://arxiv.org/pdf/1707.08707">pdf</a>, <a href="https://arxiv.org/format/1707.08707">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.120.072701">10.1103/PhysRevLett.120.072701 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Bayerlein%2C+R">R. Bayerlein</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Cree%2C+W">W. Cree</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Daughhetee%2C+J">J. Daughhetee</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</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="1707.08707v2-abstract-short" style="display: inline;"> Results from a search for neutrinoless double-beta decay $0谓尾尾$ of $^{136}$Xe are presented using the first year of data taken with the upgraded EXO-200 detector. Relative to previous searches by EXO-200, the energy resolution of the detector has been improved to $蟽/E$=1.23%, the electric field in the drift region has been raised by 50%, and a system to suppress radon in the volume between the cry… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08707v2-abstract-full').style.display = 'inline'; document.getElementById('1707.08707v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1707.08707v2-abstract-full" style="display: none;"> Results from a search for neutrinoless double-beta decay $0谓尾尾$ of $^{136}$Xe are presented using the first year of data taken with the upgraded EXO-200 detector. Relative to previous searches by EXO-200, the energy resolution of the detector has been improved to $蟽/E$=1.23%, the electric field in the drift region has been raised by 50%, and a system to suppress radon in the volume between the cryostat and lead shielding has been implemented. In addition, analysis techniques that improve topological discrimination between $0谓尾尾$ and background events have been developed. Incorporating these hardware and analysis improvements, the median 90% confidence level $0谓尾尾$ half-life sensitivity after combining with the full data set acquired before the upgrade has increased 2-fold to $3.7 \times 10^{25}$ yr. No statistically significant evidence for $0谓尾尾$ is observed, leading to a lower limit on the $0谓尾尾$ half-life of $1.8\times10^{25}$ yr at the 90% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1707.08707v2-abstract-full').style.display = 'none'; document.getElementById('1707.08707v2-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 July, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures, final version submitted to PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 120, 072701 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1704.05042">arXiv:1704.05042</a> <span> [<a href="https://arxiv.org/pdf/1704.05042">pdf</a>, <a href="https://arxiv.org/format/1704.05042">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.96.092001">10.1103/PhysRevD.96.092001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searches for Double Beta Decay of $^{134}$Xe with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Anton%2C+G">G. Anton</a>, <a href="/search/hep-ex?searchtype=author&query=Badhrees%2C+I">I. Badhrees</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Bayerlein%2C+R">R. Bayerlein</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Cree%2C+W">W. Cree</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Daughhetee%2C+J">J. Daughhetee</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a> , et al. (69 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1704.05042v2-abstract-short" style="display: inline;"> Searches for double beta decay of $^{134}$Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of $^{136}$Xe. Using an exposure of $29.6\text{ kg}\!\cdot\!\text{yr}$, the lower limits of $\text{T}_{1/2}^{2谓尾\!尾}>8.7\cdot10^{20}\text{ yr}$ and $\text{T}_{1/2}^{0谓尾\!尾}>1.1\cdot10^{23}\text{ yr}$ at 90% confidence level were derive… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.05042v2-abstract-full').style.display = 'inline'; document.getElementById('1704.05042v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1704.05042v2-abstract-full" style="display: none;"> Searches for double beta decay of $^{134}$Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of $^{136}$Xe. Using an exposure of $29.6\text{ kg}\!\cdot\!\text{yr}$, the lower limits of $\text{T}_{1/2}^{2谓尾\!尾}>8.7\cdot10^{20}\text{ yr}$ and $\text{T}_{1/2}^{0谓尾\!尾}>1.1\cdot10^{23}\text{ yr}$ at 90% confidence level were derived, with corresponding half-life sensitivities of $1.2\cdot10^{21}\text{ yr}$ and $1.9\cdot10^{23}\text{ yr}$. These limits exceed those in the literature for $^{134}$Xe, improving by factors of nearly $10^{5}$ and 2 for the two antineutrino and neutrinoless modes, respectively. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.05042v2-abstract-full').style.display = 'none'; document.getElementById('1704.05042v2-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 November, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 April, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 96, 092001 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1704.01528">arXiv:1704.01528</a> <span> [<a href="https://arxiv.org/pdf/1704.01528">pdf</a>, <a href="https://arxiv.org/format/1704.01528">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Searching for $0谓尾尾$ decay in $^{136}$Xe -- towards the tonne-scale and beyond </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">Thomas Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Winslow%2C+L">Lindley Winslow</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1704.01528v1-abstract-short" style="display: inline;"> The quest for neutrinoless double-beta decay ($0谓尾尾$) is a promising experimental approach to search for lepton number violation in weak interactions, a key ingredient in generating the matter-antimatter asymmetry through models of Leptogenesis. The $^{136}$Xe-based $0谓尾尾$ experiments KamLAND-Zen and EXO-200 currently set the most stringent limits on this process using two very different technique… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.01528v1-abstract-full').style.display = 'inline'; document.getElementById('1704.01528v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1704.01528v1-abstract-full" style="display: none;"> The quest for neutrinoless double-beta decay ($0谓尾尾$) is a promising experimental approach to search for lepton number violation in weak interactions, a key ingredient in generating the matter-antimatter asymmetry through models of Leptogenesis. The $^{136}$Xe-based $0谓尾尾$ experiments KamLAND-Zen and EXO-200 currently set the most stringent limits on this process using two very different techniques. Each are preparing the next generation experiment, which will search for $0谓尾尾$ in the parameter space corresponding to the inverted hierarchy for neutrino mass. Both of these techniques scale well to larger volumes while incorporating interesting new techniques. We present the status of current and next generation experiments of these collaborations and present two developments with the potential to identify $尾尾$ decay events. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1704.01528v1-abstract-full').style.display = 'none'; document.getElementById('1704.01528v1-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 April, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1609.04467">arXiv:1609.04467</a> <span> [<a href="https://arxiv.org/pdf/1609.04467">pdf</a>, <a href="https://arxiv.org/format/1609.04467">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/10.1103/PhysRevC.95.025502">10.1103/PhysRevC.95.025502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the Drift Velocity and Transverse Diffusion of Electrons in Liquid Xenon with the EXO-200 Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Daughhetee%2C+J">J. Daughhetee</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a> , et al. (63 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1609.04467v2-abstract-short" style="display: inline;"> The EXO-200 Collaboration is searching for neutrinoless double beta decay using a liquid xenon (LXe) time projection chamber. This measurement relies on modeling the transport of charge deposits produced by interactions in the LXe to allow discrimination between signal and background events. Here we present measurements of the transverse diffusion constant and drift velocity of electrons at drift… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.04467v2-abstract-full').style.display = 'inline'; document.getElementById('1609.04467v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1609.04467v2-abstract-full" style="display: none;"> The EXO-200 Collaboration is searching for neutrinoless double beta decay using a liquid xenon (LXe) time projection chamber. This measurement relies on modeling the transport of charge deposits produced by interactions in the LXe to allow discrimination between signal and background events. Here we present measurements of the transverse diffusion constant and drift velocity of electrons at drift fields between 20~V/cm and 615~V/cm using EXO-200 data. At the operating field of 380~V/cm EXO-200 measures a drift velocity of 1.705$_{-0.010}^{+0.014}$~mm/$渭$s and a transverse diffusion coefficient of 55$\pm$4~cm$^2$/s. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.04467v2-abstract-full').style.display = 'none'; document.getElementById('1609.04467v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">9 pages, 7 figures, added minor clarifications recommended by the reviewer on E-field non-uniformities, minor edits to formatting of figures to conform with journal requirements</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.06552">arXiv:1605.06552</a> <span> [<a href="https://arxiv.org/pdf/1605.06552">pdf</a>, <a href="https://arxiv.org/format/1605.06552">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 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/10.1088/1748-0221/11/07/P07015">10.1088/1748-0221/11/07/P07015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An Optimal Energy Estimator to Reduce Correlated Noise for the EXO-200 Light Readout </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Hall%2C+C">C. Hall</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Cen%2C+W+R">W. R. Cen</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a> , et al. (63 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1605.06552v2-abstract-short" style="display: inline;"> The energy resolution of the EXO-200 detector is limited by electronics noise in the measurement of the scintillation response. Here we present a new technique to extract optimal scintillation energy measurements for signals split across multiple channels in the presence of correlated noise. The implementation of these techniques improves the energy resolution of the detector at the neutrinoless d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.06552v2-abstract-full').style.display = 'inline'; document.getElementById('1605.06552v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.06552v2-abstract-full" style="display: none;"> The energy resolution of the EXO-200 detector is limited by electronics noise in the measurement of the scintillation response. Here we present a new technique to extract optimal scintillation energy measurements for signals split across multiple channels in the presence of correlated noise. The implementation of these techniques improves the energy resolution of the detector at the neutrinoless double beta decay Q-value from $\left[1.9641\pm 0.0039\right]\%$ to $\left[1.5820\pm 0.0044\right]\%$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.06552v2-abstract-full').style.display = 'none'; document.getElementById('1605.06552v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">21 pages, 8 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 11 P07015 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.06835">arXiv:1512.06835</a> <span> [<a href="https://arxiv.org/pdf/1512.06835">pdf</a>, <a href="https://arxiv.org/format/1512.06835">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1475-7516/2016/04/029">10.1088/1475-7516/2016/04/029 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Cosmogenic Backgrounds to 0谓尾尾 in EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a> , et al. (63 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1512.06835v2-abstract-short" style="display: inline;"> As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background must be understood and eliminated. With this in mind, cosmogenic backgrounds have been studied with the EXO-200 experiment. Using the EXO-200 TPC, the muon flux (through a flat horizontal surface) underground at the Waste… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.06835v2-abstract-full').style.display = 'inline'; document.getElementById('1512.06835v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.06835v2-abstract-full" style="display: none;"> As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background must be understood and eliminated. With this in mind, cosmogenic backgrounds have been studied with the EXO-200 experiment. Using the EXO-200 TPC, the muon flux (through a flat horizontal surface) underground at the Waste Isolation Pilot Plant (WIPP) has been measured to be 桅 = 4.07 $\pm$ 0.14 (sys) $\pm$ 0.03 (stat) $\times$ $10^{-7}$cm$^{-2}$ s$^{-1}$, with a vertical intensity of $I_{v}$ = 2.97$^{+0.14}_{-0.13}$ (sys) $\pm$ 0.02 (stat) $\times$ $10^{-7}$cm$^{-2}$ s$^{-1}$ sr$^{-1}$. Simulations of muon-induced backgrounds identified several potential cosmogenic radionuclides, though only 137Xe is a significant background for the 136Xe 0谓尾尾 search with EXO-200. Muon-induced neutron backgrounds were measured using 纬-rays from neutron capture on the detector materials. This provided a measurement of 137Xe yield, and a test of the accuracy of the neutron production and transport simulations. The independently measured rates of 136Xe neutron capture and of 137Xe decay agree within uncertainties. Geant4 and FLUKA simulations were performed to estimate neutron capture rates, and these estimates agreed to within ~40% or better with measurements. The ability to identify 136Xe(n,纬) events will allow for rejection of 137Xe backgrounds in future 0谓尾尾 analyses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.06835v2-abstract-full').style.display = 'none'; document.getElementById('1512.06835v2-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 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published in JCAP, 29 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/1511.04770">arXiv:1511.04770</a> <span> [<a href="https://arxiv.org/pdf/1511.04770">pdf</a>, <a href="https://arxiv.org/format/1511.04770">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.93.035501">10.1103/PhysRevC.93.035501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for $2谓尾尾$ decay of $^{136}$Xe to the 0$_1^+$ excited state of $^{136}$Ba with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chaves%2C+J">J. Chaves</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a> , et al. (67 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="1511.04770v2-abstract-short" style="display: inline;"> EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe to the ground state of $^{136}$Ba. We report here on a search for the two-neutrino double-beta decay of $^{136}$Xe to the first $0^+$ excited state, $0^+_1$, of $^{136}$Ba based on a 100 kg$\cdot$yr exposure of $^{136}$Xe. Using a specialized analysis employing a machine learning alg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.04770v2-abstract-full').style.display = 'inline'; document.getElementById('1511.04770v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1511.04770v2-abstract-full" style="display: none;"> EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe to the ground state of $^{136}$Ba. We report here on a search for the two-neutrino double-beta decay of $^{136}$Xe to the first $0^+$ excited state, $0^+_1$, of $^{136}$Ba based on a 100 kg$\cdot$yr exposure of $^{136}$Xe. Using a specialized analysis employing a machine learning algorithm, we obtain a 90% CL half-life sensitivity of $1.7 \times 10^{24}$ yr. We find no statistically significant evidence for the $2谓尾尾$ decay to the excited state resulting in a lower limit of $T^{2谓}_{1/2}$ ($0^+ \rightarrow 0^+_1$) $> 6.9 \times 10^{23}$ yr at 90% CL. This observed limit is consistent with the estimated half-life of $2.5\times10^{25}$ yr. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1511.04770v2-abstract-full').style.display = 'none'; document.getElementById('1511.04770v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 November, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">10 pages, 7 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 93, 035501 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.06241">arXiv:1503.06241</a> <span> [<a href="https://arxiv.org/pdf/1503.06241">pdf</a>, <a href="https://arxiv.org/format/1503.06241">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 class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.92.015503">10.1103/PhysRevC.92.015503 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Investigation of radioactivity-induced backgrounds in EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=Der+Mesrobian-Kabakian%2C+A">A. Der Mesrobian-Kabakian</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dolinski%2C+M+J">M. J. Dolinski</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="1503.06241v2-abstract-short" style="display: inline;"> The search for neutrinoless double-beta decay (0谓尾尾) requires extremely low background and a good understanding of their sources and their influence on the rate in the region of parameter space relevant to the 0谓尾尾 signal. We report on studies of various 尾- and 纬-backgrounds in the liquid- xenon-based EXO-200 0谓尾尾 experiment. With this work we try to better understand the location and strength of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.06241v2-abstract-full').style.display = 'inline'; document.getElementById('1503.06241v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.06241v2-abstract-full" style="display: none;"> The search for neutrinoless double-beta decay (0谓尾尾) requires extremely low background and a good understanding of their sources and their influence on the rate in the region of parameter space relevant to the 0谓尾尾 signal. We report on studies of various 尾- and 纬-backgrounds in the liquid- xenon-based EXO-200 0谓尾尾 experiment. With this work we try to better understand the location and strength of specific background sources and compare the conclusions to radioassay results taken before and during detector construction. Finally, we discuss the implications of these studies for EXO-200 as well as for the next-generation, tonne-scale nEXO detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.06241v2-abstract-full').style.display = 'none'; document.getElementById('1503.06241v2-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 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 7 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 92 015503 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.2624">arXiv:1410.2624</a> <span> [<a href="https://arxiv.org/pdf/1410.2624">pdf</a>, <a href="https://arxiv.org/format/1410.2624">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.91.022505">10.1103/PhysRevA.91.022505 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spectroscopy of Ba and Ba$^+$ deposits in solid xenon for barium tagging in nEXO </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Mong%2C+B">B. Mong</a>, <a href="/search/hep-ex?searchtype=author&query=Cook%2C+S">S. Cook</a>, <a href="/search/hep-ex?searchtype=author&query=Walton%2C+T">T. Walton</a>, <a href="/search/hep-ex?searchtype=author&query=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Hall%2C+K">K. Hall</a>, <a href="/search/hep-ex?searchtype=author&query=Fairbank%2C+W">W. Fairbank Jr.