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aria-current="page">4 </a> </li> </ul> </nav> <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/2501.18443">arXiv:2501.18443</a> <span> [<a href="https://arxiv.org/pdf/2501.18443">pdf</a>, <a href="https://arxiv.org/format/2501.18443">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"> Updated analysis of neutron magnetic form factor and the nucleon transverse densities </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">T. J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Jayne%2C+J">J. Jayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Miller%2C+G+A">G. A. Miller</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z">Z. Ye</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="2501.18443v1-abstract-short" style="display: inline;"> We provide an updated global extraction of the neutron magnetic form factor, including new extractions from $^3$H-$^3$He comparisons at Jefferson Lab. Our new global fit addresses discrepancies between previous data sets at modest momentum transfer by separating the uncertainties from world data into normalization and uncorrelated uncertainties. We use this updated global fit, along with previous… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.18443v1-abstract-full').style.display = 'inline'; document.getElementById('2501.18443v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.18443v1-abstract-full" style="display: none;"> We provide an updated global extraction of the neutron magnetic form factor, including new extractions from $^3$H-$^3$He comparisons at Jefferson Lab. Our new global fit addresses discrepancies between previous data sets at modest momentum transfer by separating the uncertainties from world data into normalization and uncorrelated uncertainties. We use this updated global fit, along with previous fits for the other form factors, to extract the neutron and proton transverse charge and magnetization densities and their uncertainties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.18443v1-abstract-full').style.display = 'none'; document.getElementById('2501.18443v1-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NT@UW-25-1 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.13316">arXiv:2501.13316</a> <span> [<a href="https://arxiv.org/pdf/2501.13316">pdf</a>, <a href="https://arxiv.org/format/2501.13316">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"> Investigation of Medium Modifications to $^{12}$C Structure Functions in the Resonance Region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Albayrak%2C+I">I. Albayrak</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmidouch%2C+A">A. Ahmidouch</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodek%2C+A">A. Bodek</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosted%2C+P">P. Bosted</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradford%2C+R">R. Bradford</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E">E. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruell%2C+A">A. Bruell</a>, <a href="/search/nucl-ex?searchtype=author&query=Butuceanu%2C+C">C Butuceanu</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Coleman%2C+S+J">S. J. Coleman</a>, <a href="/search/nucl-ex?searchtype=author&query=Commisso%2C+M">M. Commisso</a>, <a href="/search/nucl-ex?searchtype=author&query=Connell%2C+S+H">S. H. Connell</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=Danagoulian%2C+S">S. Danagoulian</a>, <a href="/search/nucl-ex?searchtype=author&query=Daniel%2C+A">A. Daniel</a>, <a href="/search/nucl-ex?searchtype=author&query=Day%2C+D+B">D. B. Day</a>, <a href="/search/nucl-ex?searchtype=author&query=Dhamija%2C+S">S. Dhamija</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunne%2C+J">J. Dunne</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Gasparian%2C+A">A. Gasparian</a> , et al. (53 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2501.13316v2-abstract-short" style="display: inline;"> We present results from a high precision experimental study of the nuclear modification of the longitudinal ($F_L$) to transverse ($F_1$) structure function ratio for bound nucleons in the resonance region. The inclusive electron scattering cross sections were measured in Jefferson Lab Experimental Hall C on carbon and deuterium nuclei for a large range of kinematics, allowing for separations of t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.13316v2-abstract-full').style.display = 'inline'; document.getElementById('2501.13316v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.13316v2-abstract-full" style="display: none;"> We present results from a high precision experimental study of the nuclear modification of the longitudinal ($F_L$) to transverse ($F_1$) structure function ratio for bound nucleons in the resonance region. The inclusive electron scattering cross sections were measured in Jefferson Lab Experimental Hall C on carbon and deuterium nuclei for a large range of kinematics, allowing for separations of the longitudinal and transverse structure functions to be performed at a range of four-momentum transfer values $0.5 \le Q^2 \le$ 3.75 GeV$^2$. In contrast to the significant body of measurements of the nuclear modification of the $F_2$ structure function in the deep inelastic scattering region, there is very little on $F_L$ and $R = F_L / 2xF_1$ in the region of the nucleon resonances. In this paper we present measurements of the nuclear effect on $R$ for $^{12}$C ($R_C$) relative to deuterium ($R_D$). These results indicate regions in which in $R_C>R_D$, requiring that the nuclear modifications be different in all three structure functions, $F_2$, $F_1$ and $F_L$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.13316v2-abstract-full').style.display = 'none'; document.getElementById('2501.13316v2-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 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">to be published in PRL</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2411.05201">arXiv:2411.05201</a> <span> [<a href="https://arxiv.org/pdf/2411.05201">pdf</a>, <a href="https://arxiv.org/ps/2411.05201">ps</a>, <a href="https://arxiv.org/format/2411.05201">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"> High precision measurements of the proton elastic electromagnetic form factors and their ratio at $Q^2$ = 0.50, 2.64, 3.20, and 4.10 GeV$^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Qattan%2C+I+A">I. A. Qattan</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Baker%2C+O+K">O. K. Baker</a>, <a href="/search/nucl-ex?searchtype=author&query=Beams%2C+R">R. Beams</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E+J">E. J. Brash</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=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayou%2C+O">O. Gayou</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Hansen%2C+J+-">J. -O. Hansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Higinbotham%2C+D+W">D. W. Higinbotham</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</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=Ibrahim%2C+H">H. Ibrahim</a>, <a href="/search/nucl-ex?searchtype=author&query=Jisonna%2C+L">L. Jisonna</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=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kinney%2C+E">E. Kinney</a>, <a href="/search/nucl-ex?searchtype=author&query=Kumbartzki%2C+G+J">G. J. Kumbartzki</a>, <a href="/search/nucl-ex?searchtype=author&query=Lung%2C+A">A. Lung</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="2411.05201v1-abstract-short" style="display: inline;"> The advent of high-intensity, high-polarization electron beams led to significantly improved measurements of the ratio of the proton's charge to electric form factors, GEp/GMp. However, high-$Q^2$ measurements yielded significant disagreement with extractions based on unpolarized scattering, raising questions about the reliability of the measurements and consistency of the techniques. Jefferson La… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05201v1-abstract-full').style.display = 'inline'; document.getElementById('2411.05201v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.05201v1-abstract-full" style="display: none;"> The advent of high-intensity, high-polarization electron beams led to significantly improved measurements of the ratio of the proton's charge to electric form factors, GEp/GMp. However, high-$Q^2$ measurements yielded significant disagreement with extractions based on unpolarized scattering, raising questions about the reliability of the measurements and consistency of the techniques. Jefferson Lab experiment E01-001 was designed to provide a high-precision extraction of GEp/GMp from unpolarized cross section measurements using a modified version of the Rosenbluth technique to allow for a more precise comparison with polarization data. Conventional Rosenbluth separations detect the scattered electron which requires comparisons of measurements with very different detected electron energy and rate for electrons at different angles. Our Super-Rosenbluth measurement detected the struck proton, rather than the scattered electron, to extract the cross section. This yielded a fixed momentum for the detected particle and dramatically reduced cross section variation, reducing rate- and momentum-dependent corrections and uncertainties. We measure the cross section vs angle with high relative precision, allowing for extremely precise extractions of GEp/GMp at $Q^2$ = 2.64, 3.20, and 4.10 GeV$^2$. Our results are consistent with traditional extractions but with much smaller corrections and systematic uncertainties, comparable to the uncertainties from polarization measurements. Our data confirm the discrepancy between Rosenbluth and polarization extractions of the proton form factor ratio using an improved Rosenbluth extraction that yields smaller and less-correlated uncertainties than typical of previous Rosenbluth extractions. We compare our results to calculations of two-photon exchange effects and find that the observed discrepancy can be relatively well explained by such effects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.05201v1-abstract-full').style.display = 'none'; document.getElementById('2411.05201v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">32 pages, 21 figures. arXiv admin note: text overlap with arXiv:nucl-ex/0610006</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.12099">arXiv:2410.12099</a> <span> [<a href="https://arxiv.org/pdf/2410.12099">pdf</a>, <a href="https://arxiv.org/ps/2410.12099">ps</a>, <a href="https://arxiv.org/format/2410.12099">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"> The EMC Effect of Tritium and Helium-3 from the JLab MARATHON Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Aljawrneh%2C+B+S">B. S. Aljawrneh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</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=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</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=Blyth%2C+D">D. Blyth</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bulumulla%2C+D">D. Bulumulla</a>, <a href="/search/nucl-ex?searchtype=author&query=Butler%2C+J">J. Butler</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Carmignotto%2C+M">M. Carmignotto</a> , et al. (109 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="2410.12099v1-abstract-short" style="display: inline;"> Measurements of the EMC effect in the tritium and helium-3 mirror nuclei are reported. The data were obtained by the MARATHON Jefferson Lab experiment, which performed deep inelastic electron scattering from deuterium and the three-body nuclei, using a cryogenic gas target system and the High Resolution Spectrometers of the Hall A Facility of the Lab. The data cover the Bjorken $x$ range from 0.20… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12099v1-abstract-full').style.display = 'inline'; document.getElementById('2410.12099v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.12099v1-abstract-full" style="display: none;"> Measurements of the EMC effect in the tritium and helium-3 mirror nuclei are reported. The data were obtained by the MARATHON Jefferson Lab experiment, which performed deep inelastic electron scattering from deuterium and the three-body nuclei, using a cryogenic gas target system and the High Resolution Spectrometers of the Hall A Facility of the Lab. The data cover the Bjorken $x$ range from 0.20 to 0.83, corresponding to a squared four-momentum transfer $Q^2$ range from 2.7 to $11.9\gevsq$, and to an invariant mass $W$ of the final hadronic state greater than 1.84 GeV/${\it c}^2$. The tritium EMC effect measurement is the first of its kind. The MARATHON experimental results are compared to results from previous measurements by DESY-HERMES and JLab-Hall C experiments, as well as with few-body theoretical predictions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.12099v1-abstract-full').style.display = 'none'; document.getElementById('2410.12099v1-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, 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">arXiv admin note: text overlap with arXiv:2104.05850</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2406.11459">arXiv:2406.11459</a> <span> [<a href="https://arxiv.org/pdf/2406.11459">pdf</a>, <a href="https://arxiv.org/format/2406.11459">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/10.1016/j.physletb.2024.139032">10.1016/j.physletb.2024.139032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of $J/蠄$ and $蠄\left(2S\right)$ production in $p+p$ and $p+d$ interactions at 120 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Leung%2C+C+H">C. H. Leung</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakano%2C+K">K. Nakano</a>, <a href="/search/nucl-ex?searchtype=author&query=Nawarathne%2C+D">D. Nawarathne</a>, <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Wuerfel%2C+N">N. Wuerfel</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+L">C. L. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</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=Geesaman%2C+D+F">D. F. Geesaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Goto%2C+Y">Y. Goto</a>, <a href="/search/nucl-ex?searchtype=author&query=Guo%2C+R">R. Guo</a>, <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">T. J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hossain%2C+M+F">M. F. Hossain</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="2406.11459v3-abstract-short" style="display: inline;"> We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/蠄$ and $蠄\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced fr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.11459v3-abstract-full').style.display = 'inline'; document.getElementById('2406.11459v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.11459v3-abstract-full" style="display: none;"> We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/蠄$ and $蠄\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cross sections are in good agreement with theoretical calculations based on the nonrelativistic QCD (NRQCD) using the long-distance matrix elements deduced from a recent global analysis of proton- and pion-induced charmonium production data. The $蟽_{蠄\left(2S\right)} / 蟽_{J/蠄}$ cross section ratios are found to increase as $x_F$ increases, indicating that the $q \bar{q}$ annihilation process has larger contributions in the $蠄\left(2S\right)$ production than the $J/蠄$ production. The $蟽_{pd}/2蟽_{pp}$ cross section ratios are observed to be significantly different for the Drell-Yan process and $J/蠄$ production, reflecting their different production mechanisms. We find that the $蟽_{pd}/2蟽_{pp}$ ratios for $J/蠄$ production at the forward $x_F$ region are sensitive to the $\bar{d}/ \bar{u}$ flavor asymmetry of the proton sea, analogous to the Drell-Yan process. The transverse momentum ($p_T$) distributions for $J/蠄$ and $蠄\left(2S\right)$ production are also presented and compared with data collected at higher center-of-mass energies. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.11459v3-abstract-full').style.display = 'none'; document.getElementById('2406.11459v3-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 17 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 7 figures, with 1 page of supplementary material which has 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 858, 139032 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.16235">arXiv:2404.16235</a> <span> [<a href="https://arxiv.org/pdf/2404.16235">pdf</a>, <a href="https://arxiv.org/format/2404.16235">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> <p class="title is-5 mathjax"> Inclusive studies of two- and three-nucleon short-range correlations in $^3$H and $^3$He </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">R. Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=Kurbany%2C+L">L. Kurbany</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</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=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=Barrow%2C+J">J. Barrow</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</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=Bulumulla%2C+D">D. Bulumulla</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Castellanos%2C+J">J. Castellanos</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+J">J-P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chrisman%2C+D">D. Chrisman</a> , et al. (91 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.16235v1-abstract-short" style="display: inline;"> Inclusive electron scattering at carefully chosen kinematics can isolate scattering from short-range correlations (SRCs), produced through hard, short-distance interactions of nucleons in the nucleus. Because the two-nucleon (2N) SRCs arise from the same N-N interaction in all nuclei, the cross section in the SRC-dominated regime is identical up to an overall scaling factor, and the A/2H cross sec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.16235v1-abstract-full').style.display = 'inline'; document.getElementById('2404.16235v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.16235v1-abstract-full" style="display: none;"> Inclusive electron scattering at carefully chosen kinematics can isolate scattering from short-range correlations (SRCs), produced through hard, short-distance interactions of nucleons in the nucleus. Because the two-nucleon (2N) SRCs arise from the same N-N interaction in all nuclei, the cross section in the SRC-dominated regime is identical up to an overall scaling factor, and the A/2H cross section ratio is constant in this region. This scaling behavior has been used to identify SRC dominance and to map out the contribution of SRCs for a wide range of nuclei. We examine this scaling behavior at lower momentum transfers using new data on $^2$H, $^3$H, and $^3$He which show that the scaling region is larger than in heavy nuclei. Based on the improved scaling, especially for $^3$H/$^3$He, we examine the ratios at kinematics where three-nucleon SRCs may play an important role. The data for the largest initial nucleon momenta are consistent with isolation of scattering from 3N-SRCs, and suggest that the very-highest momentum nucleons in $^3$He have a nearly isospin-independent momentum configuration, or a small enhancement of the proton distribution. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.16235v1-abstract-full').style.display = 'none'; document.getElementById('2404.16235v1-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 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.17147">arXiv:2402.17147</a> <span> [<a href="https://arxiv.org/pdf/2402.17147">pdf</a>, <a href="https://arxiv.org/format/2402.17147">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"> On the significance of radiative corrections on measurements of the EMC effect </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Moran%2C+S">S. Moran</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmookler%2C+B">B. Schmookler</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="2402.17147v1-abstract-short" style="display: inline;"> Analyzing global data on the EMC effect, which denotes differences in parton distribution functions in nuclei compared to unbound nucleons, reveals tensions. Precise measurements at Jefferson Lab, studying both x and A dependence, show systematic discrepancies among experiments, making the extraction of the A dependence of the EMC effect sensitive to the selection of datasets. By comparing various… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.17147v1-abstract-full').style.display = 'inline'; document.getElementById('2402.17147v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.17147v1-abstract-full" style="display: none;"> Analyzing global data on the EMC effect, which denotes differences in parton distribution functions in nuclei compared to unbound nucleons, reveals tensions. Precise measurements at Jefferson Lab, studying both x and A dependence, show systematic discrepancies among experiments, making the extraction of the A dependence of the EMC effect sensitive to the selection of datasets. By comparing various methods and assumptions used to calculate radiative corrections, we have identified differences that, while not large, significantly impact the EMC ratios and show that using a consistent radiative correction procedure resolves this discrepancy, leading to a more coherent global picture, and allowing for a more robust extraction of the EMC effect for infinite nuclear matter. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.17147v1-abstract-full').style.display = 'none'; document.getElementById('2402.17147v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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, 12 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2312.13499">arXiv:2312.13499</a> <span> [<a href="https://arxiv.org/pdf/2312.13499">pdf</a>, <a href="https://arxiv.org/format/2312.13499">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> <p class="title is-5 mathjax"> Impact of the MARATHON data on \texorpdfstring{$F_{2n}/F_{2p}$}{F2n/F2p} and off-shell effects in light nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">T. J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</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="2312.13499v1-abstract-short" style="display: inline;"> The neutron structure function, $F_{2n}$, has historically been extracted from measurements of the deuteron structure function, but our understanding of the nuclear effects on the bound proton and neutron limits the extraction of $F_{2n}$. The MARATHON collaboration recently extracted $F_{2n}$ from the comparison of $^3$H and $^3$He targets, where the nuclear effects are larger but nearly identica… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13499v1-abstract-full').style.display = 'inline'; document.getElementById('2312.13499v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2312.13499v1-abstract-full" style="display: none;"> The neutron structure function, $F_{2n}$, has historically been extracted from measurements of the deuteron structure function, but our understanding of the nuclear effects on the bound proton and neutron limits the extraction of $F_{2n}$. The MARATHON collaboration recently extracted $F_{2n}$ from the comparison of $^3$H and $^3$He targets, where the nuclear effects are larger but nearly identical, yielding a precise extraction of $F_{2n}/F_{2p}$. This precise extraction can then be compared to deuteron extractions, providing important constraints on the nuclear effects in the deuteron. To ensure that this comparison is not biased by the specific model of nuclear effects used by MARATHON, we examine a range of models of the nuclear effects to obtain a more conservative, but more model-independent, extraction of $F_{2n}/F_{2p}$ for comparison with deuteron extractions. Even with the more conservative approach, the comparison suggests the need for significant off-shell corrections or other nuclear effects, beyond those include in most calculations, even for the weakly-bound deuteron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2312.13499v1-abstract-full').style.display = 'none'; document.getElementById('2312.13499v1-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 December, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 4 figures. Extended descriptions of figures in appendix</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.03963">arXiv:2309.03963</a> <span> [<a href="https://arxiv.org/pdf/2309.03963">pdf</a>, <a href="https://arxiv.org/format/2309.03963">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"> Searching for three-nucleon short-range correlations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fomin%2C+N">Nadia Fomin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">Shujie 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="2309.03963v1-abstract-short" style="display: inline;"> Electron scattering measurements from high-momentum nucleons in nuclei at SLAC and Jefferson Lab (JLab) have shown that these nucleons are generally associated with two-nucleon short-range correlations (2N-SRCs). These SRCs are formed when two nucleons in the nucleus interact at short distance via the strong tensor attraction or repulsive core of the NN potential. A series of measurements at JLab… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.03963v1-abstract-full').style.display = 'inline'; document.getElementById('2309.03963v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.03963v1-abstract-full" style="display: none;"> Electron scattering measurements from high-momentum nucleons in nuclei at SLAC and Jefferson Lab (JLab) have shown that these nucleons are generally associated with two-nucleon short-range correlations (2N-SRCs). These SRCs are formed when two nucleons in the nucleus interact at short distance via the strong tensor attraction or repulsive core of the NN potential. A series of measurements at JLab have mapped out the A dependence and isospin dependence of 2N-SRCs, and have begun to map out their momentum structure. However, we do not yet know if 3N-SRCs, similar high-momentum configurations of three nucleons, play an important role in nuclei. We summarize here previous attempts to isolate 3N-SRCs, go over the limitations of these previous attempts, and discuss the present and near-term prospects for searching for 3N-SRCs, mapping out their A dependence in nuclei, and constraining their isospin and momentum structure. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.03963v1-abstract-full').style.display = 'none'; document.getElementById('2309.03963v1-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 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/2306.09360">arXiv:2306.09360</a> <span> [<a href="https://arxiv.org/pdf/2306.09360">pdf</a>, <a href="https://arxiv.org/format/2306.09360">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> <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"> Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+D">D. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Akondi%2C+C+S">C. S. Akondi</a>, <a href="/search/nucl-ex?searchtype=author&query=Akopov%2C+N">N. Akopov</a>, <a href="/search/nucl-ex?searchtype=author&query=Albaladejo%2C+M">M. Albaladejo</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Albrecht%2C+M">M. Albrecht</a>, <a href="/search/nucl-ex?searchtype=author&query=Almeida-Zamora%2C+B">B. Almeida-Zamora</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Androi%C4%87%2C+D">D. Androi膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+D+S">D. S. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Avagyan%2C+H">H. Avagyan</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=Bacchetta%2C+A">A. Bacchetta</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=Baltzell%2C+N">N. Baltzell</a>, <a href="/search/nucl-ex?searchtype=author&query=Barion%2C+L">L. Barion</a> , et al. (419 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2306.09360v2-abstract-short" style="display: inline;"> This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of workshops conducted between March 2022 and April 2023. With a track record of over 25 years in delivering the world's most intense and precise multi-GeV electron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.09360v2-abstract-full').style.display = 'inline'; document.getElementById('2306.09360v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.09360v2-abstract-full" style="display: none;"> This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a community effort, incorporating insights from a series of workshops conducted between March 2022 and April 2023. With a track record of over 25 years in delivering the world's most intense and precise multi-GeV electron beams, CEBAF's potential for a higher energy upgrade presents a unique opportunity for an innovative nuclear physics program, which seamlessly integrates a rich historical background with a promising future. The proposed physics program encompass a diverse range of investigations centered around the nonperturbative dynamics inherent in hadron structure and the exploration of strongly interacting systems. It builds upon the exceptional capabilities of CEBAF in high-luminosity operations, the availability of existing or planned Hall equipment, and recent advancements in accelerator technology. The proposed program cover various scientific topics, including Hadron Spectroscopy, Partonic Structure and Spin, Hadronization and Transverse Momentum, Spatial Structure, Mechanical Properties, Form Factors and Emergent Hadron Mass, Hadron-Quark Transition, and Nuclear Dynamics at Extreme Conditions, as well as QCD Confinement and Fundamental Symmetries. Each topic highlights the key measurements achievable at a 22 GeV CEBAF accelerator. Furthermore, this document outlines the significant physics outcomes and unique aspects of these programs that distinguish them from other existing or planned facilities. In summary, this document provides an exciting rationale for the energy upgrade of CEBAF to 22 GeV, outlining the transformative scientific potential that lies within reach, and the remarkable opportunities it offers for advancing our understanding of hadron physics and related fundamental phenomena. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.09360v2-abstract-full').style.display = 'none'; document.getElementById('2306.09360v2-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 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Updates to the list of authors; Preprint number changed from theory to experiment; Updates to sections 4 and 6, including additional figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-23-3840 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.13770">arXiv:2304.13770</a> <span> [<a href="https://arxiv.org/pdf/2304.13770">pdf</a>, <a href="https://arxiv.org/ps/2304.13770">ps</a>, <a href="https://arxiv.org/format/2304.13770">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"> A novel measurement of the neutron magnetic form factor from A=3 mirror nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+S+N">S. N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</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=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=Barrow%2C+J">J. Barrow</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</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=Castellanos%2C+J">J. Castellanos</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+J">J-P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chrisman%2C+D">D. Chrisman</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Clarke%2C+C">C. Clarke</a>, <a href="/search/nucl-ex?searchtype=author&query=Covrig%2C+S">S. Covrig</a> , et al. (81 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2304.13770v2-abstract-short" style="display: inline;"> The electromagnetic form factors of the proton and neutron encode information on the spatial structure of their charge and magnetization distributions. While measurements of the proton are relatively straightforward, the lack of a free neutron target makes measurements of the neutron's electromagnetic structure more challenging and more sensitive to experimental or model-dependent uncertainties. V… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.13770v2-abstract-full').style.display = 'inline'; document.getElementById('2304.13770v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.13770v2-abstract-full" style="display: none;"> The electromagnetic form factors of the proton and neutron encode information on the spatial structure of their charge and magnetization distributions. While measurements of the proton are relatively straightforward, the lack of a free neutron target makes measurements of the neutron's electromagnetic structure more challenging and more sensitive to experimental or model-dependent uncertainties. Various experiments have attempted to extract the neutron form factors from scattering from the neutron in deuterium, with different techniques providing different, and sometimes large, systematic uncertainties. We present results from a novel measurement of the neutron magnetic form factor using quasielastic scattering from the mirror nuclei $^3$H and $^3$He, where the nuclear effects are larger than for deuterium but expected to largely cancel in the cross-section ratios. We extracted values of the neutron magnetic form factor for low-to-modest momentum transfer, $0.6<Q^2<2.9$ GeV$^2$, where existing measurements give inconsistent results. The precision and $Q^2$ range of this data allow for a better understanding of the current world's data, and suggest a path toward further improvement of our overall understanding of the neutron's magnetic form factor. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.13770v2-abstract-full').style.display = 'none'; document.getElementById('2304.13770v2-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 May, 2024; <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">Journal ref:</span> Phys. Rev. Lett. 132, 162501 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.09998">arXiv:2304.09998</a> <span> [<a href="https://arxiv.org/pdf/2304.09998">pdf</a>, <a href="https://arxiv.org/format/2304.09998">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"> The Jefferson Lab tritium program of nucleon and nuclear structure measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">Reynier Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=Hague%2C+T+J">Tyler J. Hague</a>, <a href="/search/nucl-ex?searchtype=author&query=Kurbany%2C+L">Leiqaa Kurbany</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">Shujie Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Meekins%2C+D">David Meekins</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+N">Nathaly Santiesteban</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="2304.09998v1-abstract-short" style="display: inline;"> A series of experiments were performed in Hall A of Jefferson Lab in 2018 that used a novel tritium and helium-3 target system. These experiments took advantage of the isospin symmetry of these mirror nuclei to make precise measurements of isospin dependence in both nucleon and nuclear structure. We summarize here the design and properties of these cells, the physics measurements that have been pu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.09998v1-abstract-full').style.display = 'inline'; document.getElementById('2304.09998v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.09998v1-abstract-full" style="display: none;"> A series of experiments were performed in Hall A of Jefferson Lab in 2018 that used a novel tritium and helium-3 target system. These experiments took advantage of the isospin symmetry of these mirror nuclei to make precise measurements of isospin dependence in both nucleon and nuclear structure. We summarize here the design and properties of these cells, the physics measurements that have been published, and results currently under analysis from this program. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.09998v1-abstract-full').style.display = 'none'; document.getElementById('2304.09998v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 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">16 pages, 10 figures, submitted to the European Physical Journal A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.04622">arXiv:2304.04622</a> <span> [<a href="https://arxiv.org/pdf/2304.04622">pdf</a>, <a href="https://arxiv.org/format/2304.04622">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"> PVEMC: Isolating the flavor-dependent EMC effect using parity-violating inelastic scattering in SoLID </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Beminiwattha%2C+R">Rakitha Beminiwattha</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D+J">David J. Gaskell</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="2304.04622v2-abstract-short" style="display: inline;"> In order to better understand the EMC effect, we propose a clean and precise measurement of the flavor dependence of the EMC effect using parity-violating deep inelastic scattering on a $^{48}$Ca target. This measurement will provide an extremely sensitive test for flavor dependence in the modification of nuclear parton distribution functions (PDFs) for neutron-rich nuclei. A measurement of the fl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.04622v2-abstract-full').style.display = 'inline'; document.getElementById('2304.04622v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.04622v2-abstract-full" style="display: none;"> In order to better understand the EMC effect, we propose a clean and precise measurement of the flavor dependence of the EMC effect using parity-violating deep inelastic scattering on a $^{48}$Ca target. This measurement will provide an extremely sensitive test for flavor dependence in the modification of nuclear parton distribution functions (PDFs) for neutron-rich nuclei. A measurement of the flavor dependence will provide new and vital information and help to explain nucleon modification at the quark level. In addition to helping understand the origin of the EMC effect, a flavor-dependent nuclear pdf modification could significantly impact a range of processes, including neutrino-nucleus scattering, nuclear Drell-Yan processes, and e-A observables at the Electron-Ion Collider. The parity-violating asymmetry APV from $^{48}$Ca using an 11 GeV beam at $80\ 渭A$ will be measured using the SoLID detector in its PVDIS configuration. In 68 days of data taking, we will reach $0.7-1.3\%$ statistical precision for $0.2<x<0.7$ with $0.6-0.7\% $ systematic uncertainties. The goal is to make the first direct measurement of the flavor dependence of the EMC effect. The precision of the measurement will allow for quantification of the flavor-dependent effects, greatly improving our ability to differentiate between models of the EMC effect and constraining the u- and d-quark contributions in neutron rich nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.04622v2-abstract-full').style.display = 'none'; document.getElementById('2304.04622v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 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">8 pages, 5 figures and one table. Proposal submitted to JLab PAC50 and conditionally approved</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.02579">arXiv:2303.02579</a> <span> [<a href="https://arxiv.org/pdf/2303.02579">pdf</a>, <a href="https://arxiv.org/format/2303.02579">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear 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.nuclphysa.2024.122874">10.1016/j.nuclphysa.2024.122874 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Present and Future of QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+D">D. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Afzal%2C+F">F. Afzal</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-bataineh%2C+A">A. Al-bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Almaalol%2C+D+K">D. K. Almaalol</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Androi%C4%87%2C+D">D. Androi膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W+R">W. R. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</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=Barish%2C+K+N">K. N. Barish</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnea%2C+N">N. Barnea</a>, <a href="/search/nucl-ex?searchtype=author&query=Basar%2C+G">G. Basar</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Baty%2C+A+A">A. A. Baty</a>, <a href="/search/nucl-ex?searchtype=author&query=Bautista%2C+I">I. Bautista</a> , et al. (378 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.02579v1-abstract-short" style="display: inline;"> This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclear Science Advisory Committee (NSAC) 2023 Long Range Planning process. A total of 424 physicists registered for the meeting. The meeting highlighted progress in Quantum Chromodynamics (QCD) nuclear physics since the 2015… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02579v1-abstract-full').style.display = 'inline'; document.getElementById('2303.02579v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.02579v1-abstract-full" style="display: none;"> This White Paper presents the community inputs and scientific conclusions from the Hot and Cold QCD Town Meeting that took place September 23-25, 2022 at MIT, as part of the Nuclear Science Advisory Committee (NSAC) 2023 Long Range Planning process. A total of 424 physicists registered for the meeting. The meeting highlighted progress in Quantum Chromodynamics (QCD) nuclear physics since the 2015 LRP (LRP15) and identified key questions and plausible paths to obtaining answers to those questions, defining priorities for our research over the coming decade. In defining the priority of outstanding physics opportunities for the future, both prospects for the short (~ 5 years) and longer term (5-10 years and beyond) are identified together with the facilities, personnel and other resources needed to maximize the discovery potential and maintain United States leadership in QCD physics worldwide. This White Paper is organized as follows: In the Executive Summary, we detail the Recommendations and Initiatives that were presented and discussed at the Town Meeting, and their supporting rationales. Section 2 highlights major progress and accomplishments of the past seven years. It is followed, in Section 3, by an overview of the physics opportunities for the immediate future, and in relation with the next QCD frontier: the EIC. Section 4 provides an overview of the physics motivations and goals associated with the EIC. Section 5 is devoted to the workforce development and support of diversity, equity and inclusion. This is followed by a dedicated section on computing in Section 6. Section 7 describes the national need for nuclear data science and the relevance to QCD research. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.02579v1-abstract-full').style.display = 'none'; document.getElementById('2303.02579v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">QCD Town Meeting White Paper, as submitted to 2023 NSAC LRP committee on Feb. 28, 2023</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Phys.A 1047 (2024) 122874 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.12160">arXiv:2212.12160</a> <span> [<a href="https://arxiv.org/pdf/2212.12160">pdf</a>, <a href="https://arxiv.org/format/2212.12160">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear 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.108.035202">10.1103/PhysRevC.108.035202 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of flavor asymmetry of light-quark sea in the proton with Drell-Yan dimuon production in $p+p$ and $p+d$ collisions at 120 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Kerns%2C+B">B. Kerns</a>, <a href="/search/nucl-ex?searchtype=author&query=Leung%2C+C">C. Leung</a>, <a href="/search/nucl-ex?searchtype=author&query=McClellan%2C+R+E">R. E. McClellan</a>, <a href="/search/nucl-ex?searchtype=author&query=Miyasaka%2C+S">S. Miyasaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Morton%2C+D+H">D. H. Morton</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Sanftl%2C+F">F. Sanftl</a>, <a href="/search/nucl-ex?searchtype=author&query=Scott%2C+M+B+C">M. B. C. Scott</a>, <a href="/search/nucl-ex?searchtype=author&query=Tadepalli%2C+A+S">A. S. Tadepalli</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+T">C. T. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+T+H">T. H. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</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=Geesaman%2C+D+F">D. F. Geesaman</a> , et al. (44 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.12160v4-abstract-short" style="display: inline;"> Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the $\bar d\left(x\right) / \bar u\left(x\right)$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12160v4-abstract-full').style.display = 'inline'; document.getElementById('2212.12160v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.12160v4-abstract-full" style="display: none;"> Evidence for a flavor asymmetry between the $\bar u$ and $\bar d$ quark distributions in the proton has been found in deep-inelastic scattering and Drell-Yan experiments. The pronounced dependence of this flavor asymmetry on $x$ (fraction of nucleon momentum carried by partons) observed in the Fermilab E866 Drell-Yan experiment suggested a drop of the $\bar d\left(x\right) / \bar u\left(x\right)$ ratio in the $x > 0.15$ region. We report results from the SeaQuest Fermilab E906 experiment with improved statistical precision for $\bar d\left(x\right) / \bar u\left(x\right)$ in the large $x$ region up to $x=0.45$ using the 120 GeV proton beam. Two different methods for extracting the Drell-Yan cross section ratios, $蟽^{pd} /2 蟽^{pp}$, from the SeaQuest data give consistent results. The $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios and the $\bar d\left(x\right) - \bar u\left(x\right)$ differences are deduced from these cross section ratios for $0.13 < x < 0.45$. The SeaQuest and E866/NuSea $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ ratios are in good agreement for the $x\lesssim 0.25$ region. The new SeaQuest data, however, show that $\bar d\left(x\right)$ continues to be greater than $\bar u\left(x\right)$ up to the highest $x$ value ($x = 0.45$). The new results on $\bar{d}\left(x\right) / \bar{u}\left(x\right)$ and $\bar{d}\left(x\right) - \bar{u}\left(x\right)$ are compared with various parton distribution functions and theoretical calculations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.12160v4-abstract-full').style.display = 'none'; document.getElementById('2212.12160v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 108, 035202 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.15746">arXiv:2211.15746</a> <span> [<a href="https://arxiv.org/pdf/2211.15746">pdf</a>, <a href="https://arxiv.org/format/2211.15746">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 - 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 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.ppnp.2023.104032">10.1016/j.ppnp.2023.104032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Precision Studies of QCD in the Low Energy Domain of the EIC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Burkert%2C+V">V. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Elouadrhiri%2C+L">L. Elouadrhiri</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Contalbrigo%2C+M">M. Contalbrigo</a>, <a href="/search/nucl-ex?searchtype=author&query=Cosyn%2C+W">W. Cosyn</a>, <a href="/search/nucl-ex?searchtype=author&query=Deshpande%2C+A">A. Deshpande</a>, <a href="/search/nucl-ex?searchtype=author&query=Glazier%2C+D">D. Glazier</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">X. Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Liuti%2C+S">S. Liuti</a>, <a href="/search/nucl-ex?searchtype=author&query=Oh%2C+Y">Y. Oh</a>, <a href="/search/nucl-ex?searchtype=author&query=Richards%2C+D">D. Richards</a>, <a href="/search/nucl-ex?searchtype=author&query=Satogata%2C+T">T. Satogata</a>, <a href="/search/nucl-ex?searchtype=author&query=Vossen%2C+A">A. Vossen</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="2211.15746v3-abstract-short" style="display: inline;"> The manuscript focuses on the high impact science of the EIC with objective to identify a portion of the science program for QCD precision studies that requires or greatly benefits from high luminosity and low center-of-mass energies. The science topics include (1) Generalized Parton Distributions, 3D imagining and mechanical properties of the nucleon (2) mass and spin of the nucleon (3) Momentum… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.15746v3-abstract-full').style.display = 'inline'; document.getElementById('2211.15746v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.15746v3-abstract-full" style="display: none;"> The manuscript focuses on the high impact science of the EIC with objective to identify a portion of the science program for QCD precision studies that requires or greatly benefits from high luminosity and low center-of-mass energies. The science topics include (1) Generalized Parton Distributions, 3D imagining and mechanical properties of the nucleon (2) mass and spin of the nucleon (3) Momentum dependence of the nucleon in semi-inclusive deep inelastic scattering (4) Exotic meson spectroscopy (5) Science highlights of nuclei (6) Precision studies of Lattice QCD in the EIC era (7) Science of far-forward particle detection (8) Radiative effects and corrections (9) Artificial Intelligence (10) EIC interaction regions for high impact science program with discovery potential. This paper documents the scientific basis for supporting such a program and helps to define the path toward the realization of the second EIC interaction region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.15746v3-abstract-full').style.display = 'none'; document.getElementById('2211.15746v3-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">103 pages,47 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.09048">arXiv:2210.09048</a> <span> [<a href="https://arxiv.org/pdf/2210.09048">pdf</a>, <a href="https://arxiv.org/format/2210.09048">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"> ATHENA Detector Proposal -- A Totally Hermetic Electron Nucleus Apparatus proposed for IP6 at the Electron-Ion Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=ATHENA+Collaboration"> ATHENA Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamczyk%2C+L">L. Adamczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Agrawal%2C+N">N. Agrawal</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">C. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Akers%2C+W">W. Akers</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Allen%2C+M+M">M. M. Allen</a>, <a href="/search/nucl-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/nucl-ex?searchtype=author&query=Angerami%2C+A">A. Angerami</a>, <a href="/search/nucl-ex?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/nucl-ex?searchtype=author&query=Apadula%2C+N+J">N. J. Apadula</a>, <a href="/search/nucl-ex?searchtype=author&query=Aprahamian%2C+A">A. Aprahamian</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J+R">J. R. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Aune%2C+S">S. Aune</a>, <a href="/search/nucl-ex?searchtype=author&query=Bailey%2C+K">K. Bailey</a>, <a href="/search/nucl-ex?searchtype=author&query=Baldanza%2C+C">C. Baldanza</a>, <a href="/search/nucl-ex?searchtype=author&query=Bansal%2C+M">M. Bansal</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbosa%2C+F">F. Barbosa</a>, <a href="/search/nucl-ex?searchtype=author&query=Barion%2C+L">L. Barion</a> , et al. (415 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="2210.09048v1-abstract-short" style="display: inline;"> ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity. This article describes the detector design and its e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.09048v1-abstract-full').style.display = 'inline'; document.getElementById('2210.09048v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.09048v1-abstract-full" style="display: none;"> ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine tracking and momentum resolution, high performance electromagnetic and hadronic calorimetry, hadron identification over a wide kinematic range, and near-complete hermeticity. This article describes the detector design and its expected performance in the most relevant physics channels. It includes an evaluation of detector technology choices, the technical challenges to realizing the detector and the R&D required to meet those challenges. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.09048v1-abstract-full').style.display = 'none'; document.getElementById('2210.09048v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 17 (2022) 10, P10019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.04189">arXiv:2210.04189</a> <span> [<a href="https://arxiv.org/pdf/2210.04189">pdf</a>, <a href="https://arxiv.org/format/2210.04189">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="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/s41586-022-05007-2">10.1038/s41586-022-05007-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Revealing the short-range structure of the "mirror nuclei" $^3$H and $^3$He </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">R. Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=Santiesteban%2C+N">N. Santiesteban</a>, <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z+H">Z. H. Ye</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</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=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=Barrow%2C+J">J. Barrow</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</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=Bulumulla%2C+D">D. Bulumulla</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Castellanos%2C+J">J. Castellanos</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+J">J-P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chrisman%2C+D">D. Chrisman</a> , et al. (91 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2210.04189v1-abstract-short" style="display: inline;"> When protons and neutrons (nucleons) are bound into atomic nuclei, they are close enough together to feel significant attraction, or repulsion, from the strong, short-distance part of the nucleon-nucleon interaction. These strong interactions lead to hard collisions between nucleons, generating pairs of highly-energetic nucleons referred to as short-range correlations (SRCs). SRCs are an important… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.04189v1-abstract-full').style.display = 'inline'; document.getElementById('2210.04189v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.04189v1-abstract-full" style="display: none;"> When protons and neutrons (nucleons) are bound into atomic nuclei, they are close enough together to feel significant attraction, or repulsion, from the strong, short-distance part of the nucleon-nucleon interaction. These strong interactions lead to hard collisions between nucleons, generating pairs of highly-energetic nucleons referred to as short-range correlations (SRCs). SRCs are an important but relatively poorly understood part of nuclear structure and mapping out the strength and isospin structure (neutron-proton vs proton-proton pairs) of these virtual excitations is thus critical input for modeling a range of nuclear, particle, and astrophysics measurements. Hitherto measurements used two-nucleon knockout or ``triple-coincidence'' reactions to measure the relative contribution of np- and pp-SRCs by knocking out a proton from the SRC and detecting its partner nucleon (proton or neutron). These measurementsshow that SRCs are almost exclusively np pairs, but had limited statistics and required large model-dependent final-state interaction (FSI) corrections. We report on the first measurement using inclusive scattering from the mirror nuclei $^3$H and $^3$He to extract the np/pp ratio of SRCs in the A=3 system. We obtain a measure of the np/pp SRC ratio that is an order of magnitude more precise than previous experiments, and find a dramatic deviation from the near-total np dominance observed in heavy nuclei. This result implies an unexpected structure in the high-momentum wavefunction for $^3$He and $^3$H. Understanding these results will improve our understanding of the short-range part of the N-N interaction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.04189v1-abstract-full').style.display = 'none'; document.getElementById('2210.04189v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 October, 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">Journal ref:</span> Nature 609, 41-45 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.13357">arXiv:2209.13357</a> <span> [<a href="https://arxiv.org/pdf/2209.13357">pdf</a>, <a href="https://arxiv.org/format/2209.13357">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> The Solenoidal Large Intensity Device (SoLID) for JLab 12 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Benesch%2C+J">Jay Benesch</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">Alexandre Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Caylor%2C+J">Jimmy Caylor</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J">Jian-Ping Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Dusa%2C+S+C">Silviu Covrig Dusa</a>, <a href="/search/nucl-ex?searchtype=author&query=Emmert%2C+A">Alexander Emmert</a>, <a href="/search/nucl-ex?searchtype=author&query=Evans%2C+G">George Evans</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+H">Haiyan Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Hansen%2C+J+O">J. Ole Hansen</a>, <a href="/search/nucl-ex?searchtype=author&query=Huber%2C+G+M">Garth M. Huber</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+S">Sylvester Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Khachatryan%2C+V">Vladimir Khachatryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Liyanage%2C+N">Nilanga Liyanage</a>, <a href="/search/nucl-ex?searchtype=author&query=Meziani%2C+Z">Zein-Eddine Meziani</a>, <a href="/search/nucl-ex?searchtype=author&query=Nycz%2C+M">Michael Nycz</a>, <a href="/search/nucl-ex?searchtype=author&query=Peng%2C+C">Chao Peng</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">Michael Paolone</a>, <a href="/search/nucl-ex?searchtype=author&query=Seay%2C+W">Whit Seay</a>, <a href="/search/nucl-ex?searchtype=author&query=Souder%2C+P+A">Paul A. Souder</a>, <a href="/search/nucl-ex?searchtype=author&query=Sparveris%2C+N">Nikos Sparveris</a>, <a href="/search/nucl-ex?searchtype=author&query=Spiesberger%2C+H">Hubert Spiesberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Tian%2C+Y">Ye Tian</a>, <a href="/search/nucl-ex?searchtype=author&query=Voutier%2C+E">Eric Voutier</a>, <a href="/search/nucl-ex?searchtype=author&query=Xie%2C+J">Junqi Xie</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2209.13357v3-abstract-short" style="display: inline;"> The Solenoidal Large Intensity Device (SoLID) is a new experimental apparatus planned for Hall A at the Thomas Jefferson National Accelerator Facility (JLab). SoLID will combine large angular and momentum acceptance with the capability to handle very high data rates at high luminosity. With a slate of approved high-impact physics experiments, SoLID will push JLab to a new limit at the QCD intensit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.13357v3-abstract-full').style.display = 'inline'; document.getElementById('2209.13357v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.13357v3-abstract-full" style="display: none;"> The Solenoidal Large Intensity Device (SoLID) is a new experimental apparatus planned for Hall A at the Thomas Jefferson National Accelerator Facility (JLab). SoLID will combine large angular and momentum acceptance with the capability to handle very high data rates at high luminosity. With a slate of approved high-impact physics experiments, SoLID will push JLab to a new limit at the QCD intensity frontier that will exploit the full potential of its 12 GeV electron beam. In this paper, we present an overview of the rich physics program that can be realized with SoLID, which encompasses the tomography of the nucleon in 3-D momentum space from Semi-Inclusive Deep Inelastic Scattering (SIDIS), expanding the phase space in the search for new physics and novel hadronic effects in parity-violating DIS (PVDIS), a precision measurement of $J/蠄$ production at threshold that probes the gluon field and its contribution to the proton mass, tomography of the nucleon in combined coordinate and momentum space with deep exclusive reactions, and more. To meet the challenging requirements, the design of SoLID described here takes full advantage of recent progress in detector, data acquisition and computing technologies. In addition, we outline potential experiments beyond the currently approved program and discuss the physics that could be explored should upgrades of CEBAF become a reality in the future. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.13357v3-abstract-full').style.display = 'none'; document.getElementById('2209.13357v3-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">This white paper for the SoLID program at Jefferson Lab was prepared in part as an input to the 2023 NSAC Long Range Planning exercise. To be submitted to J. Phys. G</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2207.03850">arXiv:2207.03850</a> <span> [<a href="https://arxiv.org/pdf/2207.03850">pdf</a>, <a href="https://arxiv.org/format/2207.03850">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"> First Measurement of the EMC Effect in $^{10}$B and $^{11}$B </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Karki%2C+A">A. Karki</a>, <a href="/search/nucl-ex?searchtype=author&query=Biswas%2C+D">D. Biswas</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonzalez%2C+F+A">F. A. Gonzalez</a>, <a href="/search/nucl-ex?searchtype=author&query=Henry%2C+W">W. Henry</a>, <a href="/search/nucl-ex?searchtype=author&query=Morean%2C+C">C. Morean</a>, <a href="/search/nucl-ex?searchtype=author&query=Nadeeshani%2C+A">A. Nadeeshani</a>, <a href="/search/nucl-ex?searchtype=author&query=Sun%2C+A">A. Sun</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Z. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Aljawrneh%2C+B">B. Aljawrneh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Ambrose%2C+R">R. Ambrose</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Assumin-Gyimah%2C+K">K. Assumin-Gyimah</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=Bandari%2C+A">A. Bandari</a>, <a href="/search/nucl-ex?searchtype=author&query=Bane%2C+J">J. Bane</a>, <a href="/search/nucl-ex?searchtype=author&query=Barrow%2C+J">J. Barrow</a>, <a href="/search/nucl-ex?searchtype=author&query=Basnet%2C+S">S. Basnet</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">V. Berdnikov</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> , et al. (72 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2207.03850v3-abstract-short" style="display: inline;"> The nuclear dependence of the inclusive inelastic electron scattering cross section (the EMC effect) has been measured for the first time in $^{10}$B and $^{11}$B. Previous measurements of the EMC effect in $A \leq 12$ nuclei showed an unexpected nuclear dependence; $^{10}$B and $^{11}$B were measured to explore the EMC effect in this region in more detail. Results are presented for $^9$Be,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.03850v3-abstract-full').style.display = 'inline'; document.getElementById('2207.03850v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.03850v3-abstract-full" style="display: none;"> The nuclear dependence of the inclusive inelastic electron scattering cross section (the EMC effect) has been measured for the first time in $^{10}$B and $^{11}$B. Previous measurements of the EMC effect in $A \leq 12$ nuclei showed an unexpected nuclear dependence; $^{10}$B and $^{11}$B were measured to explore the EMC effect in this region in more detail. Results are presented for $^9$Be, $^{10}$B, $^{11}$B, and $^{12}$C at an incident beam energy of 10.6~GeV. The EMC effect in the boron isotopes was found to be similar to that for $^9$Be and $^{12}$C, yielding almost no nuclear dependence in the EMC effect in the range $A=4-12$. This represents important, new data supporting the hypothesis that the EMC effect depends primarily on the local nuclear environment due to the cluster structure of these nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.03850v3-abstract-full').style.display = 'none'; document.getElementById('2207.03850v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 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">To appear in PRC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2204.10224">arXiv:2204.10224</a> <span> [<a href="https://arxiv.org/pdf/2204.10224">pdf</a>, <a href="https://arxiv.org/format/2204.10224">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"> The Proton Spin Structure Function $g_2$ and Generalized Polarizabilities in the Strong QCD Regime </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ruth%2C+D">D. Ruth</a>, <a href="/search/nucl-ex?searchtype=author&query=Zielinski%2C+R">R. Zielinski</a>, <a href="/search/nucl-ex?searchtype=author&query=Gu%2C+C">C. Gu</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+M">M. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Badman%2C+T">T. Badman</a>, <a href="/search/nucl-ex?searchtype=author&query=Huang%2C+M">M. Huang</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+J">J. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhu%2C+P">P. Zhu</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+J">J. Zhang</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+P">J. P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Slifer%2C+K">K. Slifer</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Baghdasaryan%2C+H">H. Baghdasaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Brock%2C+J">J. Brock</a>, <a href="/search/nucl-ex?searchtype=author&query=Carlin%2C+C">C. Carlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+C">C. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Cisbani%2C+E">E. Cisbani</a>, <a href="/search/nucl-ex?searchtype=author&query=Crabb%2C+D">D. Crabb</a> , et al. (72 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2204.10224v2-abstract-short" style="display: inline;"> The strong interaction is not well understood at low energy, or for interactions with low momentum transfer $Q^2$, but one of the clearest insights we have comes from Chiral Perturbation Theory ($蠂$PT). This effective treatment gives testable predictions for the nucleonic generalized polarizabilities -- fundamental quantities describing the nucleon's response to an external field. We have measured… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.10224v2-abstract-full').style.display = 'inline'; document.getElementById('2204.10224v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2204.10224v2-abstract-full" style="display: none;"> The strong interaction is not well understood at low energy, or for interactions with low momentum transfer $Q^2$, but one of the clearest insights we have comes from Chiral Perturbation Theory ($蠂$PT). This effective treatment gives testable predictions for the nucleonic generalized polarizabilities -- fundamental quantities describing the nucleon's response to an external field. We have measured the proton's generalized spin polarizabilities in the region where $蠂$PT is expected to be valid. Our results include the first ever data for the transverse-longitudinal spin polarizability $未_{LT}$, and also extend the coverage of the polarizability $\bar{d_2}$ to very low $Q^2$ for the first time. These results were extracted from moments of the structure function $g_2$, a quantity which characterizes the internal spin structure of the proton. Our experiment ran at Jefferson Lab using a polarized electron beam and a polarized solid ammonia (NH$_3$) target. The $未_{LT}$ polarizability has remained a challenging quantity for $蠂$PT to reproduce, despite its reduced sensitivity to higher resonance contributions; recent competing calculations still disagree with each other and also diverge from the measured neutron data at very low $Q^2$. Our proton results provide discriminating power between existing calculations, and will help provide a better understanding of this strong QCD regime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2204.10224v2-abstract-full').style.display = 'none'; document.getElementById('2204.10224v2-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 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.02608">arXiv:2203.02608</a> <span> [<a href="https://arxiv.org/pdf/2203.02608">pdf</a>, <a href="https://arxiv.org/format/2203.02608">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/10.1146/annurev-nucl-102020-022253">10.1146/annurev-nucl-102020-022253 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Progress in understanding short-range structure in nuclei: an experimental perspective </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomin%2C+N">Nadia Fomin</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmidt%2C+A">Axel Schmidt</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="2203.02608v1-abstract-short" style="display: inline;"> High-energy electron scattering is a clean and precise probe for measurements of hadronic and nuclear structure, with a key role in understanding the role of high-momentum nucleons (and quarks) in nuclei. Jefferson Lab has dramatically expanded our understanding of the high-momentum nucleons generated by short-range correlations, providing sufficient insight to model much of their impact on nuclea… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02608v1-abstract-full').style.display = 'inline'; document.getElementById('2203.02608v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.02608v1-abstract-full" style="display: none;"> High-energy electron scattering is a clean and precise probe for measurements of hadronic and nuclear structure, with a key role in understanding the role of high-momentum nucleons (and quarks) in nuclei. Jefferson Lab has dramatically expanded our understanding of the high-momentum nucleons generated by short-range correlations, providing sufficient insight to model much of their impact on nuclear structure in neutron stars, and in low- to medium-energy scattering observables including neutrino oscillation measurements. These short-range correlations also appear to be related to the modification of the quark distributions in nuclei, and efforts to improve our understanding of the internal structure of these short-distance and high-momentum configurations in nuclei will provide important input on a wide range of high-energy observables. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02608v1-abstract-full').style.display = 'none'; document.getElementById('2203.02608v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 10 figures, invited contribution to Annual Reviews of Nuclear and Particle Science</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.00060">arXiv:2112.00060</a> <span> [<a href="https://arxiv.org/pdf/2112.00060">pdf</a>, <a href="https://arxiv.org/format/2112.00060">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> <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"> Physics with CEBAF at 12 GeV and Future Opportunities </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Boehnlein%2C+A">A. Boehnlein</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=Brooks%2C+W+K">W. K. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudakov%2C+E">E. Chudakov</a>, <a href="/search/nucl-ex?searchtype=author&query=Cloet%2C+I">I. Cloet</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+H">H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Grames%2C+J">J. Grames</a>, <a href="/search/nucl-ex?searchtype=author&query=Harwood%2C+L">L. Harwood</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+X">X. Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Krafft%2C+G">G. Krafft</a>, <a href="/search/nucl-ex?searchtype=author&query=McKeown%2C+R+D">R. D. McKeown</a>, <a href="/search/nucl-ex?searchtype=author&query=Napolitano%2C+J">J. Napolitano</a>, <a href="/search/nucl-ex?searchtype=author&query=Qiu%2C+J+W">J. W. Qiu</a>, <a href="/search/nucl-ex?searchtype=author&query=Rossi%2C+P">P. Rossi</a>, <a href="/search/nucl-ex?searchtype=author&query=Schram%2C+M">M. Schram</a>, <a href="/search/nucl-ex?searchtype=author&query=Stepanyan%2C+S">S. Stepanyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Stevens%2C+J">J. Stevens</a>, <a href="/search/nucl-ex?searchtype=author&query=Szczepaniak%2C+A+P">A. P. Szczepaniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Toro%2C+N">N. Toro</a>, <a href="/search/nucl-ex?searchtype=author&query=Zheng%2C+X">X. 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="2112.00060v2-abstract-short" style="display: inline;"> We summarize the ongoing scientific program of the 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and give an outlook into future scientific opportunities. The program addresses important topics in nuclear, hadronic, and electroweak physics including nuclear femtography, meson and baryon spectroscopy, quarks and gluons in nuclei, precision tests of the standard model, and dark sector… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.00060v2-abstract-full').style.display = 'inline'; document.getElementById('2112.00060v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.00060v2-abstract-full" style="display: none;"> We summarize the ongoing scientific program of the 12 GeV Continuous Electron Beam Accelerator Facility (CEBAF) and give an outlook into future scientific opportunities. The program addresses important topics in nuclear, hadronic, and electroweak physics including nuclear femtography, meson and baryon spectroscopy, quarks and gluons in nuclei, precision tests of the standard model, and dark sector searches. Potential upgrades of CEBAF are considered, such as higher luminosity, polarized and unpolarized positron beams, and doubling the beam energy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.00060v2-abstract-full').style.display = 'none'; document.getElementById('2112.00060v2-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 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">To be published by Progress in Particle and Nuclear Physics in 2022</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.09575">arXiv:2110.09575</a> <span> [<a href="https://arxiv.org/pdf/2110.09575">pdf</a>, <a href="https://arxiv.org/format/2110.09575">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/17/04/P04006">10.1088/1748-0221/17/04/P04006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A direct-sampling RF receiver for MOLLER beam charge measurement </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mei%2C+Y">Yuan Mei</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">Shujie Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Camilleri%2C+J">Joseph Camilleri</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuda%2C+A">Aled Cuda</a>, <a href="/search/nucl-ex?searchtype=author&query=Egelhoff%2C+J">James Egelhoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolomensky%2C+Y">Yury Kolomensky</a>, <a href="/search/nucl-ex?searchtype=author&query=Sichtermann%2C+E">Ernst Sichtermann</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="2110.09575v1-abstract-short" style="display: inline;"> We have developed and tested a direct-sampling RF receiver capable of measuring the amplitude of a 1497 MHz sinusoidal signal in 0.5 ms integration windows to within <10 ppm relative uncertainty. The receiver is intended for measuring signals from beam current monitoring cavities on the beamline of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Laboratory. The signal streng… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.09575v1-abstract-full').style.display = 'inline'; document.getElementById('2110.09575v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.09575v1-abstract-full" style="display: none;"> We have developed and tested a direct-sampling RF receiver capable of measuring the amplitude of a 1497 MHz sinusoidal signal in 0.5 ms integration windows to within <10 ppm relative uncertainty. The receiver is intended for measuring signals from beam current monitoring cavities on the beamline of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Laboratory. The signal strength, frequency, and integration window are consistent with the thus far unmet requirements of the upcoming MOLLER experiment to measure the beam charge for different helicity states. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.09575v1-abstract-full').style.display = 'none'; document.getElementById('2110.09575v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.08399">arXiv:2110.08399</a> <span> [<a href="https://arxiv.org/pdf/2110.08399">pdf</a>, <a href="https://arxiv.org/format/2110.08399">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.104.065203">10.1103/PhysRevC.104.065203 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the EMC effect in light and heavy nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Bane%2C+J">J. Bane</a>, <a href="/search/nucl-ex?searchtype=author&query=Daniel%2C+A">A. Daniel</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomin%2C+N">N. Fomin</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Seely%2C+J">J. Seely</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+R">R. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosted%2C+P">P. Bosted</a>, <a href="/search/nucl-ex?searchtype=author&query=Bukhari%2C+M+H+S">M. H. S. Bukhari</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Connell%2C+S">S. Connell</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=Day%2C+D">D. Day</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunne%2C+J">J. Dunne</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</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=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Fenker%2C+H">H. Fenker</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+H">H. Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">T. Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Hungerford%2C+E">E. Hungerford</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+M+K">M. K. Jones</a> , et al. (32 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.08399v2-abstract-short" style="display: inline;"> Inclusive electron scattering from nuclear targets has been measured to extract the nuclear dependence of the inelastic cross section in Hall C at the Thomas Jefferson National Accelerator facility. Results are presented for 2H, 3He, 4He, 9B, 12C, 63Cu and 197Au at an incident electron beam energy of 5.77 GeV for a range of momentum transfer from Q^2 = 2 to 7 (GeV/c)^2. These data improve the prec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.08399v2-abstract-full').style.display = 'inline'; document.getElementById('2110.08399v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.08399v2-abstract-full" style="display: none;"> Inclusive electron scattering from nuclear targets has been measured to extract the nuclear dependence of the inelastic cross section in Hall C at the Thomas Jefferson National Accelerator facility. Results are presented for 2H, 3He, 4He, 9B, 12C, 63Cu and 197Au at an incident electron beam energy of 5.77 GeV for a range of momentum transfer from Q^2 = 2 to 7 (GeV/c)^2. These data improve the precision of the existing measurements of the EMC effect in the nuclear targets at large x, and allow for more detailed examinations of the A dependence of the EMC effect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.08399v2-abstract-full').style.display = 'none'; document.getElementById('2110.08399v2-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 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 23 figures, archival paper for Jefferson Lab experiment E03-103</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.05419">arXiv:2103.05419</a> <span> [<a href="https://arxiv.org/pdf/2103.05419">pdf</a>, <a href="https://arxiv.org/format/2103.05419">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <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.nuclphysa.2022.122447">10.1016/j.nuclphysa.2022.122447 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Khalek%2C+R+A">R. Abdul Khalek</a>, <a href="/search/nucl-ex?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/nucl-ex?searchtype=author&query=Adam%2C+J">J. Adam</a>, <a href="/search/nucl-ex?searchtype=author&query=Adamiak%2C+D">D. Adamiak</a>, <a href="/search/nucl-ex?searchtype=author&query=Akers%2C+W">W. Akers</a>, <a href="/search/nucl-ex?searchtype=author&query=Albaladejo%2C+M">M. Albaladejo</a>, <a href="/search/nucl-ex?searchtype=author&query=Al-bataineh%2C+A">A. Al-bataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Ameli%2C+F">F. Ameli</a>, <a href="/search/nucl-ex?searchtype=author&query=Antonioli%2C+P">P. Antonioli</a>, <a href="/search/nucl-ex?searchtype=author&query=Armesto%2C+N">N. Armesto</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W+R">W. R. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arratia%2C+M">M. Arratia</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Asai%2C+M">M. Asai</a>, <a href="/search/nucl-ex?searchtype=author&query=Aschenauer%2C+E+C">E. C. Aschenauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Aune%2C+S">S. Aune</a>, <a href="/search/nucl-ex?searchtype=author&query=Avagyan%2C+H">H. Avagyan</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=Azmoun%2C+B">B. Azmoun</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacchetta%2C+A">A. Bacchetta</a>, <a href="/search/nucl-ex?searchtype=author&query=Baker%2C+M+D">M. D. Baker</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbosa%2C+F">F. Barbosa</a>, <a href="/search/nucl-ex?searchtype=author&query=Barion%2C+L">L. Barion</a> , et al. (390 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.05419v3-abstract-short" style="display: inline;"> This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States with the capability to collide high-energy electron beams with high-energy proton and ion beams, providing access to those regions in the nucleon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.05419v3-abstract-full').style.display = 'inline'; document.getElementById('2103.05419v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.05419v3-abstract-full" style="display: none;"> This report describes the physics case, the resulting detector requirements, and the evolving detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC will be a powerful new high-luminosity facility in the United States with the capability to collide high-energy electron beams with high-energy proton and ion beams, providing access to those regions in the nucleon and nuclei where their structure is dominated by gluons. Moreover, polarized beams in the EIC will give unprecedented access to the spatial and spin structure of the proton, neutron, and light ions. The studies leading to this document were commissioned and organized by the EIC User Group with the objective of advancing the state and detail of the physics program and developing detector concepts that meet the emerging requirements in preparation for the realization of the EIC. The effort aims to provide the basis for further development of concepts for experimental equipment best suited for the science needs, including the importance of two complementary detectors and interaction regions. This report consists of three volumes. Volume I is an executive summary of our findings and developed concepts. In Volume II we describe studies of a wide range of physics measurements and the emerging requirements on detector acceptance and performance. Volume III discusses general-purpose detector concepts and the underlying technologies to meet the physics requirements. These considerations will form the basis for a world-class experimental program that aims to increase our understanding of the fundamental structure of all visible matter <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.05419v3-abstract-full').style.display = 'none'; document.getElementById('2103.05419v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">902 pages, 415 authors, 151 institutions</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> BNL-220990-2021-FORE, JLAB-PHY-21-3198, LA-UR-21-20953 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Phys. A 1026 (2022) 122447 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.04024">arXiv:2103.04024</a> <span> [<a href="https://arxiv.org/pdf/2103.04024">pdf</a>, <a href="https://arxiv.org/ps/2103.04024">ps</a>, <a href="https://arxiv.org/format/2103.04024">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear 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/s41586-021-03282-z">10.1038/s41586-021-03282-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Asymmetry of Antimatter in the Proton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Dove%2C+J">J. Dove</a>, <a href="/search/nucl-ex?searchtype=author&query=Kerns%2C+B">B. Kerns</a>, <a href="/search/nucl-ex?searchtype=author&query=McClellan%2C+R+E">R. E. McClellan</a>, <a href="/search/nucl-ex?searchtype=author&query=Miyasaka%2C+S">S. Miyasaka</a>, <a href="/search/nucl-ex?searchtype=author&query=Morton%2C+D+H">D. H. Morton</a>, <a href="/search/nucl-ex?searchtype=author&query=Nagai%2C+K">K. Nagai</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasad%2C+S">S. Prasad</a>, <a href="/search/nucl-ex?searchtype=author&query=Sanftl%2C+F">F. Sanftl</a>, <a href="/search/nucl-ex?searchtype=author&query=Scott%2C+M+B+C">M. B. C. Scott</a>, <a href="/search/nucl-ex?searchtype=author&query=Tadepalli%2C+A+S">A. S. Tadepalli</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C+A">C. A. Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayuso%2C+C">C. Ayuso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barker%2C+C+L">C. L. Barker</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C+N">C. N. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+C">W. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">A. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Christian%2C+D+C">D. C. Christian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dannowitz%2C+B+P">B. P. Dannowitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Daugherity%2C+M">M. Daugherity</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">M. Diefenthaler</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=Geesaman%2C+D+F">D. F. Geesaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Goto%2C+Y">Y. Goto</a> , et al. (42 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.04024v1-abstract-short" style="display: inline;"> The fundamental building blocks of the proton, quarks and gluons, have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as for example its spin. The two up and the single down quarks that comprise the proton in the sim… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.04024v1-abstract-full').style.display = 'inline'; document.getElementById('2103.04024v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.04024v1-abstract-full" style="display: none;"> The fundamental building blocks of the proton, quarks and gluons, have been known for decades. However, we still have an incomplete theoretical and experimental understanding of how these particles and their dynamics give rise to the quantum bound state of the proton and its physical properties, such as for example its spin. The two up and the single down quarks that comprise the proton in the simplest picture account only for a few percent of the proton mass, the bulk of which is in the form of quark kinetic and potential energy and gluon energy from the strong force. An essential feature of this force, as described by quantum chromodynamics, is its ability to create matter-antimatter quark pairs inside the proton that exist only for a very short time. Their fleeting existence makes the antimatter quarks within protons difficult to study, but their existence is discernible in reactions where a matter-antimatter quark pair annihilates. In this picture of quark-antiquark creation by the strong force, the probability distributions as a function of momentum for the presence of up and down antimatter quarks should be nearly identical, since their masses are quite similar and small compared to the mass of the proton. In the present manuscript, we show evidence from muon pair production measurements that these distributions are significantly different, with more abundant down antimatter quarks than up antimatter quarks over a wide range of momentum. These results revive interest in several proposed mechanisms as the origin of this antimatter asymmetry in the proton that had been disfavored by the previous results and point to the future measurements that can distinguish between these mechanisms. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.04024v1-abstract-full').style.display = 'none'; document.getElementById('2103.04024v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures, 5 tables; Matches published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FERMILAB-PUB-21-073-E </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nature, 590, 561-565 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.03752">arXiv:2103.03752</a> <span> [<a href="https://arxiv.org/pdf/2103.03752">pdf</a>, <a href="https://arxiv.org/format/2103.03752">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/10.1140/epja/s10050-021-00633-2">10.1140/epja/s10050-021-00633-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A measurement of two-photon exchange in Super-Rosenbluth separations with positron beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J+R">John R Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Yurov%2C+M">Mikhail Yurov</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="2103.03752v2-abstract-short" style="display: inline;"> The proton electric and magnetic form factors, $G_E$ and $G_M$, are intrinsically connected to the spatial distribution of charge and magnetization in the proton. For decades, Rosenbluth separation measurements of the angular dependence of elastic e$^-$-p scattering were used to extract $G_E$ and $G_M$. More recently, polarized electron scattering measurements, aiming to improve the precision of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.03752v2-abstract-full').style.display = 'inline'; document.getElementById('2103.03752v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.03752v2-abstract-full" style="display: none;"> The proton electric and magnetic form factors, $G_E$ and $G_M$, are intrinsically connected to the spatial distribution of charge and magnetization in the proton. For decades, Rosenbluth separation measurements of the angular dependence of elastic e$^-$-p scattering were used to extract $G_E$ and $G_M$. More recently, polarized electron scattering measurements, aiming to improve the precision of $G_E$ extractions, showed significant disagreement with Rosenbluth measurements at large momentum transfers ($Q^2$). This discrepancy is generally attributed to neglected two-photon exchange (TPE) corrections. At larger $Q^2$ values, a new `Super-Rosenbluth' technique was used to improve the precision of the Rosenbluth extraction, allowing for a better quantification of the discrepancy, while comparisons of e$^+$-p and e$^-$-p scattering indicated the presence of TPE corrections, but at $Q^2$ values below where a clear discrepancy is observed. In this work, we demonstrate the significant benefits to combining the Super-Rosenbluth technique with positron beam measurements. This approach provides a greater kinematic reach and is insensitive to some of the key systematic uncertainties in previous positron measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.03752v2-abstract-full').style.display = 'none'; document.getElementById('2103.03752v2-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 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 5 figures, accepted for publication in EPJA</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.01842">arXiv:2103.01842</a> <span> [<a href="https://arxiv.org/pdf/2103.01842">pdf</a>, <a href="https://arxiv.org/format/2103.01842">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.128.102002">10.1103/PhysRevLett.128.102002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Form Factors and Two-Photon Exchange in High-Energy Elastic Electron-Proton Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Gautam%2C+T">T. Gautam</a>, <a href="/search/nucl-ex?searchtype=author&query=Ou%2C+L">L. Ou</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmookler%2C+B">B. Schmookler</a>, <a href="/search/nucl-ex?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/nucl-ex?searchtype=author&query=Adikaram%2C+D">D. Adikaram</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Z. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+S+F">S. F. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Aljawrneh%2C+B">B. Aljawrneh</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Allison%2C+S+L">S. L. Allison</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</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=Bartlett%2C+K">K. Bartlett</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a> , et al. (145 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.01842v3-abstract-short" style="display: inline;"> We present new precision measurements of the elastic electron-proton scattering cross section for momentum transfer (Q$^2$) up to 15.75~\gevsq. Combined with existing data, these provide an improved extraction of the proton magnetic form factor at high Q$^2$ and double the range over which a longitudinal/transverse separation of the cross section can be performed. The difference between our result… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.01842v3-abstract-full').style.display = 'inline'; document.getElementById('2103.01842v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.01842v3-abstract-full" style="display: none;"> We present new precision measurements of the elastic electron-proton scattering cross section for momentum transfer (Q$^2$) up to 15.75~\gevsq. Combined with existing data, these provide an improved extraction of the proton magnetic form factor at high Q$^2$ and double the range over which a longitudinal/transverse separation of the cross section can be performed. The difference between our results and polarization data agrees with that observed at lower Q$^2$ and attributed to hard two-photon exchange (TPE) effects, extending to 8~(GeV/c)$^2$ the range of Q$^2$ for which a discrepancy is established at $>$95\% confidence. We use the discrepancy to quantify the size of TPE contributions needed to explain the cross section at high Q$^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.01842v3-abstract-full').style.display = 'none'; document.getElementById('2103.01842v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 128, 102002 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2102.11788">arXiv:2102.11788</a> <span> [<a href="https://arxiv.org/pdf/2102.11788">pdf</a>, <a href="https://arxiv.org/format/2102.11788">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </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/abf5c3">10.1088/1361-6471/abf5c3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Revealing the structure of light pseudoscalar mesons at the Electron-Ion Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">Carlos Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Barry%2C+P+C">Patrick C Barry</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">Vladimir Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Binosi%2C+D">Daniele Binosi</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+L">Lei Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">Markus Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+M">Minghui Ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">Rolf Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Frederico%2C+T">Tobias Frederico</a>, <a href="/search/nucl-ex?searchtype=author&query=Furletova%2C+Y">Yulia Furletova</a>, <a href="/search/nucl-ex?searchtype=author&query=Hobbs%2C+T+J">Tim J Hobbs</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">Tanja Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Huber%2C+G+M">Garth M Huber</a>, <a href="/search/nucl-ex?searchtype=author&query=Kay%2C+S+J">Stephen JD Kay</a>, <a href="/search/nucl-ex?searchtype=author&query=Keppel%2C+C">Cynthia Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Lin%2C+H">Huy-Wen Lin</a>, <a href="/search/nucl-ex?searchtype=author&query=Mezrag%2C+C">Cedric Mezrag</a>, <a href="/search/nucl-ex?searchtype=author&query=Montgomery%2C+R">Rachel Montgomery</a>, <a href="/search/nucl-ex?searchtype=author&query=Pegg%2C+I+L">Ian L Pegg</a>, <a href="/search/nucl-ex?searchtype=author&query=Raya%2C+K">Khepani Raya</a>, <a href="/search/nucl-ex?searchtype=author&query=Reimer%2C+P">Paul Reimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Richards%2C+D+G">David G Richards</a>, <a href="/search/nucl-ex?searchtype=author&query=Roberts%2C+C+D">Craig D Roberts</a>, <a href="/search/nucl-ex?searchtype=author&query=Rodriguez-Quintero%2C+J">Jose Rodriguez-Quintero</a> , et al. (7 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="2102.11788v1-abstract-short" style="display: inline;"> How the bulk of the Universe's visible mass emerges and how it is manifest in the existence and properties of hadrons are profound questions that probe into the heart of strongly interacting matter. Paradoxically, the lightest pseudoscalar mesons appear to be the key to the further understanding of the emergent mass and structure mechanisms. These mesons, namely the pion and kaon, are the Nambu-Go… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.11788v1-abstract-full').style.display = 'inline'; document.getElementById('2102.11788v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2102.11788v1-abstract-full" style="display: none;"> How the bulk of the Universe's visible mass emerges and how it is manifest in the existence and properties of hadrons are profound questions that probe into the heart of strongly interacting matter. Paradoxically, the lightest pseudoscalar mesons appear to be the key to the further understanding of the emergent mass and structure mechanisms. These mesons, namely the pion and kaon, are the Nambu-Goldstone boson modes of QCD. Unravelling their partonic structure and the interplay between emergent and Higgs-boson mass mechanisms is a common goal of three interdependent approaches -- continuum QCD phenomenology, lattice-regularised QCD, and the global analysis of parton distributions -- linked to experimental measurements of hadron structure. Experimentally, the foreseen electron-ion collider will enable a revolution in our ability to study pion and kaon structure, accessed by scattering from the "meson cloud" of the proton through the Sullivan process. With the goal of enabling a suite of measurements that can address these questions, we examine key reactions to identify the critical detector