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is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.00746">arXiv:2501.00746</a> <span> [<a href="https://arxiv.org/pdf/2501.00746">pdf</a>, <a href="https://arxiv.org/format/2501.00746">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> <p class="title is-5 mathjax"> Comprehensive Measurement of the Reactor Antineutrino Spectrum and Flux at Daya Bay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=An%2C+F+P">F. P. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+W+D">W. D. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bishai%2C+M">M. Bishai</a>, <a href="/search/nucl-ex?searchtype=author&query=Blyth%2C+S">S. Blyth</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+J">J. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+J+F">J. F. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+Y">Y. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+H+S">H. S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+H+Y">H. Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S+M">S. M. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+X">Y. X. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Z+Y">Z. Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Y+-">Y. -C. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z+K">Z. K. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cherwinka%2C+J+J">J. J. Cherwinka</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+M+C">M. C. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Cummings%2C+J+P">J. P. Cummings</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalager%2C+O">O. Dalager</a>, <a href="/search/nucl-ex?searchtype=author&query=Deng%2C+F+S">F. S. Deng</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+X+Y">X. Y. Ding</a> , et al. (177 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2501.00746v1-abstract-short" style="display: inline;"> This Letter reports the precise measurement of reactor antineutrino spectrum and flux based on the full data set of 4.7 million inverse-beta-decay (IBD) candidates collected at Daya Bay near detectors. Expressed in terms of the IBD yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ isotopes are measured with 1.3… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.00746v1-abstract-full').style.display = 'inline'; document.getElementById('2501.00746v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.00746v1-abstract-full" style="display: none;"> This Letter reports the precise measurement of reactor antineutrino spectrum and flux based on the full data set of 4.7 million inverse-beta-decay (IBD) candidates collected at Daya Bay near detectors. Expressed in terms of the IBD yield per fission, the antineutrino spectra from all reactor fissile isotopes and the specific $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ isotopes are measured with 1.3$\%$, 3$\%$ and 8$\%$ uncertainties respectively near the 3 MeV spectrum peak in reconstructed energy, reaching the best precision in the world. The total antineutrino flux and isotopic $\mathrm{^{235}U}$ and $\mathrm{^{239}Pu}$ fluxes are precisely measured to be $5.84\pm0.07$, $6.16\pm0.12$ and $4.16\pm0.21$ in units of $10^{-43} \mathrm{cm^2/fission}$. These measurements are compared with the Huber-Mueller (HM) model, the reevaluated conversion model based on the Kurchatov Institute (KI) measurement and the latest Summation Model (SM2023). The Daya Bay flux shows good consistency with KI and SM2023 models, but disagrees with HM model. The Daya Bay spectrum, however, disagrees with all model predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.00746v1-abstract-full').style.display = 'none'; document.getElementById('2501.00746v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.13515">arXiv:2410.13515</a> <span> [<a href="https://arxiv.org/pdf/2410.13515">pdf</a>, <a href="https://arxiv.org/format/2410.13515">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Lattice">hep-lat</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/10.1038/s41467-024-55042-y">10.1038/s41467-024-55042-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a rare beta decay of the charmed baryon with a Graph Neural Network </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/nucl-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/nucl-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/nucl-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (637 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.13515v2-abstract-short" style="display: inline;"> The beta decay of the lightest charmed baryon $螞_c^+$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics and constraining the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents the first observation of the Cabibbo-suppressed decay… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v2-abstract-full').style.display = 'inline'; document.getElementById('2410.13515v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.13515v2-abstract-full" style="display: none;"> The beta decay of the lightest charmed baryon $螞_c^+$ provides unique insights into the fundamental mechanism of strong and electro-weak interactions, serving as a testbed for investigating non-perturbative quantum chromodynamics and constraining the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameters. This article presents the first observation of the Cabibbo-suppressed decay $螞_c^+ \rightarrow n e^+ 谓_{e}$, utilizing $4.5~\mathrm{fb}^{-1}$ of electron-positron annihilation data collected with the BESIII detector. A novel Graph Neural Network based technique effectively separates signals from dominant backgrounds, notably $螞_c^+ \rightarrow 螞e^+ 谓_{e}$, achieving a statistical significance exceeding $10蟽$. The absolute branching fraction is measured to be $(3.57\pm0.34_{\mathrm{stat.}}\pm0.14_{\mathrm{syst.}})\times 10^{-3}$. For the first time, the CKM matrix element $\left|V_{cd}\right|$ is extracted via a charmed baryon decay as $0.208\pm0.011_{\rm exp.}\pm0.007_{\rm LQCD}\pm0.001_{蟿_{螞_c^+}}$. This work highlights a new approach to further understand fundamental interactions in the charmed baryon sector, and showcases the power of modern machine learning techniques in experimental high-energy physics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.13515v2-abstract-full').style.display = 'none'; document.getElementById('2410.13515v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">27 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature Commun. 16, 681 (2025) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.07914">arXiv:2410.07914</a> <span> [<a href="https://arxiv.org/pdf/2410.07914">pdf</a>, <a href="https://arxiv.org/format/2410.07914">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Generating a highly uniform magnetic field inside the magnetically shielded room of the n2EDM experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/nucl-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouillaud%2C+T">T. Bouillaud</a>, <a href="/search/nucl-ex?searchtype=author&query=Bowles%2C+D+C">D. C. Bowles</a>, <a href="/search/nucl-ex?searchtype=author&query=Caratsch%2C+G+L">G. L. Caratsch</a>, <a href="/search/nucl-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">W. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Crawford%2C+C">C. Crawford</a>, <a href="/search/nucl-ex?searchtype=author&query=Dechenaux%2C+B">B. Dechenaux</a>, <a href="/search/nucl-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/nucl-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/nucl-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/nucl-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/nucl-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/nucl-ex?searchtype=author&query=Goupilli%C3%A8re%2C+D">D. Goupilli猫re</a>, <a href="/search/nucl-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/nucl-ex?searchtype=author&query=H%C3%B6hl%2C+D">D. H枚hl</a>, <a href="/search/nucl-ex?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/nucl-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a> , et al. (41 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.07914v2-abstract-short" style="display: inline;"> We present a coil system designed to generate a highly uniform magnetic field for the n2EDM experiment at the Paul Scherrer Institute. It consists of a main $B_0$ coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273 cm, inside a large magnetically shielded room (MSR). We have assembled this system and characerized its performances with a mapping robot. The appar… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07914v2-abstract-full').style.display = 'inline'; document.getElementById('2410.07914v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.07914v2-abstract-full" style="display: none;"> We present a coil system designed to generate a highly uniform magnetic field for the n2EDM experiment at the Paul Scherrer Institute. It consists of a main $B_0$ coil and a set of auxiliary coils mounted on a cubic structure with a side length of 273 cm, inside a large magnetically shielded room (MSR). We have assembled this system and characerized its performances with a mapping robot. The apparatus is able to generate a 1 $渭$ T vertical field with a relative root mean square deviation $蟽$ ($B_z$)/$B_z$ = 3 $\times$ $10^{-5}$ over the volume of interest, a cylinder of radius 40 cm and height 30 cm. This level of uniformity overcomes the n2EDM requirements, allowing a measurement of the neutron Electric Dipole Moment with a sensitivity better than 1 $\times$ $10^{-27}$ ecm. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.07914v2-abstract-full').style.display = 'none'; document.getElementById('2410.07914v2-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 February, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages, 13 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.16370">arXiv:2409.16370</a> <span> [<a href="https://arxiv.org/pdf/2409.16370">pdf</a>, <a href="https://arxiv.org/format/2409.16370">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> </div> </div> <p class="title is-5 mathjax"> Quasielastic $\overrightarrow{^{3}\mathrm{He}}(\overrightarrow{e},{e'})$ Asymmetry in the Threshold Region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Nycz%2C+M">M. Nycz</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bane%2C+J">J. Bane</a>, <a href="/search/nucl-ex?searchtype=author&query=Barcus%2C+S">S. Barcus</a>, <a href="/search/nucl-ex?searchtype=author&query=Benesch%2C+J">J. Benesch</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhatt%2C+H">H. Bhatt</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhetuwal%2C+D">D. Bhetuwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Cates%2C+G">G. Cates</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">J-P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">J. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+M">M. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cotton%2C+C">C. Cotton</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalton%2C+M">M-M. Dalton</a>, <a href="/search/nucl-ex?searchtype=author&query=Deltuva%2C+A">A. Deltuva</a>, <a href="/search/nucl-ex?searchtype=author&query=Deur%2C+A">A. Deur</a>, <a href="/search/nucl-ex?searchtype=author&query=Dhital%2C+B">B. Dhital</a>, <a href="/search/nucl-ex?searchtype=author&query=Duran%2C+B">B. Duran</a>, <a href="/search/nucl-ex?searchtype=author&query=Dusa%2C+S+C">S. C. Dusa</a>, <a href="/search/nucl-ex?searchtype=author&query=Fernando%2C+I">I. Fernando</a>, <a href="/search/nucl-ex?searchtype=author&query=Fuchey%2C+E">E. Fuchey</a> , et al. (75 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.16370v1-abstract-short" style="display: inline;"> A measurement of the double-spin asymmetry from electron-$^{3}$He scattering in the threshold region of two- and three-body breakup of $^{3}$He was performed at Jefferson Lab, for Q$^{2}$ values of 0.1 and 0.2 (GeV/$c$)$^{2}$. The results of this measurement serve as a stringent test of our understanding of few-body systems. When compared with calculations from plane wave impulse approximation and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16370v1-abstract-full').style.display = 'inline'; document.getElementById('2409.16370v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.16370v1-abstract-full" style="display: none;"> A measurement of the double-spin asymmetry from electron-$^{3}$He scattering in the threshold region of two- and three-body breakup of $^{3}$He was performed at Jefferson Lab, for Q$^{2}$ values of 0.1 and 0.2 (GeV/$c$)$^{2}$. The results of this measurement serve as a stringent test of our understanding of few-body systems. When compared with calculations from plane wave impulse approximation and Faddeev theory, we found that the Faddeev calculations, which use modern nuclear potentials and prescriptions for meson-exchange currents, demonstrate an overall good agreement with data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.16370v1-abstract-full').style.display = 'none'; document.getElementById('2409.16370v1-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.03750">arXiv:2409.03750</a> <span> [<a href="https://arxiv.org/pdf/2409.03750">pdf</a>, <a href="https://arxiv.org/format/2409.03750">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="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/10.1140/epja/s10050-024-01391-7">10.1140/epja/s10050-024-01391-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Pion electroproduction measurements in the nucleon resonance region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Sparveris%2C+N">N. Sparveris</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+M+K">M. K. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">M. Paolone</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+M">M. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+-">J. -P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Duran%2C+B">B. Duran</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Hansen%2C+O">O. Hansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauenstein%2C+F">F. Hauenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Heinrich%2C+N">N. Heinrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Henry%2C+W">W. Henry</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">T. Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Huber%2C+G+M">G. M. Huber</a>, <a href="/search/nucl-ex?searchtype=author&query=Jia%2C+S">S. Jia</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+S">S. Joosten</a> , et al. (24 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.03750v1-abstract-short" style="display: inline;"> We report new pion electroproduction measurements in the $螖(1232)$ resonance, utilizing the SHMS - HMS magnetic spectrometers of Hall C at Jefferson Lab. The data focus on a region that exhibits a strong and rapidly changing interplay of the mesonic cloud and quark-gluon dynamics in the nucleon. The results are in reasonable agreement with models that employ pion cloud effects and chiral effective… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03750v1-abstract-full').style.display = 'inline'; document.getElementById('2409.03750v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.03750v1-abstract-full" style="display: none;"> We report new pion electroproduction measurements in the $螖(1232)$ resonance, utilizing the SHMS - HMS magnetic spectrometers of Hall C at Jefferson Lab. The data focus on a region that exhibits a strong and rapidly changing interplay of the mesonic cloud and quark-gluon dynamics in the nucleon. The results are in reasonable agreement with models that employ pion cloud effects and chiral effective field theory calculations, but at the same time they suggest that an improvement is required to the theoretical calculations and provide valuable input that will allow their refinements. The data illustrate the potential of the magnetic spectrometers setup in Hall C towards the study the $螖(1232)$ resonance. These first reported results will be followed by a series of measurements in Hall C, that will expand the studies of the $螖(1232)$ resonance offering a high precision insight within a wide kinematic range from low to high momentum transfers. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.03750v1-abstract-full').style.display = 'none'; document.getElementById('2409.03750v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.16880">arXiv:2408.16880</a> <span> [<a href="https://arxiv.org/pdf/2408.16880">pdf</a>, <a href="https://arxiv.org/format/2408.16880">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-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/PhysRevAccelBeams.27.084802">10.1103/PhysRevAccelBeams.27.084802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Continuous Electron Beam Accelerator Facility at 12 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adderley%2C+P+A">P. A. Adderley</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Allison%2C+T">T. Allison</a>, <a href="/search/nucl-ex?searchtype=author&query=Bachimanchi%2C+R">R. Bachimanchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Baggett%2C+K">K. Baggett</a>, <a href="/search/nucl-ex?searchtype=author&query=BastaniNejad%2C+M">M. BastaniNejad</a>, <a href="/search/nucl-ex?searchtype=author&query=Bevins%2C+B">B. Bevins</a>, <a href="/search/nucl-ex?searchtype=author&query=Bevins%2C+M">M. Bevins</a>, <a href="/search/nucl-ex?searchtype=author&query=Bickley%2C+M">M. Bickley</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodenstein%2C+R+M">R. M. Bodenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Bogacz%2C+S+A">S. A. Bogacz</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruker%2C+M">M. Bruker</a>, <a href="/search/nucl-ex?searchtype=author&query=Burrill%2C+A">A. Burrill</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardman%2C+L">L. Cardman</a>, <a href="/search/nucl-ex?searchtype=author&query=Creel%2C+J">J. Creel</a>, <a href="/search/nucl-ex?searchtype=author&query=Chao%2C+Y+-">Y. -C. Chao</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+G">G. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciovati%2C+G">G. Ciovati</a>, <a href="/search/nucl-ex?searchtype=author&query=Chattopadhyay%2C+S">S. Chattopadhyay</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+J">J. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Clemens%2C+W+A">W. A. Clemens</a>, <a href="/search/nucl-ex?searchtype=author&query=Croke%2C+G">G. Croke</a>, <a href="/search/nucl-ex?searchtype=author&query=Daly%2C+E">E. Daly</a>, <a href="/search/nucl-ex?searchtype=author&query=Davis%2C+G+K">G. K. Davis</a>, <a href="/search/nucl-ex?searchtype=author&query=Delayen%2C+J">J. Delayen</a> , et al. (114 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.16880v1-abstract-short" style="display: inline;"> This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing eighty-eight superconducting cavities that have operated CW at an average accelerating gradient of 20 MV/m. After reviewing the attributes and performance of the previous 6 GeV CEBAF accelerator, we discuss the upgrad… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16880v1-abstract-full').style.display = 'inline'; document.getElementById('2408.16880v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.16880v1-abstract-full" style="display: none;"> This review paper describes the energy-upgraded CEBAF accelerator. This superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing eighty-eight superconducting cavities that have operated CW at an average accelerating gradient of 20 MV/m. After reviewing the attributes and performance of the previous 6 GeV CEBAF accelerator, we discuss the upgraded CEBAF accelerator system in detail with particular attention paid to the new beam acceleration systems. In addition to doubling the acceleration in each linac, the upgrade included improving the beam recirculation magnets, adding more helium cooling capacity to allow the newly installed modules to run cold, adding a new experimental hall, and improving numerous other accelerator components. We review several of the techniques deployed to operate and analyze the accelerator performance, and document system operating experience and performance. In the final portion of the document, we present much of the current planning regarding projects to improve accelerator performance and enhance operating margins, and our plans for ensuring CEBAF operates reliably into the future. For the benefit of potential users of CEBAF, the performance and quality measures for beam delivered to each of the experimental halls is summarized in the appendix. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.16880v1-abstract-full').style.display = 'none'; document.getElementById('2408.16880v1-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 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">66 pages, 73 figures, 21 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-ACC-23-3940 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Accel. Beams 27 (2024) 084802 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.20490">arXiv:2405.20490</a> <span> [<a href="https://arxiv.org/pdf/2405.20490">pdf</a>, <a href="https://arxiv.org/ps/2405.20490">ps</a>, <a href="https://arxiv.org/format/2405.20490">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> </div> </div> <p class="title is-5 mathjax"> Simultaneous impacts of nuclear shell structure and collectivity on $尾$-decay: evidence from $^{80}$Ga$_{49}$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Verney%2C+D">D. Verney</a>, <a href="/search/nucl-ex?searchtype=author&query=De+Gregorio%2C+G">G. De Gregorio</a>, <a href="/search/nucl-ex?searchtype=author&query=Mancino%2C+R">R. Mancino</a>, <a href="/search/nucl-ex?searchtype=author&query=Matea%2C+I">I. Matea</a>, <a href="/search/nucl-ex?searchtype=author&query=Coraggio%2C+L">L. Coraggio</a>, <a href="/search/nucl-ex?searchtype=author&query=Itaco.%2C+N">N. Itaco.</a>, <a href="/search/nucl-ex?searchtype=author&query=Harakeh%2C+M+N">M. N. Harakeh</a>, <a href="/search/nucl-ex?searchtype=author&query=Delafosse%2C+C">C. Delafosse</a>, <a href="/search/nucl-ex?searchtype=author&query=Didierjean%2C+F">F. Didierjean</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayoubi%2C+L+A">L. A. Ayoubi</a>, <a href="/search/nucl-ex?searchtype=author&query=Falou%2C+H+A">H. Al Falou</a>, <a href="/search/nucl-ex?searchtype=author&query=Benzoni%2C+G">G. Benzoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Blanc%2C+F+L">F. Le Blanc</a>, <a href="/search/nucl-ex?searchtype=author&query=Bozkurt%2C+V">V. Bozkurt</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciema%C5%82a%2C+M">M. Ciema艂a</a>, <a href="/search/nucl-ex?searchtype=author&query=Deloncle%2C+I">I. Deloncle</a>, <a href="/search/nucl-ex?searchtype=author&query=Fallot%2C+M">M. Fallot</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaulard%2C+C">C. Gaulard</a>, <a href="/search/nucl-ex?searchtype=author&query=Gottardo%2C+A">A. Gottardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guadilla%2C+V">V. Guadilla</a>, <a href="/search/nucl-ex?searchtype=author&query=Guillot%2C+J">J. Guillot</a>, <a href="/search/nucl-ex?searchtype=author&query=Hady%C5%84ska-Kl%C4%99k%2C+K">K. Hady艅ska-Kl臋k</a>, <a href="/search/nucl-ex?searchtype=author&query=Ibrahim%2C+F">F. Ibrahim</a>, <a href="/search/nucl-ex?searchtype=author&query=Jovancevic%2C+N">N. Jovancevic</a> , et al. (10 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="2405.20490v1-abstract-short" style="display: inline;"> The Gamow-Teller strength distribution covering the entire $尾$-decay window, up to 10.312(4) MeV, of $^{80g+m}$Ga was measured for the first time in photo-fission of UC$_x$ induced by 50 MeV electron beam. The new data show significant enhancement in the high-energy region with a jump-structure. Simultaneously, the $纬$ de-exciting behavior of $尾$-populated states presents a competition between de-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.20490v1-abstract-full').style.display = 'inline'; document.getElementById('2405.20490v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.20490v1-abstract-full" style="display: none;"> The Gamow-Teller strength distribution covering the entire $尾$-decay window, up to 10.312(4) MeV, of $^{80g+m}$Ga was measured for the first time in photo-fission of UC$_x$ induced by 50 MeV electron beam. The new data show significant enhancement in the high-energy region with a jump-structure. Simultaneously, the $纬$ de-exciting behavior of $尾$-populated states presents a competition between de-excitation to 2$_1^+$ [$尾_2$ = 0.155(9)] and to 2$_2^+$ [$尾_2$ = 0.053$_{0.009}^{0.008}$)] in $^{80}$Ge. Based on these facts and combined with a realistic shell model calculation and systematic analysis of logft ratio between precursor $尾$-decay to 2$_2^+$ and to 2$_1^+$ of Ga isotopes, we conclude that these phenomena evidence simultaneous impacts of nuclear shell structure and collectivity on B(GT) and its distribution and, therefore, the half-life of the precursor. These data prove that the nucleus as a multi-nucleon correlated quantum system reacts as a whole when $尾$-decay occurs in contrast to simple single-particle excitation. Additionally, the comparison with the theoretical results evidence how challenging is the description of the experimental data obtained, and render this experimental outcome a sound test for the theoretical models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.20490v1-abstract-full').style.display = 'none'; document.getElementById('2405.20490v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.05383">arXiv:2402.05383</a> <span> [<a href="https://arxiv.org/pdf/2402.05383">pdf</a>, <a href="https://arxiv.org/format/2402.05383">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> <p class="title is-5 mathjax"> First measurement of the yield of $^8$He isotopes produced in liquid scintillator by cosmic-ray muons at Daya Bay </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Daya+Bay+Collaboration"> Daya Bay Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+F+P">F. P. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+W+D">W. D. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bishai%2C+M">M. Bishai</a>, <a href="/search/nucl-ex?searchtype=author&query=Blyth%2C+S">S. Blyth</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+J">J. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+J+F">J. F. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+Y">Y. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+H+S">H. S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+H+Y">H. Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S+M">S. M. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+X">Y. X. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Z+Y">Z. Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Y+C">Y. C. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z+K">Z. K. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cherwinka%2C+J+J">J. J. Cherwinka</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+M+C">M. C. Chu</a>, <a href="/search/nucl-ex?searchtype=author&query=Cummings%2C+J+P">J. P. Cummings</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalager%2C+O">O. Dalager</a>, <a href="/search/nucl-ex?searchtype=author&query=Deng%2C+F+S">F. S. Deng</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+X+Y">X. Y. Ding</a> , et al. (177 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2402.05383v1-abstract-short" style="display: inline;"> Daya Bay presents the first measurement of cosmogenic $^8$He isotope production in liquid scintillator, using an innovative method for identifying cascade decays of $^8$He and its child isotope, $^8$Li. We also measure the production yield of $^9$Li isotopes using well-established methodology. The results, in units of 10$^{-8}渭^{-1}$g$^{-1}$cm$^{2}$, are 0.307$\pm$0.042, 0.341$\pm$0.040, and 0.546… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.05383v1-abstract-full').style.display = 'inline'; document.getElementById('2402.05383v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.05383v1-abstract-full" style="display: none;"> Daya Bay presents the first measurement of cosmogenic $^8$He isotope production in liquid scintillator, using an innovative method for identifying cascade decays of $^8$He and its child isotope, $^8$Li. We also measure the production yield of $^9$Li isotopes using well-established methodology. The results, in units of 10$^{-8}渭^{-1}$g$^{-1}$cm$^{2}$, are 0.307$\pm$0.042, 0.341$\pm$0.040, and 0.546$\pm$0.076 for $^8$He, and 6.73$\pm$0.73, 6.75$\pm$0.70, and 13.74$\pm$0.82 for $^9$Li at average muon energies of 63.9~GeV, 64.7~GeV, and 143.0~GeV, respectively. The measured production rate of $^8$He isotopes is more than an order of magnitude lower than any other measurement of cosmogenic isotope production. It replaces the results of previous attempts to determine the ratio of $^8$He to $^9$Li production that yielded a wide range of limits from 0 to 30\%. The results provide future liquid-scintillator-based experiments with improved ability to predict cosmogenic backgrounds. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.05383v1-abstract-full').style.display = 'none'; document.getElementById('2402.05383v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.09012">arXiv:2401.09012</a> <span> [<a href="https://arxiv.org/pdf/2401.09012">pdf</a>, <a href="https://arxiv.org/format/2401.09012">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> <p class="title is-5 mathjax"> First study of antihyperon-nucleon scattering $\bar螞p\rightarrow\bar螞p$ and measurement of $螞p\rightarrow螞p$ cross section </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/nucl-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/nucl-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/nucl-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (634 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="2401.09012v2-abstract-short" style="display: inline;"> Using $(10.087\pm0.044)\times10^{9}$ $J/蠄$ events collected with the BESIII detector at the BEPCII storage ring, the processes $螞p\rightarrow螞p$ and $\bar螞p\rightarrow\bar螞p$ are studied, where the $螞/\bar螞$ baryons are produced in the process $J/蠄\rightarrow螞\bar螞$ and the protons are the hydrogen nuclei in the cooling oil of the beam pipe. Clear signals are observed for the two reactions. The cr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.09012v2-abstract-full').style.display = 'inline'; document.getElementById('2401.09012v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.09012v2-abstract-full" style="display: none;"> Using $(10.087\pm0.044)\times10^{9}$ $J/蠄$ events collected with the BESIII detector at the BEPCII storage ring, the processes $螞p\rightarrow螞p$ and $\bar螞p\rightarrow\bar螞p$ are studied, where the $螞/\bar螞$ baryons are produced in the process $J/蠄\rightarrow螞\bar螞$ and the protons are the hydrogen nuclei in the cooling oil of the beam pipe. Clear signals are observed for the two reactions. The cross sections in $-0.9\leq\rm{cos}胃_{螞/\bar螞}\leq0.9$ are measured to be $蟽(螞p\rightarrow螞p)=(12.2\pm1.6_{\rm{stat}}\pm1.1_{\rm{sys}})$ mb and $蟽(\bar螞 p\rightarrow\bar螞 p)=(17.5\pm2.1_{\rm{stat}}\pm1.6_{\rm{sys}})$ mb at the $螞/\bar螞$ momentum of $1.074$ GeV/$c$ within a range of $\pm0.017$ GeV/$c$, where the $胃_{螞/\bar螞}$ are the scattering angles of the $螞/\bar螞$ in the $螞p/\bar螞p$ rest frames. Furthermore, the differential cross sections of the two reactions are also measured, where there is a slight tendency of forward scattering for $螞p\rightarrow螞p$, and a strong forward peak for $\bar螞p\rightarrow\bar螞p$. We present an approach to extract the total elastic cross sections by extrapolation. The study of $\bar螞p\rightarrow\bar螞p$ represents the first study of antihyperon-nucleon scattering, and these new measurements will serve as important inputs for the theoretical understanding of the (anti)hyperon-nucleon interaction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.09012v2-abstract-full').style.display = 'none'; document.getElementById('2401.09012v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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, 5 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.00720">arXiv:2310.00720</a> <span> [<a href="https://arxiv.org/pdf/2310.00720">pdf</a>, <a href="https://arxiv.org/format/2310.00720">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.109.L052201">10.1103/PhysRevC.109.L052201 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First measurement of $螞N$ inelastic scattering with $螞$ from $e^{+} e^{-} \rightarrow J/蠄\to 螞\bar螞$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Afedulidis%2C+O">O. Afedulidis</a>, <a href="/search/nucl-ex?searchtype=author&query=Ai%2C+X+C">X. C. Ai</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Bao%2C+H+-">H. -R. Bao</a>, <a href="/search/nucl-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/nucl-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a> , et al. (626 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="2310.00720v1-abstract-short" style="display: inline;"> Using an $e^+ e^-$ collision data sample of $(10087 \pm 44)\times10^6 ~J/蠄$ events taken at the center-of-mass energy of $3.097~\rm{GeV}$ by the BESIII detector at the BEPCII collider, the process $螞+N \rightarrow 危^+ + X$ is studied for the first time employing a novel method. The $危^{+}$ hyperons are produced by the collisions of $螞$ hyperons from $J/蠄$ decays with nuclei in the material of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.00720v1-abstract-full').style.display = 'inline'; document.getElementById('2310.00720v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.00720v1-abstract-full" style="display: none;"> Using an $e^+ e^-$ collision data sample of $(10087 \pm 44)\times10^6 ~J/蠄$ events taken at the center-of-mass energy of $3.097~\rm{GeV}$ by the BESIII detector at the BEPCII collider, the process $螞+N \rightarrow 危^+ + X$ is studied for the first time employing a novel method. The $危^{+}$ hyperons are produced by the collisions of $螞$ hyperons from $J/蠄$ decays with nuclei in the material of the BESIII detector. The total cross section of $螞+ ^{9}{\rm Be} \rightarrow 危^+ + X$ is measured to be $蟽= (37.3 \pm 4.7 \pm 3.5)~{\rm mb}$ at $螞$ beam momenta within $[1.057, 1.091]~{\rm GeV}/c$, where the uncertainties are statistical and systematic, respectively. This analysis is the first study of $螞$-nucleon interactions at an $e^+ e^-$ collider, providing information and constraints relevant for the strong-interaction potential, the origin of color confinement, the unified model for baryon-baryon interactions, and the internal structure of neutron stars. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.00720v1-abstract-full').style.display = 'none'; document.getElementById('2310.00720v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.16877">arXiv:2309.16877</a> <span> [<a href="https://arxiv.org/pdf/2309.16877">pdf</a>, <a href="https://arxiv.org/format/2309.16877">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/nucl-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bouillaud%2C+T">T. Bouillaud</a>, <a href="/search/nucl-ex?searchtype=author&query=Bowles%2C+D">D. Bowles</a>, <a href="/search/nucl-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+W">W. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/nucl-ex?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/nucl-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/nucl-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/nucl-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/nucl-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/nucl-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/nucl-ex?searchtype=author&query=Grujic%2C+Z+D">Z. D. Grujic</a>, <a href="/search/nucl-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/nucl-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/nucl-ex?searchtype=author&query=Kletzl%2C+V">V. Kletzl</a>, <a href="/search/nucl-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/nucl-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/nucl-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/nucl-ex?searchtype=author&query=Lejuez%2C+A">A. Lejuez</a> , et al. (25 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.16877v1-abstract-short" style="display: inline;"> High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optim… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16877v1-abstract-full').style.display = 'inline'; document.getElementById('2309.16877v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.16877v1-abstract-full" style="display: none;"> High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ~1.4 m^3, the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12 h down to ~1.5 h. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16877v1-abstract-full').style.display = 'none'; document.getElementById('2309.16877v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.07197">arXiv:2308.07197</a> <span> [<a href="https://arxiv.org/pdf/2308.07197">pdf</a>, <a href="https://arxiv.org/format/2308.07197">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> </div> </div> <p class="title is-5 mathjax"> Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+M+K">M. K. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">M. Paolone</a>, <a href="/search/nucl-ex?searchtype=author&query=Sparveris%2C+N">N. Sparveris</a>, <a href="/search/nucl-ex?searchtype=author&query=Sayadat%2C+N">N. Sayadat</a>, <a href="/search/nucl-ex?searchtype=author&query=Shesthra%2C+S">S. Shesthra</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Webster%2C+S">S. Webster</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">J-P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Covrig-Dusa%2C+S">S. Covrig-Dusa</a>, <a href="/search/nucl-ex?searchtype=author&query=Deur%2C+A">A. Deur</a>, <a href="/search/nucl-ex?searchtype=author&query=McCaughan%2C+M+D">M. D. McCaughan</a>, <a href="/search/nucl-ex?searchtype=author&query=Tadepalli%2C+A">A. Tadepalli</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+S">S. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Meziani%2C+Z+E">Z. E. Meziani</a>, <a href="/search/nucl-ex?searchtype=author&query=Peng%2C+C">C. Peng</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+M">M. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Katramatou%2C+A+T">A. T. Katramatou</a>, <a href="/search/nucl-ex?searchtype=author&query=Petratos%2C+G+G">G. G. Petratos</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E">E. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J">J. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Cline%2C+E">E. Cline</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+W">W. Li</a> , et al. (15 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="2308.07197v1-abstract-short" style="display: inline;"> We propose to conduct a measurement of the Virtual Compton Scattering reaction in Hall C that will allow the precise extraction of the two scalar Generalized Polarizabilities (GPs) of the proton in the region of $Q^2=0.05~(GeV/c)^2$ to $Q^2=0.50~(GeV/c)^2$. The Generalized Polarizabilities are fundamental properties of the proton, that characterize the system's response to an external electromagne… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.07197v1-abstract-full').style.display = 'inline'; document.getElementById('2308.07197v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.07197v1-abstract-full" style="display: none;"> We propose to conduct a measurement of the Virtual Compton Scattering reaction in Hall C that will allow the precise extraction of the two scalar Generalized Polarizabilities (GPs) of the proton in the region of $Q^2=0.05~(GeV/c)^2$ to $Q^2=0.50~(GeV/c)^2$. The Generalized Polarizabilities are fundamental properties of the proton, that characterize the system's response to an external electromagnetic (EM) field. They describe how easily the charge and magnetization distributions inside the system are distorted by the EM field, mapping out the resulting deformation of the densities in the proton. As such, they reveal unique information regarding the underlying system dynamics and provide a key for decoding the proton structure in terms of the theory of the strong interaction that binds its elementary quark and gluon constituents together. Recent measurements of the proton GPs have challenged the theoretical predictions, particularly in regard to the electric polarizability. The magnetic GP, on the other hand, can provide valuable insight to the competing paramagnetic and diamagnetic contributions in the proton, but it is poorly known within the region where the interplay of these processes is very dynamic and rapidly changing.The unique capabilities of Hall C, namely the high resolution of the spectrometers combined with the ability to place the spectrometers in small angles, will allow to pin down the dynamic signature of the GPs through high precision measurements combined with a fine mapping as a function of $Q^2$. The experimental setup utilizes standard Hall C equipment, as was previously employed in the VCS-I (E12-15-001) experiment, namely the HMS and SHMS spectrometers and a 10 cm liquid hydrogen target. A total of 59 days of unpolarized 75 $渭A$ electron beam with energy of 1100 MeV (6 days) and 2200 MeV (53 days) is requested for this experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.07197v1-abstract-full').style.display = 'none'; document.getElementById('2308.07197v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.11324">arXiv:2305.11324</a> <span> [<a href="https://arxiv.org/pdf/2305.11324">pdf</a>, <a href="https://arxiv.org/format/2305.11324">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> </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.107.064309">10.1103/PhysRevC.107.064309 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Decay Spectroscopy of $^{160}$Eu: Quasiparticle Configurations of Excited States and Structure of $K^蟺$=$4^+$ Band-heads in $^{160}$Gd </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yates%2C+D">D. Yates</a>, <a href="/search/nucl-ex?searchtype=author&query=Kruecken%2C+R">R. Kruecken</a>, <a href="/search/nucl-ex?searchtype=author&query=Dillmann%2C+I">I. Dillmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Garrett%2C+P+E">P. E. Garrett</a>, <a href="/search/nucl-ex?searchtype=author&query=Olaizola%2C+B">B. Olaizola</a>, <a href="/search/nucl-ex?searchtype=author&query=Vedia%2C+V">V. Vedia</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+F+A">F. A. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreoiu%2C+C">C. Andreoiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ashfield%2C+W">W. Ashfield</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+G+C">G. C. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Beadle%2C+Z">Z. Beadle</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernier%2C+N">N. Bernier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhattacharjee%2C+S+S">S. S. Bhattacharjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Bidaman%2C+H">H. Bidaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Bildstein%2C+V">V. Bildstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Bishop%2C+D">D. Bishop</a>, <a href="/search/nucl-ex?searchtype=author&query=Bowry%2C+M">M. Bowry</a>, <a href="/search/nucl-ex?searchtype=author&query=Burbadge%2C+C">C. Burbadge</a>, <a href="/search/nucl-ex?searchtype=author&query=Caballero-Folch%2C+R">R. Caballero-Folch</a>, <a href="/search/nucl-ex?searchtype=author&query=Chaney%2C+D+Z">D. Z. Chaney</a>, <a href="/search/nucl-ex?searchtype=author&query=Cross%2C+D+C">D. C. Cross</a>, <a href="/search/nucl-ex?searchtype=author&query=Varela%2C+A+D">A. Diaz Varela</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+M+R">M. R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+R">R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Evitts%2C+L+J">L. J. Evitts</a> , et al. (23 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.11324v1-abstract-short" style="display: inline;"> \noindent \textbf{Background:} Detailed spectroscopy of neutron-rich, heavy, deformed nuclei is of broad interest for nuclear astrophysics and nuclear structure. Nuclei in the r-process path and following freeze-out region impact the resulting r-process abundance distribution, and the structure of nuclei midshell in both proton and neutron number helps to understand the evolution of subshell gaps… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11324v1-abstract-full').style.display = 'inline'; document.getElementById('2305.11324v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.11324v1-abstract-full" style="display: none;"> \noindent \textbf{Background:} Detailed spectroscopy of neutron-rich, heavy, deformed nuclei is of broad interest for nuclear astrophysics and nuclear structure. Nuclei in the r-process path and following freeze-out region impact the resulting r-process abundance distribution, and the structure of nuclei midshell in both proton and neutron number helps to understand the evolution of subshell gaps and large deformation in these nuclei. \noindent \textbf{Purpose:} To improve the understanding of the nuclear structure of $^{160}$Gd, specifically the $K^蟺$=$4^+$ bands, as well as study the $尾$-decay of $^{160}$Eu into $^{160}$Gd. \noindent \textbf{Methods:} High-statistics decay spectroscopy of $^{160}$Gd resulting from the $尾$-decay of $^{160}$Eu was collected using the GRIFFIN spectrometer at the TRIUMF-ISAC facility. \noindent \textbf{Results:} Two new excited states and ten new transitions were observed in $^{160}$Gd. The $尾$-decaying half-lives of the low- and high-spin isomer in $^{160}$Eu were determined, and the low-spin state's half-life was measured to be $t_{1/2}=26.0(8)$~s, $\sim$16\% shorter than previous measurements. Lifetimes of the two $K^蟺$=$4^+$ band-heads in $^{160}$Gd were measured for the first time, as well as $纬$-$纬$ angular correlations and mixing ratios of intense transitions out of those band-heads. \noindent \textbf{Conclusions:} Lifetimes and mixing ratios suggest that the hexadecapole phonon model of the $K^蟺$=$4^+$ band-heads in $^{160}$Gd is preferred over a simple two-state strong mixing scenario, although further theoretical calculations are needed to fully understand these states. Additionally, the 1999.0 keV state in $^{160}$Gd heavily populated in $尾$-decay is shown to have positive parity, which raises questions regarding the structure of the high-spin $尾$-decaying state in $^{160}$Eu. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11324v1-abstract-full').style.display = 'none'; document.getElementById('2305.11324v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.00894">arXiv:2305.00894</a> <span> [<a href="https://arxiv.org/pdf/2305.00894">pdf</a>, <a href="https://arxiv.org/format/2305.00894">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/10.1088/1674-1137/ad597b">10.1088/1674-1137/ad597b <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for $^{76}$Ge neutrinoless double beta decay with the CDEX-1B experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+B+T">B. T. Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+Z">J. Z. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/nucl-ex?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/nucl-ex?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/nucl-ex?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+X">X. Jiang</a> , et al. (60 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.00894v3-abstract-short" style="display: inline;"> We operated a p-type point contact high purity germanium (PPCGe) detector (CDEX-1B, 1.008 kg) in the China Jinping Underground Laboratory (CJPL) for 500.3 days to search for neutrinoless double beta ($0谓尾尾$) decay of $^{76}$Ge. A total of 504.3 kg$\cdot$day effective exposure data was accumulated. The anti-coincidence and the multi/single-site event (MSE/SSE) discrimination methods were used to su… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.00894v3-abstract-full').style.display = 'inline'; document.getElementById('2305.00894v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.00894v3-abstract-full" style="display: none;"> We operated a p-type point contact high purity germanium (PPCGe) detector (CDEX-1B, 1.008 kg) in the China Jinping Underground Laboratory (CJPL) for 500.3 days to search for neutrinoless double beta ($0谓尾尾$) decay of $^{76}$Ge. A total of 504.3 kg$\cdot$day effective exposure data was accumulated. The anti-coincidence and the multi/single-site event (MSE/SSE) discrimination methods were used to suppress the background in the energy region of interest (ROI, 1989$-$2089 keV for this work) with a factor of 23. A background level of 0.33 counts/(keV$\cdot$kg$\cdot$yr) was realized. The lower limit on the half life of $^{76}$Ge $0谓尾尾$ decay was constrained as $T_{1/2}^{0谓}\ > \ {1.0}\times 10^{23}\ \rm yr\ (90\% \ C.L.)$, corresponding to the upper limits on the effective Majorana neutrino mass: $\langle m_{尾尾}\rangle < $3.2$-$7.5$\ \mathrm{eV}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.00894v3-abstract-full').style.display = 'none'; document.getElementById('2305.00894v3-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 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">11 pages, 12 figures, 2 tables. Version updated to match CPC version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C 48, 101001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.13921">arXiv:2304.13921</a> <span> [<a href="https://arxiv.org/pdf/2304.13921">pdf</a>, <a href="https://arxiv.org/ps/2304.13921">ps</a>, <a href="https://arxiv.org/format/2304.13921">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.130.251902">10.1103/PhysRevLett.130.251902 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First study of reaction $螢^{0}n\rightarrow螢^{-}p$ using $螢^0$-nucleus scattering at an electron-positron collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+M+R">M. R. An</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Batozskaya%2C+V">V. Batozskaya</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlowski%2C+M">M. Berlowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianco%2C+E">E. Bianco</a>, <a href="/search/nucl-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/nucl-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/nucl-ex?searchtype=author&query=Brueggemann%2C+A">A. Brueggemann</a> , et al. (593 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="2304.13921v3-abstract-short" style="display: inline;"> Using $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected with the BESIII detector at the BEPCII storage ring, the process $螢^{0}n\rightarrow螢^{-}p$ is studied, where the $螢^0$ baryon is produced in the process $J/蠄\rightarrow螢^0\bar螢^0$ and the neutron is a component of the $^9\rm{Be}$, $^{12}\rm{C}$ and $^{197}\rm{Au}$ nuclei in the beam pipe. A clear signal is observed with a statistical si… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.13921v3-abstract-full').style.display = 'inline'; document.getElementById('2304.13921v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.13921v3-abstract-full" style="display: none;"> Using $(1.0087\pm0.0044)\times10^{10}$ $J/蠄$ events collected with the BESIII detector at the BEPCII storage ring, the process $螢^{0}n\rightarrow螢^{-}p$ is studied, where the $螢^0$ baryon is produced in the process $J/蠄\rightarrow螢^0\bar螢^0$ and the neutron is a component of the $^9\rm{Be}$, $^{12}\rm{C}$ and $^{197}\rm{Au}$ nuclei in the beam pipe. A clear signal is observed with a statistical significance of $7.1蟽$. The cross section of the reaction $螢^0+{^9\rm{Be}}\rightarrow螢^-+p+{^8\rm{Be}}$ is determined to be $蟽(螢^0+{^9\rm{Be}}\rightarrow螢^-+p+{^8\rm{Be}})=(22.1\pm5.3_{\rm{stat}}\pm4.5_{\rm{sys}})$ mb at the $螢^0$ momentum of $0.818$ GeV/$c$, where the first uncertainty is statistical and the second is systematic. No significant $H$-dibaryon signal is observed in the $螢^-p$ final state. This is the first study of hyperon-nucleon interactions in electron-positron collisions and opens up a new direction for such research. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.13921v3-abstract-full').style.display = 'none'; document.getElementById('2304.13921v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">13 pages, 7 figures, with Supplemental Material</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.11461">arXiv:2210.11461</a> <span> [<a href="https://arxiv.org/pdf/2210.11461">pdf</a>, <a href="https://arxiv.org/format/2210.11461">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="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/10.1038/s41586-022-05248-1">10.1038/s41586-022-05248-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measured proton electromagnetic structure deviates from theoretical predictions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Sparveris%2C+N">N. Sparveris</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+M+K">M. K. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">M. Paolone</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+-">J. -P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Duran%2C+B">B. Duran</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Hansen%2C+O">O. Hansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauenstein%2C+F">F. Hauenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Heinrich%2C+N">N. Heinrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Henry%2C+W">W. Henry</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">T. Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Huber%2C+G+M">G. M. Huber</a>, <a href="/search/nucl-ex?searchtype=author&query=Jia%2C+S">S. Jia</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+S">S. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Karki%2C+A">A. Karki</a> , et al. (22 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.11461v1-abstract-short" style="display: inline;"> The visible world is founded on the proton, the only composite building block of matter that is stable in nature. Consequently, understanding the formation of matter relies on explaining the dynamics and the properties of the proton's bound state.A fundamental property of the proton involves the response of the system to an external electromagnetic field. It is characterized by the electromagnetic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11461v1-abstract-full').style.display = 'inline'; document.getElementById('2210.11461v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.11461v1-abstract-full" style="display: none;"> The visible world is founded on the proton, the only composite building block of matter that is stable in nature. Consequently, understanding the formation of matter relies on explaining the dynamics and the properties of the proton's bound state.A fundamental property of the proton involves the response of the system to an external electromagnetic field. It is characterized by the electromagnetic polarizabilities that describe how easily the charge and magnetization distributions inside the system are distorted by the electromagnetic field. Moreover, the generalized polarizabilities map out the resulting deformation of the densities in a proton subject to an electromagnetic field. They disclose essential information about the underlying system dynamics and provide a key for decoding the proton structure in terms of the theory of the strong interaction that binds its elementary quark and gluon constituents. Of particular interest is a puzzle in the electric generalized polarizability of the proton that remains unresolved for two decades. Here we report measurements of the proton's electromagnetic generalized polarizabilities at low four-momentum transfer squared. We show evidence of an anomaly to the behaviour of the proton's electric generalized polarizability that contradicts the predictions of nuclear theory and derive its signature in the spatial distribution of the induced polarization in the proton. The reported measurements suggest the presence of a new, not-yet-understood dynamical mechanism in the proton and present notable challenges to the nuclear theory. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.11461v1-abstract-full').style.display = 'none'; document.getElementById('2210.11461v1-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 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.08437">arXiv:2210.08437</a> <span> [<a href="https://arxiv.org/pdf/2210.08437">pdf</a>, <a href="https://arxiv.org/format/2210.08437">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3847/1538-4357/ad2bfd">10.3847/1538-4357/ad2bfd <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Model Independent Approach of the JUNO $^8$B Solar Neutrino Program </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhao%2C+J">Jie Zhao</a>, <a href="/search/nucl-ex?searchtype=author&query=Yue%2C+B">Baobiao Yue</a>, <a href="/search/nucl-ex?searchtype=author&query=Lu%2C+H">Haoqi Lu</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Y">Yufeng Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Ling%2C+J">Jiajie Ling</a>, <a href="/search/nucl-ex?searchtype=author&query=Yu%2C+Z">Zeyuan Yu</a>, <a href="/search/nucl-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+R">Rizwan Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/nucl-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/nucl-ex?searchtype=author&query=Aleem%2C+A">Abid Aleem</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexandros%2C+T">Tsagkarakis Alexandros</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/nucl-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/nucl-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">Jo茫o Pedro Athayde Marcondes de Andr茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+W">Weidong Bai</a> , et al. (579 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.08437v2-abstract-short" style="display: inline;"> The physics potential of detecting $^8$B solar neutrinos will be exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model independent manner by using three distinct channels of the charged-current (CC), neutral-current (NC) and elastic scattering (ES) interactions. Due to the largest-ever mass of $^{13}$C nuclei in the liquid-scintillator detectors and the {expected} low backg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.08437v2-abstract-full').style.display = 'inline'; document.getElementById('2210.08437v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.08437v2-abstract-full" style="display: none;"> The physics potential of detecting $^8$B solar neutrinos will be exploited at the Jiangmen Underground Neutrino Observatory (JUNO), in a model independent manner by using three distinct channels of the charged-current (CC), neutral-current (NC) and elastic scattering (ES) interactions. Due to the largest-ever mass of $^{13}$C nuclei in the liquid-scintillator detectors and the {expected} low background level, $^8$B solar neutrinos would be observable in the CC and NC interactions on $^{13}$C for the first time. By virtue of optimized event selections and muon veto strategies, backgrounds from the accidental coincidence, muon-induced isotopes, and external backgrounds can be greatly suppressed. Excellent signal-to-background ratios can be achieved in the CC, NC and ES channels to guarantee the $^8$B solar neutrino observation. From the sensitivity studies performed in this work, we show that JUNO, with ten years of data, can reach the {1$蟽$} precision levels of 5%, 8% and 20% for the $^8$B neutrino flux, $\sin^2胃_{12}$, and $螖m^2_{21}$, respectively. It would be unique and helpful to probe the details of both solar physics and neutrino physics. In addition, when combined with SNO, the world-best precision of 3% is expected for the $^8$B neutrino flux measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.08437v2-abstract-full').style.display = 'none'; document.getElementById('2210.08437v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 7 figures, accepted version to appear in The Astrophysical Journal. Yufeng Li and Jiajie Ling are corresponding authors</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Astrophysical Journal 965 (2024) 122 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.05212">arXiv:2207.05212</a> <span> [<a href="https://arxiv.org/pdf/2207.05212">pdf</a>, <a href="https://arxiv.org/format/2207.05212">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="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41586-023-05730-4">10.1038/s41586-023-05730-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determining the Proton's Gluonic Gravitational Form Factors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Duran%2C+B">B. Duran</a>, <a href="/search/nucl-ex?searchtype=author&query=Meziani%2C+Z+-">Z. -E. Meziani</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+S">S. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+M+K">M. K. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Peng%2C+C">C. Peng</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudakov%2C+E">E. Chudakov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhatt%2C+H">H. Bhatt</a>, <a href="/search/nucl-ex?searchtype=author&query=Bhetuwal%2C+D">D. Bhetuwal</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+-">J. -P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalton%2C+M+M">M. M. Dalton</a>, <a href="/search/nucl-ex?searchtype=author&query=Deokar%2C+N">N. Deokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunne%2C+J">J. Dunne</a>, <a href="/search/nucl-ex?searchtype=author&query=Fassi%2C+L+E">L. El Fassi</a>, <a href="/search/nucl-ex?searchtype=author&query=Fuchey%2C+E">E. Fuchey</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+H">H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Hansen%2C+O">O. Hansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauenstein%2C+F">F. Hauenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Higinbotham%2C+D">D. Higinbotham</a> , et al. (30 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="2207.05212v4-abstract-short" style="display: inline;"> The proton is one of the main building blocks of all visible matter in the universe. Among its intrinsic properties are its electric charge, mass, and spin. These emerge from the complex dynamics of its fundamental constituents, quarks and gluons, described by the theory of quantum chromodynamics (QCD). Using electron scattering, its electric charge and spin, shared among the quark constituents, h… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.05212v4-abstract-full').style.display = 'inline'; document.getElementById('2207.05212v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.05212v4-abstract-full" style="display: none;"> The proton is one of the main building blocks of all visible matter in the universe. Among its intrinsic properties are its electric charge, mass, and spin. These emerge from the complex dynamics of its fundamental constituents, quarks and gluons, described by the theory of quantum chromodynamics (QCD). Using electron scattering, its electric charge and spin, shared among the quark constituents, have been the topic of active investigation. An example is the novel precision measurement of the proton's electric charge radius. In contrast, little is known about the proton's inner mass density, dominated by the energy carried by the gluons, which are hard to access through electron scattering since gluons carry no electromagnetic charge. Here, we chose to probe this gluonic gravitational density using a small color dipole, the $J/蠄$ particle, through its threshold photoproduction. From our data, we determined, for the first time, the proton's gluonic gravitational form factors. We used a variety of models and determined, in all cases, a mass radius that is notably smaller than the electric charge radius. In some cases, the determined radius, although model dependent, is in excellent agreement with first-principle predictions from lattice QCD. This work paves the way for a deeper understanding of the salient role of gluons in providing gravitational mass to visible matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.05212v4-abstract-full').style.display = 'none'; document.getElementById('2207.05212v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 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">Accepted for publication</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature 615, 813-816 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.10718">arXiv:2205.10718</a> <span> [<a href="https://arxiv.org/pdf/2205.10718">pdf</a>, <a href="https://arxiv.org/format/2205.10718">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/PhysRevD.106.032012">10.1103/PhysRevD.106.032012 <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 of $^{76}$Ge with a Natural Broad Energy Germanium Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=CDEX+collaboration"> CDEX collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/nucl-ex?searchtype=author&query=She%2C+Z">Z. She</a>, <a href="/search/nucl-ex?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/nucl-ex?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+X">X. Jiang</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="2205.10718v2-abstract-short" style="display: inline;"> A natural broad energy germanium (BEGe) detector is operated in the China Jinping Underground Laboratory (CJPL) for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0{$谓尾尾$}) decay of $^{76}$Ge. The setup of the prototype facility, characteristics of the BEGe detector, background reduction methods, and data analysis are described in this paper. A back… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10718v2-abstract-full').style.display = 'inline'; document.getElementById('2205.10718v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.10718v2-abstract-full" style="display: none;"> A natural broad energy germanium (BEGe) detector is operated in the China Jinping Underground Laboratory (CJPL) for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0{$谓尾尾$}) decay of $^{76}$Ge. The setup of the prototype facility, characteristics of the BEGe detector, background reduction methods, and data analysis are described in this paper. A background index of 6.4$\times$10$^{-3}$ counts/(keV$\cdot$kg$\cdot$day) is achieved and 1.86 times lower than our previous result of the CDEX-1 detector. No signal is observed with an exposure of 186.4 kg$\cdot$day, thus a limit on the half life of $^{76}$Ge 0$谓尾尾$ decay is set at T$_{1/2}^{0谓}$ $>$ 5.62$\times$10$^{22}$ yr at 90% C.L.. The limit corresponds to an effective Majorana neutrino mass in the range of 4.6 $\sim$ 10.3 eV, dependent on the nuclear matrix elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10718v2-abstract-full').style.display = 'none'; document.getElementById('2205.10718v2-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 15 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review D 106, 032012 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2106.12251">arXiv:2106.12251</a> <span> [<a href="https://arxiv.org/pdf/2106.12251">pdf</a>, <a href="https://arxiv.org/format/2106.12251">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/PhysRevLett.128.081801">10.1103/PhysRevLett.128.081801 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Joint Determination of Reactor Antineutrino Spectra from $^{235}$U and $^{239}$Pu Fission by Daya Bay and PROSPECT </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Daya+Bay+Collaboration"> Daya Bay Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=PROSPECT+Collaboration"> PROSPECT Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+F+P">F. P. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Andriamirado%2C+M">M. Andriamirado</a>, <a href="/search/nucl-ex?searchtype=author&query=Balantekin%2C+A+B">A. B. Balantekin</a>, <a href="/search/nucl-ex?searchtype=author&query=Band%2C+H+R">H. R. Band</a>, <a href="/search/nucl-ex?searchtype=author&query=Bass%2C+C+D">C. D. Bass</a>, <a href="/search/nucl-ex?searchtype=author&query=Bergeron%2C+D+E">D. E. Bergeron</a>, <a href="/search/nucl-ex?searchtype=author&query=Berish%2C+D">D. Berish</a>, <a href="/search/nucl-ex?searchtype=author&query=Bishai%2C+M">M. Bishai</a>, <a href="/search/nucl-ex?searchtype=author&query=Blyth%2C+S">S. Blyth</a>, <a href="/search/nucl-ex?searchtype=author&query=Bowden%2C+N+S">N. S. Bowden</a>, <a href="/search/nucl-ex?searchtype=author&query=Bryan%2C+C+D">C. D. Bryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+G+F">G. F. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+J">J. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+J+F">J. F. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+Y">Y. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+H+S">H. S. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+S+M">S. M. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Y. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y+X">Y. X. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+J">J. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheng%2C+Z+K">Z. K. Cheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Cherwinka%2C+J+J">J. J. Cherwinka</a>, <a href="/search/nucl-ex?searchtype=author&query=Chu%2C+M+C">M. C. Chu</a> , et al. (217 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2106.12251v2-abstract-short" style="display: inline;"> A joint determination of the reactor antineutrino spectra resulting from the fission of $^{235}$U and $^{239}$Pu has been carried out by the Daya Bay and PROSPECT collaborations. This Letter reports the level of consistency of $^{235}$U spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2106.12251v2-abstract-full').style.display = 'inline'; document.getElementById('2106.12251v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2106.12251v2-abstract-full" style="display: none;"> A joint determination of the reactor antineutrino spectra resulting from the fission of $^{235}$U and $^{239}$Pu has been carried out by the Daya Bay and PROSPECT collaborations. This Letter reports the level of consistency of $^{235}$U spectrum measurements from the two experiments and presents new results from a joint analysis of both data sets. The measurements are found to be consistent. The combined analysis reduces the degeneracy between the dominant $^{235}$U and $^{239}$Pu isotopes and improves the uncertainty of the $^{235}$U spectral shape to about 3\%. The ${}^{235}$U and $^{239}$Pu antineutrino energy spectra are unfolded from the jointly deconvolved reactor spectra using the Wiener-SVD unfolding method, providing a data-based reference for other reactor antineutrino experiments and other applications. This is the first measurement of the $^{235}$U and $^{239}$Pu spectra based on the combination of experiments at low- and highly enriched uranium reactors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2106.12251v2-abstract-full').style.display = 'none'; document.getElementById('2106.12251v2-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 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 June, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">8 pages, 5 figures, Supplementary Material Included</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review Letters 128, 081801 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2011.07855">arXiv:2011.07855</a> <span> [<a href="https://arxiv.org/pdf/2011.07855">pdf</a>, <a href="https://arxiv.org/ps/2011.07855">ps</a>, <a href="https://arxiv.org/format/2011.07855">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.126.102001">10.1103/PhysRevLett.126.102001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of a near-threshold structure in the $K^+$ recoil-mass spectra in $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adlarson%2C+P">P. Adlarson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Aliberti%2C+R">R. Aliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Anita"> Anita</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X+H">X. H. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Biernat%2C+J">J Biernat</a>, <a href="/search/nucl-ex?searchtype=author&query=Bloms%2C+J">J. Bloms</a>, <a href="/search/nucl-ex?searchtype=author&query=Bortone%2C+A">A. Bortone</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a> , et al. (481 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="2011.07855v2-abstract-short" style="display: inline;"> We report a study of the processes of $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ based on $e^+e^-$ annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb$^{-1}$. An excess over the known contributions of the conventional charmed mesons is observed near the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07855v2-abstract-full').style.display = 'inline'; document.getElementById('2011.07855v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2011.07855v2-abstract-full" style="display: none;"> We report a study of the processes of $e^+e^-\to K^+ (D_s^- D^{*0} + D^{*-}_s D^0)$ based on $e^+e^-$ annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb$^{-1}$. An excess over the known contributions of the conventional charmed mesons is observed near the $D_s^- D^{*0}$ and $D^{*-}_s D^0$ mass thresholds in the $K^{+}$ recoil-mass spectrum for events collected at $\sqrt{s}=4.681$ GeV. The structure matches a mass-dependent-width Breit-Wigner line shape, whose pole mass and width are determined as $(3982.5^{+1.8}_{-2.6}\pm2.1)$ MeV/$c^2$ and $(12.8^{+5.3}_{-4.4}\pm3.0)$ MeV, respectively. The first uncertainties are statistical and the second are systematic. The significance of the resonance hypothesis is estimated to be 5.3 $蟽$ over the contributions only from the conventional charmed mesons. This is the first candidate of the charged hidden-charm tetraquark with strangeness, decaying into $D_s^- D^{*0}$ and $D^{*-}_s D^0$. However, the properties of the excess need further exploration with more statistics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2011.07855v2-abstract-full').style.display = 'none'; document.getElementById('2011.07855v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 November, 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">17 pages; Version published in Phys. Rev. Lett</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 126, 102001 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.10541">arXiv:2009.10541</a> <span> [<a href="https://arxiv.org/pdf/2009.10541">pdf</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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Unfolding the Neutron Spectra from a Water-Pumping-Injection Multi-layered Concentric Sphere Neutron Spectrometer Using a Self-Adaptive Differential Evolution Algorithm </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">Rui Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+J">Jianbo Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Tuo%2C+X">Xianguo Tuo</a>, <a href="/search/nucl-ex?searchtype=author&query=Shi%2C+R">Rui Shi</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+J">Jie Xu</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="2009.10541v2-abstract-short" style="display: inline;"> A self-adaptive differential evolution neutron spectrum unfolding algorithm (SDENUA) was established in this paper to unfold the neutron spectra obtained from a Water-pumping-injection Multi-layered concentric sphere Neutron Spectrometer (WMNS). Specifically, the neutron fluence bounds were estimated to accelerate the algorithm convergence, the minimum error between the optimal solution and the in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.10541v2-abstract-full').style.display = 'inline'; document.getElementById('2009.10541v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.10541v2-abstract-full" style="display: none;"> A self-adaptive differential evolution neutron spectrum unfolding algorithm (SDENUA) was established in this paper to unfold the neutron spectra obtained from a Water-pumping-injection Multi-layered concentric sphere Neutron Spectrometer (WMNS). Specifically, the neutron fluence bounds were estimated to accelerate the algorithm convergence, the minimum error between the optimal solution and the input neutron counts with relative uncertainties was limited to 10-6 to avoid useless calculation. Furthermore, the crossover probability and scaling factor were controlled self-adaptively. FLUKA Monte Carlo was used to simulate the readings of the WMNS under (1) a spectrum of Cf-252 and (2) its spectrum after being moderated, (3) a spectrum used for BNCT, and (4) a reactor spectrum, and the measured neutron counts unfolded by using the SDENUA. The uncertainties of the measured neutron count and the response matrix are considered in the SDENUA, which does not require complex parameter tuning and the priori default spectrum. Results indicate that the solutions of the SDENUA are more in agreement with the IAEA spectra than that of the MAXED and GRAVEL in UMG 3.1, and the errors of the final results calculated by SDENUA are under 12%. The established SDENUA has potential applications for unfolding spectra from the WMNS. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.10541v2-abstract-full').style.display = 'none'; document.getElementById('2009.10541v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 January, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.02959">arXiv:2008.02959</a> <span> [<a href="https://arxiv.org/pdf/2008.02959">pdf</a>, <a href="https://arxiv.org/format/2008.02959">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="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/PhysRevC.102.024337">10.1103/PhysRevC.102.024337 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Decay Spectroscopy of $^{129}$Cd </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Saito%2C+Y">Y. Saito</a>, <a href="/search/nucl-ex?searchtype=author&query=Dillmann%2C+I">I. Dillmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Kr%C3%BCcken%2C+R">R. Kr眉cken</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernier%2C+N">N. Bernier</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+G+C">G. C. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Bowry%2C+M">M. Bowry</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreoiu%2C+C">C. Andreoiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Bidaman%2C+H">H. Bidaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Bildstein%2C+V">V. Bildstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Boubel%2C+P">P. Boubel</a>, <a href="/search/nucl-ex?searchtype=author&query=Burbadge%2C+C">C. Burbadge</a>, <a href="/search/nucl-ex?searchtype=author&query=Caballero-Folch%2C+R">R. Caballero-Folch</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+M+R">M. R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+R">R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Evitts%2C+L+J">L. J. Evitts</a>, <a href="/search/nucl-ex?searchtype=author&query=Garcia%2C+F+H">F. H. Garcia</a>, <a href="/search/nucl-ex?searchtype=author&query=Garnsworthy%2C+A+B">A. B. Garnsworthy</a>, <a href="/search/nucl-ex?searchtype=author&query=Garrett%2C+P+E">P. E. Garrett</a>, <a href="/search/nucl-ex?searchtype=author&query=Grawe%2C+H">H. Grawe</a>, <a href="/search/nucl-ex?searchtype=author&query=Hackman%2C+G">G. Hackman</a>, <a href="/search/nucl-ex?searchtype=author&query=Hallam%2C+S">S. Hallam</a>, <a href="/search/nucl-ex?searchtype=author&query=Henderson%2C+J">J. Henderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ilyushkin%2C+S">S. Ilyushkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Jungclaus%2C+A">A. Jungclaus</a>, <a href="/search/nucl-ex?searchtype=author&query=Kisliuk%2C+D">D. Kisliuk</a> , et al. (20 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="2008.02959v1-abstract-short" style="display: inline;"> Excited states of $^{129}$In populated following the $尾$-decay of $^{129}$Cd were experimentally studied with the GRIFFIN spectrometer at the ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a uranium carbide target and $^{129}$Cd was extracted using the Ion Guide Laser Ion Source (IG-LIS). $尾$- and $纬$-rays following the decay of $^{129}$Cd were detected with the GRIFFIN spe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.02959v1-abstract-full').style.display = 'inline'; document.getElementById('2008.02959v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.02959v1-abstract-full" style="display: none;"> Excited states of $^{129}$In populated following the $尾$-decay of $^{129}$Cd were experimentally studied with the GRIFFIN spectrometer at the ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a uranium carbide target and $^{129}$Cd was extracted using the Ion Guide Laser Ion Source (IG-LIS). $尾$- and $纬$-rays following the decay of $^{129}$Cd were detected with the GRIFFIN spectrometer comprising the plastic scintillator SCEPTAR and 16 high-purity germanium (HPGe) clover-type detectors. %, along with the $尾$-particles were detected with SCEPTAR. From the $尾$-$纬$-$纬$ coincidence analysis, 32 new transitions and 7 new excited states were established, expanding the previously known level scheme of $^{129}$In. The $\log ft$ values deduced from the $尾$-feeding intensities suggest that some of the high-lying states were populated by the $谓0 g_{7/2} \rightarrow 蟺0 g_{9/2}$ allowed Gamow-Teller (GT) transition, which indicates that the allowed GT transition is more dominant in the $^{129}$Cd decay than previously reported. Observation of fragmented Gamow-Teller strengths is consistent with theoretical calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.02959v1-abstract-full').style.display = 'none'; document.getElementById('2008.02959v1-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 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 9 figures, to be published in Physical Review C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 024337 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.14491">arXiv:2007.14491</a> <span> [<a href="https://arxiv.org/pdf/2007.14491">pdf</a>, <a href="https://arxiv.org/format/2007.14491">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/abf3ba">10.1088/1361-6471/abf3ba <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Large Hadron-Electron Collider at the HL-LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agostini%2C+P">P. Agostini</a>, <a href="/search/nucl-ex?searchtype=author&query=Aksakal%2C+H">H. Aksakal</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekhin%2C+S">S. Alekhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Allport%2C+P+P">P. P. Allport</a>, <a href="/search/nucl-ex?searchtype=author&query=Andari%2C+N">N. Andari</a>, <a href="/search/nucl-ex?searchtype=author&query=Andre%2C+K+D+J">K. D. J. Andre</a>, <a href="/search/nucl-ex?searchtype=author&query=Angal-Kalinin%2C+D">D. Angal-Kalinin</a>, <a href="/search/nucl-ex?searchtype=author&query=Antusch%2C+S">S. Antusch</a>, <a href="/search/nucl-ex?searchtype=author&query=Bella%2C+L+A">L. Aperio Bella</a>, <a href="/search/nucl-ex?searchtype=author&query=Apolinario%2C+L">L. Apolinario</a>, <a href="/search/nucl-ex?searchtype=author&query=Apsimon%2C+R">R. Apsimon</a>, <a href="/search/nucl-ex?searchtype=author&query=Apyan%2C+A">A. Apyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Arduini%2C+G">G. Arduini</a>, <a href="/search/nucl-ex?searchtype=author&query=Ari%2C+V">V. Ari</a>, <a href="/search/nucl-ex?searchtype=author&query=Armbruster%2C+A">A. Armbruster</a>, <a href="/search/nucl-ex?searchtype=author&query=Armesto%2C+N">N. Armesto</a>, <a href="/search/nucl-ex?searchtype=author&query=Auchmann%2C+B">B. Auchmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Aulenbacher%2C+K">K. Aulenbacher</a>, <a href="/search/nucl-ex?searchtype=author&query=Azuelos%2C+G">G. Azuelos</a>, <a href="/search/nucl-ex?searchtype=author&query=Backovic%2C+S">S. Backovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+I">I. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+S">S. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Balli%2C+F">F. Balli</a>, <a href="/search/nucl-ex?searchtype=author&query=Behera%2C+S">S. Behera</a>, <a href="/search/nucl-ex?searchtype=author&query=Behnke%2C+O">O. Behnke</a> , et al. (312 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.14491v2-abstract-short" style="display: inline;"> The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High Luminosity--Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent el… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14491v2-abstract-full').style.display = 'inline'; document.getElementById('2007.14491v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.14491v2-abstract-full" style="display: none;"> The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) to the energy and intensity frontier of particle physics. Exploiting energy recovery technology, it collides a novel, intense electron beam with a proton or ion beam from the High Luminosity--Large Hadron Collider (HL-LHC). The accelerator and interaction region are designed for concurrent electron-proton and proton-proton operation. This report represents an update of the Conceptual Design Report (CDR) of the LHeC, published in 2012. It comprises new results on parton structure of the proton and heavier nuclei, QCD dynamics, electroweak and top-quark physics. It is shown how the LHeC will open a new chapter of nuclear particle physics in extending the accessible kinematic range in lepton-nucleus scattering by several orders of magnitude. Due to enhanced luminosity, large energy and the cleanliness of the hadronic final states, the LHeC has a strong Higgs physics programme and its own discovery potential for new physics. Building on the 2012 CDR, the report represents a detailed updated design of the energy recovery electron linac (ERL) including new lattice, magnet, superconducting radio frequency technology and further components. Challenges of energy recovery are described and the lower energy, high current, 3-turn ERL facility, PERLE at Orsay, is presented which uses the LHeC characteristics serving as a development facility for the design and operation of the LHeC. An updated detector design is presented corresponding to the acceptance, resolution and calibration goals which arise from the Higgs and parton density function physics programmes. The paper also presents novel results on the Future Circular Collider in electron-hadron mode, FCC-eh, which utilises the same ERL technology to further extend the reach of DIS to even higher centre-of-mass energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.14491v2-abstract-full').style.display = 'none'; document.getElementById('2007.14491v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">373 pages, many figures, to be published by J. Phys. G</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-ACC-Note-2020-0002 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J.Phys.G 48 (2021) 11, 110501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.12015">arXiv:2005.12015</a> <span> [<a href="https://arxiv.org/pdf/2005.12015">pdf</a>, <a href="https://arxiv.org/format/2005.12015">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 - Lattice">hep-lat</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> <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.102.074504">10.1103/PhysRevD.102.074504 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Isovector parton distribution functions of the proton on a superfine lattice </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fan%2C+Z">Zhouyou Fan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+X">Xiang Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">Ruizi Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+H">Huey-Wen Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Karthik%2C+N">Nikhil Karthik</a>, <a href="/search/nucl-ex?searchtype=author&query=Mukherjee%2C+S">Swagato Mukherjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Petreczky%2C+P">Peter Petreczky</a>, <a href="/search/nucl-ex?searchtype=author&query=Syritsyn%2C+S">Sergey Syritsyn</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yi-Bo Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+R">Rui Zhang</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="2005.12015v2-abstract-short" style="display: inline;"> We study isovector unpolarized and helicity parton distribution functions (PDF) of the proton within the framework of Large Momentum Effective Theory. We use a gauge ensemble, generated by the MILC Collaboration, with a superfine lattice spacing of $0.042$ fm and a pion mass of $310$ MeV, enabling us to simultaneously reach sub-fermi spatial separations and larger nucleon momenta. We compare the s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12015v2-abstract-full').style.display = 'inline'; document.getElementById('2005.12015v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.12015v2-abstract-full" style="display: none;"> We study isovector unpolarized and helicity parton distribution functions (PDF) of the proton within the framework of Large Momentum Effective Theory. We use a gauge ensemble, generated by the MILC Collaboration, with a superfine lattice spacing of $0.042$ fm and a pion mass of $310$ MeV, enabling us to simultaneously reach sub-fermi spatial separations and larger nucleon momenta. We compare the spatial dependence of quasi-PDF matrix elements in different renormalization schemes with the corresponding results of the global fits, obtained using 1-loop perturbative matching. We present determinations of the first four moments of the unpolarized and helicity PDFs of proton from the Ioffe-time dependence of the isovector matrix elements, obtained by employing a ratio-based renormalization scheme. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12015v2-abstract-full').style.display = 'none'; document.getElementById('2005.12015v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 34 figures. Accepted version for PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 102, 074504 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.08745">arXiv:2005.08745</a> <span> [<a href="https://arxiv.org/pdf/2005.08745">pdf</a>, <a href="https://arxiv.org/format/2005.08745">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> TAO Conceptual Design Report: A Precision Measurement of the Reactor Antineutrino Spectrum with Sub-percent Energy Resolution </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=JUNO+Collaboration"> JUNO Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Abusleme%2C+A">Angel Abusleme</a>, <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+T">Thomas Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmad%2C+S">Shakeel Ahmad</a>, <a href="/search/nucl-ex?searchtype=author&query=Aiello%2C+S">Sebastiano Aiello</a>, <a href="/search/nucl-ex?searchtype=author&query=Akram%2C+M">Muhammad Akram</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+N">Nawab Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+F">Fengpeng An</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+G">Guangpeng An</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Qi An</a>, <a href="/search/nucl-ex?searchtype=author&query=Andronico%2C+G">Giuseppe Andronico</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N">Nikolay Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Antonelli%2C+V">Vito Antonelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Antoshkina%2C+T">Tatiana Antoshkina</a>, <a href="/search/nucl-ex?searchtype=author&query=Asavapibhop%2C+B">Burin Asavapibhop</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Andr%C3%A9%2C+J+P+A+M">Jo茫o Pedro Athayde Marcondes de Andr茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Auguste%2C+D">Didier Auguste</a>, <a href="/search/nucl-ex?searchtype=author&query=Babic%2C+A">Andrej Babic</a>, <a href="/search/nucl-ex?searchtype=author&query=Baldini%2C+W">Wander Baldini</a>, <a href="/search/nucl-ex?searchtype=author&query=Barresi%2C+A">Andrea Barresi</a>, <a href="/search/nucl-ex?searchtype=author&query=Baussan%2C+E">Eric Baussan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellato%2C+M">Marco Bellato</a>, <a href="/search/nucl-ex?searchtype=author&query=Bergnoli%2C+A">Antonio Bergnoli</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernieri%2C+E">Enrico Bernieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Biare%2C+D">David Biare</a> , et al. (568 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2005.08745v1-abstract-short" style="display: inline;"> The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). A ton-level liquid scintillator detector will be placed at about 30 m from a core of the Taishan Nuclear Power Plant. The reactor antineutrino spectrum will be measured with sub-percent energy resolution, to provide a reference spectrum for future re… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.08745v1-abstract-full').style.display = 'inline'; document.getElementById('2005.08745v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.08745v1-abstract-full" style="display: none;"> The Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) is a satellite experiment of the Jiangmen Underground Neutrino Observatory (JUNO). A ton-level liquid scintillator detector will be placed at about 30 m from a core of the Taishan Nuclear Power Plant. The reactor antineutrino spectrum will be measured with sub-percent energy resolution, to provide a reference spectrum for future reactor neutrino experiments, and to provide a benchmark measurement to test nuclear databases. A spherical acrylic vessel containing 2.8 ton gadolinium-doped liquid scintillator will be viewed by 10 m^2 Silicon Photomultipliers (SiPMs) of >50% photon detection efficiency with almost full coverage. The photoelectron yield is about 4500 per MeV, an order higher than any existing large-scale liquid scintillator detectors. The detector operates at -50 degree C to lower the dark noise of SiPMs to an acceptable level. The detector will measure about 2000 reactor antineutrinos per day, and is designed to be well shielded from cosmogenic backgrounds and ambient radioactivities to have about 10% background-to-signal ratio. The experiment is expected to start operation in 2022. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.08745v1-abstract-full').style.display = 'none'; document.getElementById('2005.08745v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">134 pages, 114 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.11377">arXiv:1909.11377</a> <span> [<a href="https://arxiv.org/pdf/1909.11377">pdf</a>, <a href="https://arxiv.org/format/1909.11377">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> </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.101.024305">10.1103/PhysRevC.101.024305 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simultaneous measurement of beta-delayed proton and gamma emission of $^{26}$P for $^{25}$Al($p,纬$)$^{26}$Si reaction rate </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+P+F">P. F. Liang</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+L+J">L. J. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+S+Q">S. Q. Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+X">X. X. Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C+J">C. J. Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+C+X">C. X. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J+J">J. J. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z+H">Z. H. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+S">J. S. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+D+X">D. X. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wu%2C+H+Y">H. Y. Wu</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y+Y">Y. Y. Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lam%2C+Y+H">Y. H. Lam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">P. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F+F">F. F. Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z+H">Z. H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Q">Q. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Z. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J+B">J. B. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+G">J. G. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhong%2C+F+P">F. P. Zhong</a>, <a href="/search/nucl-ex?searchtype=author&query=Wu%2C+C+G">C. G. Wu</a>, <a href="/search/nucl-ex?searchtype=author&query=Luo%2C+D+W">D. W. Luo</a>, <a href="/search/nucl-ex?searchtype=author&query=Jiang%2C+Y">Y. Jiang</a> , et al. (31 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1909.11377v1-abstract-short" style="display: inline;"> $尾$ decay of $^{26}$P was used to populate the astrophysically important $E_x=$5929.4(8) keV $J^蟺=3{^+}$ state of $^{26}$Si. Both $尾… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.11377v1-abstract-full').style.display = 'inline'; document.getElementById('1909.11377v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.11377v1-abstract-full" style="display: none;"> $尾$ decay of $^{26}$P was used to populate the astrophysically important $E_x=$5929.4(8) keV $J^蟺=3{^+}$ state of $^{26}$Si. Both $尾$-delayed proton at 418(8) keV and gamma ray at 1742(2) keV emitted from this state were measured simultaneously for the first time with corresponding absolute intensities of 11.1(12)\% and 0.59(44)\%, respectively. Besides, shell model calculations with weakly bound effects were performed to investigate the decay properties of other resonant states and a spin-parity of $4^+$ rather than $0^+$ was favored for the $E_x=$5945.9(40) keV state. Combining the experimental results and theoretical calculations, $^{25}$Al($p,纬$)$^{26}$Si reaction rate in explosive hydrogen burning environments was calculated and compared with previous studies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.11377v1-abstract-full').style.display = 'none'; document.getElementById('1909.11377v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 101, 024305 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.03221">arXiv:1909.03221</a> <span> [<a href="https://arxiv.org/pdf/1909.03221">pdf</a>, <a href="https://arxiv.org/format/1909.03221">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="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/PhysRevC.100.054601">10.1103/PhysRevC.100.054601 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fusion reactions in the $^9$Be + $^{197}$Au system above the Coulomb barrier </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+G+S">G. S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+G">J. G. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lubian%2C+J">J. Lubian</a>, <a href="/search/nucl-ex?searchtype=author&query=Soler%2C+H+O">H. O. Soler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fang%2C+Y+D">Y. D. Fang</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+M+L">M. L. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+N+T">N. T. Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhou%2C+X+H">X. H. Zhou</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+Y+H">Y. H. Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+B+S">B. S. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Qiang%2C+Y+H">Y. H. Qiang</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+S">S. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+S+C">S. C. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+K+L">K. L. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zheng%2C+K+K">K. K. Zheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Zheng%2C+Y">Y. Zheng</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="1909.03221v2-abstract-short" style="display: inline;"> The cross sections of complete fusion and incomplete fusion for the $ ^{9} $Be + $ ^{197} $Au system, at energies not too much above the Coulomb barrier, were measured for the first time. The online activation followed by offline $纬$-ray spectroscopy method was used for the derivation of the cross sections. A slightly higher value of ICF/TF ratio has been observed, compared to other systems report… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.03221v2-abstract-full').style.display = 'inline'; document.getElementById('1909.03221v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.03221v2-abstract-full" style="display: none;"> The cross sections of complete fusion and incomplete fusion for the $ ^{9} $Be + $ ^{197} $Au system, at energies not too much above the Coulomb barrier, were measured for the first time. The online activation followed by offline $纬$-ray spectroscopy method was used for the derivation of the cross sections. A slightly higher value of ICF/TF ratio has been observed, compared to other systems reported in the literature with $ ^{9} $Be beam. The experimental data were compared with coupled channel calculations without taking into account the coupling of the breakup channel, and experimental data of other reaction systems with weakly bound projectiles. A complete fusion suppression of about 40\% was found for the $ ^{9} $Be + $ ^{197} $Au system, at energies above the barrier, whereas the total fusion cross sections are in agreement with the calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.03221v2-abstract-full').style.display = 'none'; document.getElementById('1909.03221v2-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 100, 054601 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.06931">arXiv:1904.06931</a> <span> [<a href="https://arxiv.org/pdf/1904.06931">pdf</a>, <a href="https://arxiv.org/format/1904.06931">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="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/10.1016/j.physletb.2019.06.040">10.1016/j.physletb.2019.06.040 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Diversity of shapes and rotations in the gamma-soft 130Ba nucleus: first observation of a t-band in the A=130 mass region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Petrache%2C+C+M">C. M. Petrache</a>, <a href="/search/nucl-ex?searchtype=author&query=Walker%2C+P+M">P. M. Walker</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+S">S. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Q+B">Q. B. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Frauendorf%2C+S">S. Frauendorf</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+Y+X">Y. X. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Wyss%2C+R+A">R. A. Wyss</a>, <a href="/search/nucl-ex?searchtype=author&query=Mengoni%2C+D">D. Mengoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Qiang%2C+Y">Y. Qiang</a>, <a href="/search/nucl-ex?searchtype=author&query=Astier%2C+A">A. Astier</a>, <a href="/search/nucl-ex?searchtype=author&query=Dupont%2C+E">E. Dupont</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Lv%2C+B+F">B. F. Lv</a>, <a href="/search/nucl-ex?searchtype=author&query=Zheng%2C+K+K">K. K. Zheng</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazzacco%2C+D">D. Bazzacco</a>, <a href="/search/nucl-ex?searchtype=author&query=Boso%2C+A">A. Boso</a>, <a href="/search/nucl-ex?searchtype=author&query=Goasduff%2C+A">A. Goasduff</a>, <a href="/search/nucl-ex?searchtype=author&query=Recchia%2C+8+F">8 F. Recchia</a>, <a href="/search/nucl-ex?searchtype=author&query=Testov%2C+D">D. Testov</a>, <a href="/search/nucl-ex?searchtype=author&query=Galtarossa%2C+F">F. Galtarossa</a>, <a href="/search/nucl-ex?searchtype=author&query=Jaworski%2C+G">G. Jaworski</a>, <a href="/search/nucl-ex?searchtype=author&query=Napoli%2C+D+R">D. R. Napoli</a>, <a href="/search/nucl-ex?searchtype=author&query=Riccetto%2C+S">S. Riccetto</a>, <a href="/search/nucl-ex?searchtype=author&query=Siciliano%2C+M">M. Siciliano</a>, <a href="/search/nucl-ex?searchtype=author&query=Valiente-Dobon%2C+J+J">J. J. Valiente-Dobon</a> , et al. (16 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="1904.06931v1-abstract-short" style="display: inline;"> Several new bands have been identified in 130Ba, among which there is one with band-head spin 8+. Its properties are in agreement with the Fermi-aligned 谓h11/2^2 , 7/2+[523] \otimes 9/2-[514] Nilsson configuration. This is the first observation of a two-quasiparticle t-band in the A=130 mass region. The t-band is fed by a dipole band involving two additional h11/2 protons. The odd-spin partners of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.06931v1-abstract-full').style.display = 'inline'; document.getElementById('1904.06931v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.06931v1-abstract-full" style="display: none;"> Several new bands have been identified in 130Ba, among which there is one with band-head spin 8+. Its properties are in agreement with the Fermi-aligned 谓h11/2^2 , 7/2+[523] \otimes 9/2-[514] Nilsson configuration. This is the first observation of a two-quasiparticle t-band in the A=130 mass region. The t-band is fed by a dipole band involving two additional h11/2 protons. The odd-spin partners of the proton and neutron S-bands and the ground-state band at high spins are also newly identified. The observed bands are discussed using several theoretical models, which strongly suggest the coexistence of prolate and oblate shapes polarized by rotation aligned two-proton and two-neutron configurations, as well as prolate collective rotations around axes with different orientations. With the new results, 130Ba presents one of the best and most complete sets of collective excitations that a gamma-soft nucleus can manifest at medium and high spins, revealing a diversity of shapes and rotations for the nuclei in the A = 130 mass region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.06931v1-abstract-full').style.display = 'none'; document.getElementById('1904.06931v1-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 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">8 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/1810.07089">arXiv:1810.07089</a> <span> [<a href="https://arxiv.org/pdf/1810.07089">pdf</a>, <a href="https://arxiv.org/format/1810.07089">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> </div> </div> <p class="title is-5 mathjax"> Half-Lives of Neutron Rich $^{130}$Cd and $^{131}$In </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+R">R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Svensson%2C+C+E">C. E. Svensson</a>, <a href="/search/nucl-ex?searchtype=author&query=Andreoiu%2C+C">C. Andreoiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+G+C">G. C. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernier%2C+N">N. Bernier</a>, <a href="/search/nucl-ex?searchtype=author&query=Bildstein%2C+V">V. Bildstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Bidaman%2C+H">H. Bidaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Boubel%2C+P">P. Boubel</a>, <a href="/search/nucl-ex?searchtype=author&query=Burbadge%2C+C">C. Burbadge</a>, <a href="/search/nucl-ex?searchtype=author&query=Caballero-Folch%2C+R">R. Caballero-Folch</a>, <a href="/search/nucl-ex?searchtype=author&query=Dillmann%2C+I">I. Dillmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunlop%2C+M+R">M. R. Dunlop</a>, <a href="/search/nucl-ex?searchtype=author&query=Evitts%2C+L+J">L. J. Evitts</a>, <a href="/search/nucl-ex?searchtype=author&query=Garcia%2C+F+H">F. H. Garcia</a>, <a href="/search/nucl-ex?searchtype=author&query=Garnsworthy%2C+A+B">A. B. Garnsworthy</a>, <a href="/search/nucl-ex?searchtype=author&query=Garrett%2C+P+E">P. E. Garrett</a>, <a href="/search/nucl-ex?searchtype=author&query=Hackman%2C+G">G. Hackman</a>, <a href="/search/nucl-ex?searchtype=author&query=Hallam%2C+S">S. Hallam</a>, <a href="/search/nucl-ex?searchtype=author&query=Henderson%2C+J">J. Henderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Ilyushkin%2C+S">S. Ilyushkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Jungclaus%2C+A">A. Jungclaus</a>, <a href="/search/nucl-ex?searchtype=author&query=Kr%C3%BCcken%2C+R">R. Kr眉cken</a>, <a href="/search/nucl-ex?searchtype=author&query=Lassen%2C+J">J. Lassen</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">R. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=MacConnachie%2C+E">E. MacConnachie</a> , et al. (18 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="1810.07089v1-abstract-short" style="display: inline;"> The half-lives of isotopes around the $N=82$ shell closure are an important ingredient in astrophysical simulations and strongly influence the magnitude of the second $r$-process abundance peak in the $A\sim130$ region. The most neutron-rich $N=82$ nuclei are not accessible to the current generation of radioactive beam facilities and $r$-process simulations must therefore rely on calculations of t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.07089v1-abstract-full').style.display = 'inline'; document.getElementById('1810.07089v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.07089v1-abstract-full" style="display: none;"> The half-lives of isotopes around the $N=82$ shell closure are an important ingredient in astrophysical simulations and strongly influence the magnitude of the second $r$-process abundance peak in the $A\sim130$ region. The most neutron-rich $N=82$ nuclei are not accessible to the current generation of radioactive beam facilities and $r$-process simulations must therefore rely on calculations of the half-lives of the isotopes involved. Half-life measurements of the experimentally accessible nuclei in this region are important in order to benchmark these calculations. The half-life of $^{130}$Cd is particularly important as it is used to tune the Gamow-Teller quenching in shell-model calculations for the $尾$ decay of other nuclei in this region. In this work, the GRIFFIN $纬$-ray spectrometer at the TRIUMF-ISAC facility was used to measure the half-life of $^{130}_{~48}$Cd$_{82}$ to be $T_{1/2}= 126(4)$ ms. In addition, the half-lives of the three $尾$ decaying states of $^{131}_{~49}$In$_{82}$ were measured to be $T_{1/2}(1/2^-)=328(15)$ ms, $T_{1/2}(9/2^+)=265(8)$ ms, and $T_{1/2}(21/2^+)=323(50)$ ms, respectively, providing an important benchmark for half-life calculations in this region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.07089v1-abstract-full').style.display = 'none'; document.getElementById('1810.07089v1-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">Talk presented CIPANP2018. 9 pages, LaTeX, 5 pdf figures, 1 png figure</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CIPANP2018-Dunlop </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.05043">arXiv:1810.05043</a> <span> [<a href="https://arxiv.org/pdf/1810.05043">pdf</a>, <a href="https://arxiv.org/format/1810.05043">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 - Lattice">hep-lat</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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Nucleon Transversity Distribution at the Physical Pion Mass from Lattice QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+Y">Yu-Sheng Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">Jiunn-Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Jin%2C+L">Luchang Jin</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">Ruizi Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+H">Huey-Wen Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yi-Bo Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+J">Jian-Hui Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhao%2C+Y">Yong Zhao</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="1810.05043v1-abstract-short" style="display: inline;"> We report a state-of-the-art lattice calculation of the isovector quark transversity distribution of the proton at the physical pion mass. Within the framework of large-momentum effective theory (LaMET), we compute the transversity quasi-distributions using clover valence fermions on 2+1+1-flavor (up/down, strange, charm) HISQ-lattice configurations with boosted proton momenta as large as 3.0~GeV.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.05043v1-abstract-full').style.display = 'inline'; document.getElementById('1810.05043v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.05043v1-abstract-full" style="display: none;"> We report a state-of-the-art lattice calculation of the isovector quark transversity distribution of the proton at the physical pion mass. Within the framework of large-momentum effective theory (LaMET), we compute the transversity quasi-distributions using clover valence fermions on 2+1+1-flavor (up/down, strange, charm) HISQ-lattice configurations with boosted proton momenta as large as 3.0~GeV. The relevant lattice matrix elements are nonperturbatively renormalized in regularization-independent momentum-subtraction (RI/MOM) scheme and systematically matched to the physical transversity distribution. With high statistics, large proton momenta and meticulous control of excited-state contamination, we provide the best theoretical prediction for the large-$x$ isovector quark transversity distribution, with better precision than the most recent global analyses of experimental data. Our result also shows that the sea quark asymmetry in the proton transversity distribution is consistent with zero, which has been assumed in all current global analyses. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.05043v1-abstract-full').style.display = 'none'; document.getElementById('1810.05043v1-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 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">10 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MSUHEP-18-019,MIT-CTP/5033 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.02987">arXiv:1809.02987</a> <span> [<a href="https://arxiv.org/pdf/1809.02987">pdf</a>, <a href="https://arxiv.org/ps/1809.02987">ps</a>, <a href="https://arxiv.org/format/1809.02987">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> </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.99.064312">10.1103/PhysRevC.99.064312 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Beta-decay spectroscopy of $^{27}$S </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+L+J">L. J. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+X">X. X. Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+S+Q">S. Q. Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C+J">C. J. Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Jos%C3%A9%2C+J">J. Jos茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J+J">J. J. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z+H">Z. H. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+S">J. S. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+C+X">C. X. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+D+X">D. X. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wu%2C+H+Y">H. Y. Wu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+P+F">P. F. Liang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y+Y">Y. Y. Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lam%2C+Y+H">Y. H. Lam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">P. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F+F">F. F. Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z+H">Z. H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Q">Q. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Z. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J+B">J. B. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+G">J. G. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhong%2C+F+P">F. P. Zhong</a>, <a href="/search/nucl-ex?searchtype=author&query=Wu%2C+C+G">C. G. Wu</a>, <a href="/search/nucl-ex?searchtype=author&query=Luo%2C+D+W">D. W. Luo</a> , et al. (33 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="1809.02987v2-abstract-short" style="display: inline;"> Background: Beta-decay spectroscopy provides valuable nuclear physics input for thermonuclear reaction rates of astrophysical interest and stringent test for shell-model theories far from the stability line. Purpose: The available decay properties of proton drip-line nucleus $^{27}$S is insufficient to constrain the properties of the key resonance in $^{26}$Si$(p,纬)^{27}$P reaction rate and probe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02987v2-abstract-full').style.display = 'inline'; document.getElementById('1809.02987v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.02987v2-abstract-full" style="display: none;"> Background: Beta-decay spectroscopy provides valuable nuclear physics input for thermonuclear reaction rates of astrophysical interest and stringent test for shell-model theories far from the stability line. Purpose: The available decay properties of proton drip-line nucleus $^{27}$S is insufficient to constrain the properties of the key resonance in $^{26}$Si$(p,纬)^{27}$P reaction rate and probe the possible isospin asymmetry. The decay scheme of $^{27}$S is complicated and far from being understood, which has motivated but also presented challenges for our experiment. Method: The $^{27}$S ions were implanted into a double-sided silicon strip detector array surrounded by the high-purity germanium detectors, where the $尾$-delayed protons and $纬$ rays were measured simultaneously. Results: The improved spectroscopic properties including the precise half-life of $^{27}$S, the excitation energies, $尾$-decay branching ratios, log~$ft$ values, and $B$(GT) values for the states of $^{27}$P populated in the $尾$ decay of $^{27}$S were measured and compared to the $^{27}$Mg mirror states and the shell-model calculations. The present work has expanded greatly on the previously established decay scheme of $^{27}$S. Conclusions: The precise proton-separation energy of $^{27}$P, the energy and the ratio between $纬$ and proton partial widths of the $3/2^+$ resonance were obtained, thereby determining the $^{26}$Si$(p,纬)^{27}$P reaction rate based mainly on experimental constraints. The first evidence for the observation of a large isospin asymmetry for the mirror decays of $^{27}$S and $^{27}$Na is also provided. The experimental spectroscopic information can be reproduced by the shell-model calculation taking the weakly bound effect of the proton $1s_{1/2}$ orbit into account. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02987v2-abstract-full').style.display = 'none'; document.getElementById('1809.02987v2-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 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 99, 064312 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.02980">arXiv:1809.02980</a> <span> [<a href="https://arxiv.org/pdf/1809.02980">pdf</a>, <a href="https://arxiv.org/ps/1809.02980">ps</a>, <a href="https://arxiv.org/format/1809.02980">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> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2020.135213">10.1016/j.physletb.2020.135213 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimentally well-constrained masses of $^{27}$P and $^{27}$S: Implications for studies of explosive binary systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+L+J">L. J. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+X+X">X. X. Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Hou%2C+S+Q">S. Q. Hou</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+C+J">C. J. Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Jos%C3%A9%2C+J">J. Jos茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+J">J. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=He%2C+J+J">J. J. He</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Z+H">Z. H. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+S">J. S. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+C+X">C. X. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Herwig%2C+F">F. Herwig</a>, <a href="/search/nucl-ex?searchtype=author&query=Keegans%2C+J">J. Keegans</a>, <a href="/search/nucl-ex?searchtype=author&query=Budner%2C+T">T. Budner</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+D+X">D. X. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Wu%2C+H+Y">H. Y. Wu</a>, <a href="/search/nucl-ex?searchtype=author&query=Liang%2C+P+F">P. F. Liang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y+Y">Y. Y. Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Lam%2C+Y+H">Y. H. Lam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+P">P. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Duan%2C+F+F">F. F. Duan</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+Z+H">Z. H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Hu%2C+Q">Q. Hu</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Z">Z. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%2C+J+B">J. B. Ma</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+J+G">J. G. Wang</a> , et al. (36 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="1809.02980v2-abstract-short" style="display: inline;"> The mass of $^{27}$P was predicted to impact the X-ray burst (XRB) model predictions of burst light curves and the composition of the burst ashes. To address the uncertainties and inconsistencies in the reported $^{27}$P masses in literature, a wealth of information has been extracted from the $尾$-decay spectroscopy of the drip-line nucleus $^{27}$S. We determine the most precise mass excess of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02980v2-abstract-full').style.display = 'inline'; document.getElementById('1809.02980v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.02980v2-abstract-full" style="display: none;"> The mass of $^{27}$P was predicted to impact the X-ray burst (XRB) model predictions of burst light curves and the composition of the burst ashes. To address the uncertainties and inconsistencies in the reported $^{27}$P masses in literature, a wealth of information has been extracted from the $尾$-decay spectroscopy of the drip-line nucleus $^{27}$S. We determine the most precise mass excess of $^{27}$P to date to be $-659(9)$~keV, which is 63~keV (2.3$蟽$) higher than the AME2016 recommended value of $-722(26)$~keV. The experimentally unknown mass excess of $^{27}$S was estimated to be 17030(400)~keV in AME2016, and we constrain this mass to be 17678(77)~keV based on the measured $尾$-delayed two-proton energy. In the temperature region of $(0.06-0.3)$~GK, the $^{26}$Si$(p,纬)^{27}$P reaction rate determined in this work is significantly lower than the rate recommended in the reaction rate libraries, up to two orders of magnitude around 0.1~GK. The impact of these newly determined masses and well-constrained rate on the modeling of the explosive astrophysical scenarios has been explored by hydrodynamic nova and post-processing XRB models. No substantial change was found in the nova contribution to the synthesis of galactic $^{26}$Al or in the XRB energy generation rate, but we found that the calculated abundances of $^{26}$Al and $^{26}$Si at the last stage of XRB are increased by a factor of 2.4. We also conclude that $^{27}$S is not a significant waiting point in the rapid proton capture process. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.02980v2-abstract-full').style.display = 'none'; document.getElementById('1809.02980v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.08917">arXiv:1808.08917</a> <span> [<a href="https://arxiv.org/pdf/1808.08917">pdf</a>, <a href="https://arxiv.org/format/1808.08917">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/10.1038/s41567-019-0494-8">10.1038/s41567-019-0494-8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Polarization and Entanglement in Baryon-Antibaryon Pair Production in Electron-Positron Annihilation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=BESIII+Collaboration"> BESIII Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Ablikim%2C+M">M. Ablikim</a>, <a href="/search/nucl-ex?searchtype=author&query=Achasov%2C+M+N">M. N. Achasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+F+F">F. F. An</a>, <a href="/search/nucl-ex?searchtype=author&query=An%2C+Q">Q. An</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+Y">Y. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Bakina%2C+O">O. Bakina</a>, <a href="/search/nucl-ex?searchtype=author&query=Ferroli%2C+R+B">R. Baldini Ferroli</a>, <a href="/search/nucl-ex?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/nucl-ex?searchtype=author&query=Begzsuren%2C+K">K. Begzsuren</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+D+W">D. W. Bennett</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+J+V">J. V. Bennett</a>, <a href="/search/nucl-ex?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertani%2C+M">M. Bertani</a>, <a href="/search/nucl-ex?searchtype=author&query=Bettoni%2C+D">D. Bettoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchi%2C+F">F. Bianchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Boger%2C+E">E. Boger</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyko%2C+I">I. Boyko</a>, <a href="/search/nucl-ex?searchtype=author&query=Briere%2C+R+A">R. A. Briere</a>, <a href="/search/nucl-ex?searchtype=author&query=Cai%2C+H">H. Cai</a>, <a href="/search/nucl-ex?searchtype=author&query=Cai%2C+X">X. Cai</a> , et al. (444 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1808.08917v1-abstract-short" style="display: inline;"> Using a sample of $1.31\times 10^9$ $J/蠄$ events collected with the BESIII detector, we report the first observation of spin polarization of $螞$ and $\bar螞$ hyperons from the coherent production in the $J/蠄\to螞\bar螞$ decay. We measure the phase between the hadronic form factors to be $螖桅=(42.4\pm0.6\pm0.5)^\circ$. The decay parameters for $螞\to p蟺^-$ ($伪_-$), $\bar螞\to\bar p蟺^+$ ($伪_+$) and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.08917v1-abstract-full').style.display = 'inline'; document.getElementById('1808.08917v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.08917v1-abstract-full" style="display: none;"> Using a sample of $1.31\times 10^9$ $J/蠄$ events collected with the BESIII detector, we report the first observation of spin polarization of $螞$ and $\bar螞$ hyperons from the coherent production in the $J/蠄\to螞\bar螞$ decay. We measure the phase between the hadronic form factors to be $螖桅=(42.4\pm0.6\pm0.5)^\circ$. The decay parameters for $螞\to p蟺^-$ ($伪_-$), $\bar螞\to\bar p蟺^+$ ($伪_+$) and $\bar螞\to\bar n蟺^0$ ($\bar伪_0$) are measured to be $伪_-=0.750\pm0.009\pm0.004$, $伪_+=-0.758\pm0.010\pm0.007$ and $\bar伪_0=-0.692\pm0.016\pm0.006$, respectively. The obtained value of $伪_-$ is higher by $(17\pm 3)\%$ than the current world average. In addition, the $CP$ asymmetry of $-0.006\pm0.012\pm0.007$ is extracted with substantially improved precision. The ratio $\bar伪_0/伪_{+} = 0.913\pm 0.028 \pm 0.012$ is also measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.08917v1-abstract-full').style.display = 'none'; document.getElementById('1808.08917v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 6 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/1807.07431">arXiv:1807.07431</a> <span> [<a href="https://arxiv.org/pdf/1807.07431">pdf</a>, <a href="https://arxiv.org/format/1807.07431">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 - Lattice">hep-lat</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> <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/PhysRevLett.121.242003">10.1103/PhysRevLett.121.242003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Proton Isovector Helicity Distribution on the Lattice at Physical Pion Mass </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+H">Huey-Wen Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">Jiunn-Wei Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">Xiangdong Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Jin%2C+L">Luchang Jin</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">Ruizi Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+Y">Yu-Sheng Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Yang%2C+Y">Yi-Bo Yang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+J">Jian-Hui Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhao%2C+Y">Yong Zhao</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="1807.07431v2-abstract-short" style="display: inline;"> We present a state-of-the-art calculation of the isovector quark helicity Bjorken-$x$ distribution in the proton using lattice-QCD ensembles at the physical pion mass. We compute quasi-distributions at proton momenta $P_z \in \{2.2, 2.6, 3.0\}$~GeV on the lattice, and match them systematically to the physical parton distribution using large-momentum effective theory (LaMET). We reach an unpreceden… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.07431v2-abstract-full').style.display = 'inline'; document.getElementById('1807.07431v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.07431v2-abstract-full" style="display: none;"> We present a state-of-the-art calculation of the isovector quark helicity Bjorken-$x$ distribution in the proton using lattice-QCD ensembles at the physical pion mass. We compute quasi-distributions at proton momenta $P_z \in \{2.2, 2.6, 3.0\}$~GeV on the lattice, and match them systematically to the physical parton distribution using large-momentum effective theory (LaMET). We reach an unprecedented precision through high statistics in simulations, large-momentum proton matrix elements, and control of excited-state contamination. The resulting distribution with combined statistical and systematic errors is in agreement with the latest phenomenological analysis of the spin-dependent experimental data; in particular, $螖\bar{u}(x)>螖\bar{d}(x)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.07431v2-abstract-full').style.display = 'none'; document.getElementById('1807.07431v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">6 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MSUHEP-18-013, MIT-CTP/5032 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett. 121 (2018) no.24, 242003 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1403.3897">arXiv:1403.3897</a> <span> [<a href="https://arxiv.org/pdf/1403.3897">pdf</a>, <a href="https://arxiv.org/ps/1403.3897">ps</a>, <a href="https://arxiv.org/format/1403.3897">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> </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/10.1088/1674-1137/39/1/014001">10.1088/1674-1137/39/1/014001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Forward-backward multiplicity correlations of target fragments in nucleus-emulsion collisions at a few hundred MeV/nucleon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+D">Dong-Hai Zhang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+Y">Yan-Ling Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+G">Guo-Rong Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+W">Wang-Dong Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+Q">Qing Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Yao%2C+J">Ji-Jie Yao</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhou%2C+J">Jian-Guo Zhou</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+R">Rong Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+J">Jun-Sheng Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+H">Hui-Ling Li</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1403.3897v1-abstract-short" style="display: inline;"> The forward-backward multiplicity and correlations of target evaporated fragment(black track particle) and target recoiled proton(grey track particle) emitted in 150 A MeV He-emulsion, 290 A MeV C-emulsion, 400 A MeV C-emulsion, 400 A MeV Ne-emulsion and 500 A MeV Fe-emulsion interactions are investigated. It is found that the forward and backward averaged multiplicity of grey, black and heavily i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.3897v1-abstract-full').style.display = 'inline'; document.getElementById('1403.3897v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1403.3897v1-abstract-full" style="display: none;"> The forward-backward multiplicity and correlations of target evaporated fragment(black track particle) and target recoiled proton(grey track particle) emitted in 150 A MeV He-emulsion, 290 A MeV C-emulsion, 400 A MeV C-emulsion, 400 A MeV Ne-emulsion and 500 A MeV Fe-emulsion interactions are investigated. It is found that the forward and backward averaged multiplicity of grey, black and heavily ionized track particle increase with the increase of target size. Averaged multiplicity of forward black track particle, backward black track particle, and backward grey track particle do not depend on the projectile size and energy, but the averaged multiplicity of forward grey track particle increases with increase of projectile size and energy. The backward grey track particle multiplicity distribution follows an exponential decay law and the decay constant decreases with increase of target size. The backward-forward multiplicity correlations follow linear law which is independent of the projectile size and energy, and the saturation effect is observed in some heavy target data sets. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1403.3897v1-abstract-full').style.display = 'none'; document.getElementById('1403.3897v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 March, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">18 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/1108.1713">arXiv:1108.1713</a> <span> [<a href="https://arxiv.org/pdf/1108.1713">pdf</a>, <a href="https://arxiv.org/ps/1108.1713">ps</a>, <a href="https://arxiv.org/format/1108.1713">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Gluons and the quark sea at high energies: distributions, polarization, tomography </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+D">D. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Diehl%2C+M">M. Diehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Milner%2C+R">R. Milner</a>, <a href="/search/nucl-ex?searchtype=author&query=Venugopalan%2C+R">R. Venugopalan</a>, <a href="/search/nucl-ex?searchtype=author&query=Vogelsang%2C+W">W. Vogelsang</a>, <a href="/search/nucl-ex?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E">E. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkardt%2C+M">M. Burkardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Guzey%2C+V">V. Guzey</a>, <a href="/search/nucl-ex?searchtype=author&query=Hasch%2C+D">D. Hasch</a>, <a href="/search/nucl-ex?searchtype=author&query=Kumar%2C+K">K. Kumar</a>, <a href="/search/nucl-ex?searchtype=author&query=Lamont%2C+M+A+C">M. A. C. Lamont</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+Y">Y. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Marciano%2C+W+J">W. J. Marciano</a>, <a href="/search/nucl-ex?searchtype=author&query=Marquet%2C+C">C. Marquet</a>, <a href="/search/nucl-ex?searchtype=author&query=Sabatie%2C+F">F. Sabatie</a>, <a href="/search/nucl-ex?searchtype=author&query=Stratmann%2C+M">M. Stratmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+F">F. Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Abeyratne%2C+S">S. Abeyratne</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekhin%2C+S">S. Alekhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Anselmino%2C+M">M. Anselmino</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a> , et al. (164 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="1108.1713v2-abstract-short" style="display: inline;"> This report is based on a ten-week program on "Gluons and the quark sea at high-energies", which took place at the Institute for Nuclear Theory in Seattle in Fall 2010. The principal aim of the program was to develop and sharpen the science case for an Electron-Ion Collider (EIC), a facility that will be able to collide electrons and positrons with polarized protons and with light to heavy nuclei… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1108.1713v2-abstract-full').style.display = 'inline'; document.getElementById('1108.1713v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1108.1713v2-abstract-full" style="display: none;"> This report is based on a ten-week program on "Gluons and the quark sea at high-energies", which took place at the Institute for Nuclear Theory in Seattle in Fall 2010. The principal aim of the program was to develop and sharpen the science case for an Electron-Ion Collider (EIC), a facility that will be able to collide electrons and positrons with polarized protons and with light to heavy nuclei at high energies, offering unprecedented possibilities for in-depth studies of quantum chromodynamics. This report is organized around four major themes: i) the spin and flavor structure of the proton, ii) three-dimensional structure of nucleons and nuclei in momentum and configuration space, iii) QCD matter in nuclei, and iv) Electroweak physics and the search for physics beyond the Standard Model. Beginning with an executive summary, the report contains tables of key measurements, chapter overviews for each of the major scientific themes, and detailed individual contributions on various aspects of the scientific opportunities presented by an EIC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1108.1713v2-abstract-full').style.display = 'none'; document.getElementById('1108.1713v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 August, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">547 pages, A report on the joint BNL/INT/Jlab program on the science case for an Electron-Ion Collider, September 13 to November 19, 2010, Institute for Nuclear Theory, Seattle; v2 with minor changes, matches printed version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INT-PUB-11-034, BNL-96164-2011, JLAB-THY-11-1373 </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 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