</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Basque%2C+V">V. Basque</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</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=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Didberidze%2C+T">T. Didberidze</a>, <a href="/search/hep-ex?searchtype=author&query=Dilling%2C+J">J. Dilling</a>, <a href="/search/hep-ex?searchtype=author&query=Dolinski%2C+M+J">M. J. Dolinski</a>, <a href="/search/hep-ex?searchtype=author&query=Dunford%2C+M">M. Dunford</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="1410.2624v1-abstract-short" style="display: inline;"> Progress on a method of barium tagging for the nEXO double beta decay experiment is reported. Absorption and emission spectra for deposits of barium atoms and ions in solid xenon matrices are presented. Excitation spectra for prominent emission lines, temperature dependence and bleaching of the fluorescence reveal the existence of different matrix sites. A regular series of sharp lines observed in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.2624v1-abstract-full').style.display = 'inline'; document.getElementById('1410.2624v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.2624v1-abstract-full" style="display: none;"> Progress on a method of barium tagging for the nEXO double beta decay experiment is reported. Absorption and emission spectra for deposits of barium atoms and ions in solid xenon matrices are presented. Excitation spectra for prominent emission lines, temperature dependence and bleaching of the fluorescence reveal the existence of different matrix sites. A regular series of sharp lines observed in Ba$^+$ deposits is identified with some type of barium hydride molecule. Lower limits for the fluorescence quantum efficiency of the principal Ba emission transition are reported. Under current conditions, an image of $\le10^4$ Ba atoms can be obtained. Prospects for imaging single Ba atoms in solid xenon are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.2624v1-abstract-full').style.display = 'none'; document.getElementById('1410.2624v1-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 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1409.6829">arXiv:1409.6829</a> <span> [<a href="https://arxiv.org/pdf/1409.6829">pdf</a>, <a href="https://arxiv.org/ps/1409.6829">ps</a>, <a href="https://arxiv.org/format/1409.6829">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.90.092004">10.1103/PhysRevD.90.092004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Majoron-emitting modes of double-beta decay of $^{136}$Xe with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beauchamp%2C+E">E. Beauchamp</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chaves%2C+J">J. Chaves</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</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="1409.6829v2-abstract-short" style="display: inline;"> EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe. Here we report on a search for various Majoron-emitting modes based on 100 kg$\cdot$yr exposure of $^{136}$Xe. A lower limit of $T^{^{136}Xe}_{1/2} >1.2 \cdot 10^{24}$ yr at 90% C.L. on the half-life of the spectral index = 1 Majoron decay was obtained, corresponding to a constraint… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.6829v2-abstract-full').style.display = 'inline'; document.getElementById('1409.6829v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1409.6829v2-abstract-full" style="display: none;"> EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe. Here we report on a search for various Majoron-emitting modes based on 100 kg$\cdot$yr exposure of $^{136}$Xe. A lower limit of $T^{^{136}Xe}_{1/2} >1.2 \cdot 10^{24}$ yr at 90% C.L. on the half-life of the spectral index = 1 Majoron decay was obtained, corresponding to a constraint on the Majoron-neutrino coupling constant of $|< g^{M}_{ee} >|<$ (0.8-1.7)$\cdot$10$^{-5}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1409.6829v2-abstract-full').style.display = 'none'; document.getElementById('1409.6829v2-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 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published in PRD. Version 2: Referee comments addressed, journal reference added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 90, 092004 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1402.6956">arXiv:1402.6956</a> <span> [<a href="https://arxiv.org/pdf/1402.6956">pdf</a>, <a href="https://arxiv.org/format/1402.6956">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - 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/10.1038/nature13432">10.1038/nature13432 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Majorana neutrinos with the first two years of EXO-200 data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Collaboration%2C+E">EXO-200 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beauchamp%2C+E">E. Beauchamp</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Bonatt%2C+J">J. Bonatt</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chaves%2C+J">J. Chaves</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Coon%2C+M">M. Coon</a>, <a href="/search/hep-ex?searchtype=author&query=Craycraft%2C+A">A. Craycraft</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a> , et al. (70 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1402.6956v2-abstract-short" style="display: inline;"> Many extensions of the Standard Model of particle physics suggest that neutrinos should be Majorana-type fermions, but this assumption is difficult to confirm. Observation of neutrinoless double-beta decay ($0谓尾尾$), a spontaneous transition that may occur in several candidate nuclei, would verify the Majorana nature of the neutrino and constrain the absolute scale of the neutrino mass spectrum. Re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.6956v2-abstract-full').style.display = 'inline'; document.getElementById('1402.6956v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1402.6956v2-abstract-full" style="display: none;"> Many extensions of the Standard Model of particle physics suggest that neutrinos should be Majorana-type fermions, but this assumption is difficult to confirm. Observation of neutrinoless double-beta decay ($0谓尾尾$), a spontaneous transition that may occur in several candidate nuclei, would verify the Majorana nature of the neutrino and constrain the absolute scale of the neutrino mass spectrum. Recent searches carried out with $^{76}$Ge (GERDA experiment) and $^{136}$Xe (KamLAND-Zen and EXO-200 experiments) have established the lifetime of this decay to be longer than $10^{25}$ yr, corresponding to a limit on the neutrino mass of 0.2-0.4 eV. Here we report new results from EXO-200 based on 100 kg$\cdot$yr of $^{136}$Xe exposure, representing an almost fourfold increase from our earlier published datasets. We have improved the detector resolution at the $^{136}$Xe double-beta-decay Q-value to $蟽$/E = 1.53% and revised the data analysis. The obtained half-life sensitivity is $1.9\cdot10^{25}$ yr, an improvement by a factor of 2.7 compared to previous EXO-200 results. We find no statistically significant evidence for $0谓尾尾$ decay and set a half-life limit of $1.1\cdot10^{25}$ yr at 90% CL. The high sensitivity holds promise for further running of the EXO-200 detector and future $0谓尾尾$ decay searches with nEXO. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1402.6956v2-abstract-full').style.display = 'none'; document.getElementById('1402.6956v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 February, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">9 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 510, 229-234 (12 June 2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1306.6106">arXiv:1306.6106</a> <span> [<a href="https://arxiv.org/pdf/1306.6106">pdf</a>, <a href="https://arxiv.org/format/1306.6106">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.89.015502">10.1103/PhysRevC.89.015502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An improved measurement of the 2谓尾尾 half-life of Xe-136 with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Albert%2C+J+B">J. B. Albert</a>, <a href="/search/hep-ex?searchtype=author&query=Auger%2C+M">M. Auger</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beauchamp%2C+E">E. Beauchamp</a>, <a href="/search/hep-ex?searchtype=author&query=Beck%2C+D">D. Beck</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Bonatt%2C+J">J. Bonatt</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</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=Chambers%2C+C">C. Chambers</a>, <a href="/search/hep-ex?searchtype=author&query=Chaves%2C+J">J. Chaves</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Cook%2C+S">S. Cook</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Daugherty%2C+S+J">S. J. Daugherty</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+J">J. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=DeVoe%2C+R">R. DeVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dobi%2C+A">A. Dobi</a> , et al. (72 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1306.6106v4-abstract-short" style="display: inline;"> We report on an improved measurement of the 2谓尾尾 half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data analysis methods used for double-beta decay searches with EXO-200, while emphasizing those… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.6106v4-abstract-full').style.display = 'inline'; document.getElementById('1306.6106v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1306.6106v4-abstract-full" style="display: none;"> We report on an improved measurement of the 2谓尾尾 half-life of Xe-136 performed by EXO-200. The use of a large and homogeneous time projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data analysis methods used for double-beta decay searches with EXO-200, while emphasizing those directly related to the present measurement. The Xe-136 2谓尾尾 half-life is found to be 2.165 +- 0.016 (stat) +- 0.059 (sys) x 10^21 years. This is the most precisely measured half-life of any 2谓尾尾 decay to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.6106v4-abstract-full').style.display = 'none'; document.getElementById('1306.6106v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 January, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 June, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">34 pages, 32 figures, Updated to published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 89, 015502 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1205.5608">arXiv:1205.5608</a> <span> [<a href="https://arxiv.org/pdf/1205.5608">pdf</a>, <a href="https://arxiv.org/ps/1205.5608">ps</a>, <a href="https://arxiv.org/format/1205.5608">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.109.032505">10.1103/PhysRevLett.109.032505 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Neutrinoless Double-Beta Decay in $^{136}$Xe with EXO-200 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Auger%2C+M">M. Auger</a>, <a href="/search/hep-ex?searchtype=author&query=Auty%2C+D+J">D. J. Auty</a>, <a href="/search/hep-ex?searchtype=author&query=Barbeau%2C+P+S">P. S. Barbeau</a>, <a href="/search/hep-ex?searchtype=author&query=Beauchamp%2C+E">E. Beauchamp</a>, <a href="/search/hep-ex?searchtype=author&query=Belov%2C+V">V. Belov</a>, <a href="/search/hep-ex?searchtype=author&query=Benitez-Medina%2C+C">C. Benitez-Medina</a>, <a href="/search/hep-ex?searchtype=author&query=Breidenbach%2C+M">M. Breidenbach</a>, <a href="/search/hep-ex?searchtype=author&query=Brunner%2C+T">T. Brunner</a>, <a href="/search/hep-ex?searchtype=author&query=Burenkov%2C+A">A. Burenkov</a>, <a href="/search/hep-ex?searchtype=author&query=Cleveland%2C+B">B. Cleveland</a>, <a href="/search/hep-ex?searchtype=author&query=Cook%2C+S">S. Cook</a>, <a href="/search/hep-ex?searchtype=author&query=Daniels%2C+T">T. Daniels</a>, <a href="/search/hep-ex?searchtype=author&query=Danilov%2C+M">M. Danilov</a>, <a href="/search/hep-ex?searchtype=author&query=Davis%2C+C+G">C. G. Davis</a>, <a href="/search/hep-ex?searchtype=author&query=Delaquis%2C+S">S. Delaquis</a>, <a href="/search/hep-ex?searchtype=author&query=deVoe%2C+R">R. deVoe</a>, <a href="/search/hep-ex?searchtype=author&query=Dobi%2C+A">A. Dobi</a>, <a href="/search/hep-ex?searchtype=author&query=Dolinski%2C+M+J">M. J. Dolinski</a>, <a href="/search/hep-ex?searchtype=author&query=Dolgolenko%2C+A">A. Dolgolenko</a>, <a href="/search/hep-ex?searchtype=author&query=Dunford%2C+M">M. Dunford</a>, <a href="/search/hep-ex?searchtype=author&query=Fairbank%2C+W">W. Fairbank Jr.</a>, <a href="/search/hep-ex?searchtype=author&query=Farine%2C+J">J. Farine</a>, <a href="/search/hep-ex?searchtype=author&query=Feldmeier%2C+W">W. Feldmeier</a>, <a href="/search/hep-ex?searchtype=author&query=Fierlinger%2C+P">P. Fierlinger</a>, <a href="/search/hep-ex?searchtype=author&query=Franco%2C+D">D. Franco</a> , et al. (53 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="1205.5608v2-abstract-short" style="display: inline;"> We report on a search for neutrinoless double-beta decay of $^{136}$Xe with EXO-200. No signal is observed for an exposure of 32.5 kg-yr, with a background of ~1.5 x 10^{-3} /(kg yr keV) in the $\pm 1蟽$ region of interest. This sets a lower limit on the half-life of the neutrinoless double-beta decay $T_{1/2}^{0谓尾尾}$($^{136}$Xe) > 1.6 x 10$^{25}$ yr (90% CL), corresponding to effective Majorana ma… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.5608v2-abstract-full').style.display = 'inline'; document.getElementById('1205.5608v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1205.5608v2-abstract-full" style="display: none;"> We report on a search for neutrinoless double-beta decay of $^{136}$Xe with EXO-200. No signal is observed for an exposure of 32.5 kg-yr, with a background of ~1.5 x 10^{-3} /(kg yr keV) in the $\pm 1蟽$ region of interest. This sets a lower limit on the half-life of the neutrinoless double-beta decay $T_{1/2}^{0谓尾尾}$($^{136}$Xe) > 1.6 x 10$^{25}$ yr (90% CL), corresponding to effective Majorana masses of less than 140-380 meV, depending on the matrix element calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1205.5608v2-abstract-full').style.display = 'none'; document.getElementById('1205.5608v2-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 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 May, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 109, 032505 (2012) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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