system requirements needed to map tagged pion and kaon cross sections over a wide range of kinematics. The excellent prospects for extracting pion structure function and form factor data are shown, and similar prospects for kaon structure are discussed in the context of a worldwide programme. Successful completion of the programme outlined herein will deliver deep, far-reaching insights into the emergence of pions and kaons, their properties, and their role as QCD's Goldstone boson modes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.11788v1-abstract-full').style.display = 'none'; document.getElementById('2102.11788v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">73 pages, 27 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/2102.08337">arXiv:2102.08337</a> <span> [<a href="https://arxiv.org/pdf/2102.08337">pdf</a>, <a href="https://arxiv.org/format/2102.08337">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> <p class="title is-5 mathjax"> EIC Physics from An All-Silicon Tracking Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">Reynier Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=DeGraw%2C+W">Winston DeGraw</a>, <a href="/search/nucl-ex?searchtype=author&query=Dong%2C+X">Xin Dong</a>, <a href="/search/nucl-ex?searchtype=author&query=Greiner%2C+L">Leo Greiner</a>, <a href="/search/nucl-ex?searchtype=author&query=Heppelmann%2C+S">Samuel Heppelmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Jacak%2C+B">Barbara Jacak</a>, <a href="/search/nucl-ex?searchtype=author&query=Ji%2C+Y">Yuanjing Ji</a>, <a href="/search/nucl-ex?searchtype=author&query=Kelsey%2C+M">Matthew Kelsey</a>, <a href="/search/nucl-ex?searchtype=author&query=Klein%2C+S+R">Spencer R. Klein</a>, <a href="/search/nucl-ex?searchtype=author&query=Lai%2C+Y+S">Yue Shi Lai</a>, <a href="/search/nucl-ex?searchtype=author&query=Odyniec%2C+G">Grazyna Odyniec</a>, <a href="/search/nucl-ex?searchtype=author&query=Radhakrishnan%2C+S">Sooraj Radhakrishnan</a>, <a href="/search/nucl-ex?searchtype=author&query=Sichtermann%2C+E">Ernst Sichtermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Son%2C+Y">Youqi Son</a>, <a href="/search/nucl-ex?searchtype=author&query=Acosta%2C+F+T">Fernando Torales Acosta</a>, <a href="/search/nucl-ex?searchtype=author&query=Xia%2C+L">Lei Xia</a>, <a href="/search/nucl-ex?searchtype=author&query=Xu%2C+N">Nu Xu</a>, <a href="/search/nucl-ex?searchtype=author&query=Yuan%2C+F">Feng Yuan</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhao%2C+Y">Yuxiang 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="2102.08337v1-abstract-short" style="display: inline;"> The proposed electron-ion collider has a rich physics program to study the internal structure of protons and heavy nuclei. This program will impose strict requirements on detector design. This paper explores how these requirements can be satisfied using an all-silicon tracking detector, by consideration of three representative probes: heavy flavor hadrons, jets, and exclusive vector mesons. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2102.08337v1-abstract-full" style="display: none;"> The proposed electron-ion collider has a rich physics program to study the internal structure of protons and heavy nuclei. This program will impose strict requirements on detector design. This paper explores how these requirements can be satisfied using an all-silicon tracking detector, by consideration of three representative probes: heavy flavor hadrons, jets, and exclusive vector mesons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2102.08337v1-abstract-full').style.display = 'none'; document.getElementById('2102.08337v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 February, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">48 pages, 55 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/2007.15081">arXiv:2007.15081</a> <span> [<a href="https://arxiv.org/pdf/2007.15081">pdf</a>, <a href="https://arxiv.org/format/2007.15081">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/10.1140/epja/s10050-021-00564-y">10.1140/epja/s10050-021-00564-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Albayrak%2C+I">I. Albayrak</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+S+F">S. F. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J+R+M">J. R. M. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</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=Barion%2C+L">L. Barion</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Beminiwattha%2C+R">R. Beminiwattha</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V+V">V. V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertone%2C+V">V. Bertone</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianconi%2C+A">A. Bianconi</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A">A. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisio%2C+P">P. Bisio</a>, <a href="/search/nucl-ex?searchtype=author&query=Blunden%2C+P">P. Blunden</a> , et al. (205 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="2007.15081v2-abstract-short" style="display: inline;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context of the hadronic physics program at Jefferson Lab (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of nucleons and nuclei, in both the elastic an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15081v2-abstract-full').style.display = 'inline'; document.getElementById('2007.15081v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.15081v2-abstract-full" style="display: none;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context of the hadronic physics program at Jefferson Lab (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of nucleons and nuclei, in both the elastic and deep-inelastic regimes. For instance, elastic scattering of polarized and unpolarized electrons and positrons from the nucleon enables a model independent determination of its electromagnetic form factors. Also, the deeply-virtual scattering of polarized and unpolarized electrons and positrons allows unambiguous separation of the different contributions to the cross section of the lepto-production of photons and of lepton-pairs, enabling an accurate determination of the nucleons and nuclei generalized parton distributions, and providing an access to the gravitational form factors. Furthermore, positron beams offer the possibility of alternative tests of the Standard Model of particle physics through the search of a dark photon, the precise measurement of electroweak couplings, and the investigation of charged lepton flavor violation. This document discusses the perspectives of an experimental program with high duty-cycle positron beams at JLab. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15081v2-abstract-full').style.display = 'none'; document.getElementById('2007.15081v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 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">18 pages, 7 figures This version superseeds the previous version which scientific content was decomposed into several more elaborated articles. All of these articles will be collected in the EPJ A Topical Issue about "Positron beam and physics at Jefferson Lab (e+@Jlab)"</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.11448">arXiv:2004.11448</a> <span> [<a href="https://arxiv.org/pdf/2004.11448">pdf</a>, <a href="https://arxiv.org/format/2004.11448">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.102.064004">10.1103/PhysRevC.102.064004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Novel observation of isospin structure of short-range correlations in calcium isotopes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Nguyen%2C+D">D. Nguyen</a>, <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z">Z. Ye</a>, <a href="/search/nucl-ex?searchtype=author&query=Aguilera%2C+P">P. Aguilera</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Z. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B">B. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anez%2C+D">D. Anez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Baghdasaryan%2C+H">H. Baghdasaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+S">S. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</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+C">C. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+-">J. -P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chirapatpimol%2C+K">K. Chirapatpimol</a>, <a href="/search/nucl-ex?searchtype=author&query=Cisbani%2C+E">E. Cisbani</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=Daniel%2C+A">A. Daniel</a> , et al. (79 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.11448v2-abstract-short" style="display: inline;"> Short Range Correlations (SRCs) have been identified as being responsible for the high momentum tail of the nucleon momentum distribution, n(k). Hard, short-range interactions of nucleon pairs generate the high momentum tail and imprint a universal character on n(k) for all nuclei at large momentum. Triple coincidence experiments have shown a strong dominance of np pairs, but these measurements in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.11448v2-abstract-full').style.display = 'inline'; document.getElementById('2004.11448v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.11448v2-abstract-full" style="display: none;"> Short Range Correlations (SRCs) have been identified as being responsible for the high momentum tail of the nucleon momentum distribution, n(k). Hard, short-range interactions of nucleon pairs generate the high momentum tail and imprint a universal character on n(k) for all nuclei at large momentum. Triple coincidence experiments have shown a strong dominance of np pairs, but these measurements involve large final state interactions. This paper presents the results from Jefferson Lab experiment E08014 which measured inclusive electron scattering cross-section from Ca isotopes. By comparing the inclusive cross section from 48Ca to 40Ca in a kinematic region dominated by SRCs we provide a new way to study the isospin structure of SRCs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.11448v2-abstract-full').style.display = 'none'; document.getElementById('2004.11448v2-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 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-20-3177, DOE/OR/23177-4956 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 102, 064004 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.07230">arXiv:2001.07230</a> <span> [<a href="https://arxiv.org/pdf/2001.07230">pdf</a>, <a href="https://arxiv.org/format/2001.07230">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/PhysRevLett.124.212501">10.1103/PhysRevLett.124.212501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing few-body nuclear dynamics via 3H and 3He (e,e'p)pn cross-section measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">R. Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=Nguyen%2C+D">D. Nguyen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauenstein%2C+F">F. Hauenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmidt%2C+A">A. Schmidt</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</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=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</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=Blyth%2C+D">D. Blyth</a> , et al. (103 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.07230v3-abstract-short" style="display: inline;"> We report the first measurement of the \eep three-body breakup reaction cross sections in helium-3 ($^3$He) and tritium ($^3$H) at large momentum transfer ($\langle Q^2 \rangle \approx 1.9$ (GeV/c)$^2$) and $x_B>1$ kinematics, where the cross section should be sensitive to quasielastic (QE) scattering from single nucleons. The data cover missing momenta $40 \le p_{miss} \le 500$ MeV/c that, in the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.07230v3-abstract-full').style.display = 'inline'; document.getElementById('2001.07230v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.07230v3-abstract-full" style="display: none;"> We report the first measurement of the \eep three-body breakup reaction cross sections in helium-3 ($^3$He) and tritium ($^3$H) at large momentum transfer ($\langle Q^2 \rangle \approx 1.9$ (GeV/c)$^2$) and $x_B>1$ kinematics, where the cross section should be sensitive to quasielastic (QE) scattering from single nucleons. The data cover missing momenta $40 \le p_{miss} \le 500$ MeV/c that, in the QE limit with no rescattering, equals the initial momentum of the probed nucleon. The measured cross sections are compared with state-of-the-art ab-initio calculations. Overall good agreement, within $\pm20\%$, is observed between data and calculations for the full $p_{miss}$ range for $^3$H and for $100 \le p_{miss} \le 350$ MeV/c for $^3$He. Including the effects of rescattering of the outgoing nucleon improves agreement with the data at $p_{miss} > 250$ MeV/c and suggests contributions from charge-exchange (SCX) rescattering. The isoscalar sum of $^3$He plus $^3$H, which is largely insensitive to SCX, is described by calculations to within the accuracy of the data over the entire $p_{miss}$ range. This validates current models of the ground state of the three-nucleon system up to very high initial nucleon momenta of $500$ MeV/c. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.07230v3-abstract-full').style.display = 'none'; document.getElementById('2001.07230v3-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 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in PRL. 8 pages, 3 figures, and online supplementary materials</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 212501 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.11681">arXiv:1911.11681</a> <span> [<a href="https://arxiv.org/pdf/1911.11681">pdf</a>, <a href="https://arxiv.org/ps/1911.11681">ps</a>, <a href="https://arxiv.org/format/1911.11681">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.100.065204">10.1103/PhysRevC.100.065204 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exclusive $蟺^+$ electroproduction off the proton from low to high -t </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Basnet%2C+S">S. Basnet</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=Li%2C+W+B">W. B. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Blok%2C+H+P">H. P. Blok</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">T. Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E+J">E. J. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+C+C">C. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibson%2C+E">E. Gibson</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Jin%2C+S">S. Jin</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=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=King%2C+P+M">P. M. King</a>, <a href="/search/nucl-ex?searchtype=author&query=Kovaltchouk%2C+V">V. Kovaltchouk</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+J">J. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=Lolos%2C+G+J">G. J. Lolos</a> , et al. (27 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="1911.11681v1-abstract-short" style="display: inline;"> Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. Purpose: To study the transition between non-perturbative and perturbative Quantum Chromodyanmics as the square of four momentum transfer to the struck proton, -t, is increased… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.11681v1-abstract-full').style.display = 'inline'; document.getElementById('1911.11681v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.11681v1-abstract-full" style="display: none;"> Background: Measurements of exclusive meson production are a useful tool in the study of hadronic structure. In particular, one can discern the relevant degrees of freedom at different distance scales through these studies. Purpose: To study the transition between non-perturbative and perturbative Quantum Chromodyanmics as the square of four momentum transfer to the struck proton, -t, is increased. Method: Cross sections for the $^1$H(e,e'$蟺^+$)n reaction were measured over the -t range of 0.272 to 2.127 GeV$^2$ with limited azimuthal coverage at fixed beam energy of 4.709 GeV, Q$^2$ of 2.4 GeV$^2$ and W of 2.0 GeV at the Thomas Jefferson National Accelerator Facility (JLab) Hall C. Results: The -t dependence of the measured $蟺^+$ electroproduction cross section generally agrees with prior data from JLab Halls B and C. The data are consistent with a Regge amplitude based theoretical model, but show poor agreement with a Generalized Parton Distribution (GPD) based model. Conclusion: The agreement of cross sections with prior data implies small contribution from the interference terms, and the confirmation of the change in t-slopes between the low and high -t regions previously observed in photoproduction indicates the changing nature of the electroproduction reaction in our kinematic regime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.11681v1-abstract-full').style.display = 'none'; document.getElementById('1911.11681v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">9 pages, 5 figures Physical Review C, in press</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.00464">arXiv:1910.00464</a> <span> [<a href="https://arxiv.org/pdf/1910.00464">pdf</a>, <a href="https://arxiv.org/ps/1910.00464">ps</a>, <a href="https://arxiv.org/format/1910.00464">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> <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"> Unique Access to u-Channel Physics: Exclusive Backward-Angle Omega Meson Electroproduction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Li%2C+W+B">W. B. Li</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=Blok%2C+H+P">H. P. Blok</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">T. Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Semenov-Tian-Shansky%2C+K">K. Semenov-Tian-Shansky</a>, <a href="/search/nucl-ex?searchtype=author&query=Pire%2C+B">B. Pire</a>, <a href="/search/nucl-ex?searchtype=author&query=Szymanowski%2C+L">L. Szymanowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Laget%2C+J+-">J. -M. Laget</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E+J">E. J. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+C+C">C. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibson%2C+E+F">E. F. Gibson</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</a>, <a href="/search/nucl-ex?searchtype=author&query=Jin%2C+S">S. Jin</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=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=King%2C+P+M">P. M. King</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="1910.00464v1-abstract-short" style="display: inline;"> Backward-angle meson electroproduction above the resonance region, which was previously ignored, is anticipated to offer unique access to the three quark plus sea component of the nucleon wave function. In this letter, we present the first complete separation of the four electromagnetic structure functions above the resonance region in exclusive omega electroproduction off the proton, e + p -> e'… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00464v1-abstract-full').style.display = 'inline'; document.getElementById('1910.00464v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.00464v1-abstract-full" style="display: none;"> Backward-angle meson electroproduction above the resonance region, which was previously ignored, is anticipated to offer unique access to the three quark plus sea component of the nucleon wave function. In this letter, we present the first complete separation of the four electromagnetic structure functions above the resonance region in exclusive omega electroproduction off the proton, e + p -> e' + p + omega, at central Q^2 values of 1.60, 2.45 GeV^2 , at W = 2.21 GeV. The results of our pioneering -u ~ -u min study demonstrate the existence of a unanticipated backward-angle cross section peak and the feasibility of full L/T/LT/TT separations in this never explored kinematic territory. At Q^2 =2.45 GeV^2 , the observed dominance of sigma_T over sigma_L, is qualitatively consistent with the collinear QCD description in the near-backward regime, in which the scattering amplitude factorizes into a hard subprocess amplitude and baryon to meson transition distribution amplitudes (TDAs): universal non-perturbative objects only accessible through backward angle kinematics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.00464v1-abstract-full').style.display = 'none'; document.getElementById('1910.00464v1-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1907.08218">arXiv:1907.08218</a> <span> [<a href="https://arxiv.org/pdf/1907.08218">pdf</a>, <a href="https://arxiv.org/format/1907.08218">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 - 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 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/i2019-12885-0">10.1140/epja/i2019-12885-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Pion and Kaon Structure at the Electron-Ion Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aguilar%2C+A+C">Arlene C. Aguilar</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Zafir Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Aidala%2C+C">Christine Aidala</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+S">Salina Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">Vincent Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Bashir%2C+A">Adnan Bashir</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">Vladimir Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Binosi%2C+D">Daniele Binosi</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+L">Lei Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+C">Chen Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+M">Muyang Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Melo%2C+J+P+B+C">Jo茫o Pacheco B. C. de Melo</a>, <a href="/search/nucl-ex?searchtype=author&query=Diefenthaler%2C+M">Markus Diefenthaler</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+M">Minghui Ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">Rolf Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Frederico%2C+T">Tobias Frederico</a>, <a href="/search/nucl-ex?searchtype=author&query=Gao%2C+F">Fei Gao</a>, <a href="/search/nucl-ex?searchtype=author&query=Gothe%2C+R+W">Ralf W. Gothe</a>, <a href="/search/nucl-ex?searchtype=author&query=Hattawy%2C+M">Mohammad Hattawy</a>, <a href="/search/nucl-ex?searchtype=author&query=Hobbs%2C+T+J">Timothy J. Hobbs</a>, <a href="/search/nucl-ex?searchtype=author&query=Horn%2C+T">Tanja Horn</a>, <a href="/search/nucl-ex?searchtype=author&query=Huber%2C+G+M">Garth M. Huber</a>, <a href="/search/nucl-ex?searchtype=author&query=Jia%2C+S">Shaoyang Jia</a>, <a href="/search/nucl-ex?searchtype=author&query=Keppel%2C+C">Cynthia Keppel</a> , et al. (26 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="1907.08218v2-abstract-short" style="display: inline;"> Understanding the origin and dynamics of hadron structure and in turn that of atomic nuclei is a central goal of nuclear physics. This challenge entails the questions of how does the roughly 1 GeV mass-scale that characterizes atomic nuclei appear; why does it have the observed value; and, enigmatically, why are the composite Nambu-Goldstone (NG) bosons in quantum chromodynamics (QCD) abnormally l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.08218v2-abstract-full').style.display = 'inline'; document.getElementById('1907.08218v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.08218v2-abstract-full" style="display: none;"> Understanding the origin and dynamics of hadron structure and in turn that of atomic nuclei is a central goal of nuclear physics. This challenge entails the questions of how does the roughly 1 GeV mass-scale that characterizes atomic nuclei appear; why does it have the observed value; and, enigmatically, why are the composite Nambu-Goldstone (NG) bosons in quantum chromodynamics (QCD) abnormally light in comparison? In this perspective, we provide an analysis of the mass budget of the pion and proton in QCD; discuss the special role of the kaon, which lies near the boundary between dominance of strong and Higgs mass-generation mechanisms; and explain the need for a coherent effort in QCD phenomenology and continuum calculations, in exa-scale computing as provided by lattice QCD, and in experiments to make progress in understanding the origins of hadron masses and the distribution of that mass within them. We compare the unique capabilities foreseen at the electron-ion collider (EIC) with those at the hadron-electron ring accelerator (HERA), the only previous electron-proton collider; and describe five key experimental measurements, enabled by the EIC and aimed at delivering fundamental insights that will generate concrete answers to the questions of how mass and structure arise in the pion and kaon, the Standard Model's NG modes, whose surprisingly low mass is critical to the evolution of our Universe. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.08218v2-abstract-full').style.display = 'none'; document.getElementById('1907.08218v2-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 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">16 pages, 12 figures, to appear in the European Physical Journal A - "Hadrons and Nuclei"</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> NJU-INP 001/19 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1906.09419">arXiv:1906.09419</a> <span> [<a href="https://arxiv.org/pdf/1906.09419">pdf</a>, <a href="https://arxiv.org/format/1906.09419">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"> Physics with Positron Beams at Jefferson Lab 12 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/nucl-ex?searchtype=author&query=Albayrak%2C+I">I. Albayrak</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=D%27Angelo%2C+A">A. D'Angelo</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Barion%2C+L">L. Barion</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdnikov%2C+V">V. Berdnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J">J. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A">A. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bond%C3%AC%2C+M">M. Bond矛</a>, <a href="/search/nucl-ex?searchtype=author&query=Brinkmann%2C+K+-">K. -T. Brinkmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+B">B. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkert%2C+V">V. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+T">T. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardman%2C+L">L. Cardman</a>, <a href="/search/nucl-ex?searchtype=author&query=Carmignotto%2C+M">M. Carmignotto</a> , et al. (102 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1906.09419v1-abstract-short" style="display: inline;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context of the Hadronic Physics program at the Jefferson Laboratory (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of the nucleon, in both the elastic… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.09419v1-abstract-full').style.display = 'inline'; document.getElementById('1906.09419v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1906.09419v1-abstract-full" style="display: none;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental program at the next generation of lepton accelerators. In the context of the Hadronic Physics program at the Jefferson Laboratory (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of the nucleon, in both the elastic and the deep-inelastic regimes. For instance, elastic scattering of (un)polarized electrons and positrons off the nucleon allows for a model independent determination of the electromagnetic form factors of the nucleon. Also, the deeply virtual Compton scattering of (un)polarized electrons and positrons allows us to separate unambiguously the different contributions to the cross section of the lepto-production of photons, enabling an accurate determination of the nucleon Generalized Parton Distributions (GPDs), and providing an access to its Gravitational Form Factors. Furthermore, positron beams offer the possibility of alternative tests of the Standard Model through the search of a dark photon or the precise measurement of electroweak couplings. This letter proposes to develop an experimental positron program at JLab to perform unique high impact measurements with respect to the two-photon exchange problem, the determination of the proton and the neutron GPDs, and the search for the $A^{\prime}$ dark photon. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1906.09419v1-abstract-full').style.display = 'none'; document.getElementById('1906.09419v1-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 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Letter-of-Intent to Jefferson Lab PAC46</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Jefferson Lab LOI12-18-004 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.00541">arXiv:1905.00541</a> <span> [<a href="https://arxiv.org/pdf/1905.00541">pdf</a>, <a href="https://arxiv.org/format/1905.00541">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"> Probing for high momentum protons in $^4$He via the $^4He(e,e'p)X$ reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Iqbal%2C+S">S. Iqbal</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/nucl-ex?searchtype=author&query=Ivanov%2C+M">M. Ivanov</a>, <a href="/search/nucl-ex?searchtype=author&query=See%2C+N">N. See</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Higinbotham%2C+D+W">D. W. Higinbotham</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyd%2C+C">C. Boyd</a>, <a href="/search/nucl-ex?searchtype=author&query=Gadsby%2C+A">A. Gadsby</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilad%2C+S">S. Gilad</a>, <a href="/search/nucl-ex?searchtype=author&query=Saha%2C+A">A. Saha</a>, <a href="/search/nucl-ex?searchtype=author&query=Udias%2C+J+M">J. M. Udias</a>, <a href="/search/nucl-ex?searchtype=author&query=Goodwill%2C+J+S">J. S. Goodwill</a>, <a href="/search/nucl-ex?searchtype=author&query=Finton%2C+D">D. Finton</a>, <a href="/search/nucl-ex?searchtype=author&query=Boyer%2C+A">A. Boyer</a>, <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z">Z. Ye</a>, <a href="/search/nucl-ex?searchtype=author&query=Solvignon%2C+P">P. Solvignon</a>, <a href="/search/nucl-ex?searchtype=author&query=Aguilera%2C+P">P. Aguilera</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Z. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B">B. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anez%2C+D">D. Anez</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a> , et al. (85 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1905.00541v5-abstract-short" style="display: inline;"> Experimental cross sections for the $^4He(e,e'p)X$ reaction up to a missing momentum of 0.632 GeV/$c$ at $x_B=1.24$ and $Q^2$=2(GeV/$c$)$^2$ are reported. The data are compared to Relativistic Distorted Wave Impulse Approximation(RDWIA) calculations for $^4He(e,e'p)^3H$ channel. Significantly more events in the triton mass region are measured for $p_{m}$$>$0.45 GeV/$c$ than are predicted by the th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.00541v5-abstract-full').style.display = 'inline'; document.getElementById('1905.00541v5-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.00541v5-abstract-full" style="display: none;"> Experimental cross sections for the $^4He(e,e'p)X$ reaction up to a missing momentum of 0.632 GeV/$c$ at $x_B=1.24$ and $Q^2$=2(GeV/$c$)$^2$ are reported. The data are compared to Relativistic Distorted Wave Impulse Approximation(RDWIA) calculations for $^4He(e,e'p)^3H$ channel. Significantly more events in the triton mass region are measured for $p_{m}$$>$0.45 GeV/$c$ than are predicted by the theoretical model, suggesting that the effects of initial-state multi-nucleon correlations are stronger than expected by the RDWIA model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.00541v5-abstract-full').style.display = 'none'; document.getElementById('1905.00541v5-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 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to PRC</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-19-2934 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.12535">arXiv:1903.12535</a> <span> [<a href="https://arxiv.org/pdf/1903.12535">pdf</a>, <a href="https://arxiv.org/ps/1903.12535">ps</a>, <a href="https://arxiv.org/format/1903.12535">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/PhysRevLett.123.042501">10.1103/PhysRevLett.123.042501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for flavor dependence in nuclear quark behavior </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomin%2C+N">N. Fomin</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="1903.12535v1-abstract-short" style="display: inline;"> The observed correlation between the EMC effect and the contribution of short-range correlations (SRCs) in nuclei suggests that the modification of the quark distributions of bound protons and neutrons might occur within SRCs. This raises the possibility that the EMC effect may have an isospin dependence arising from the np dominance of SRCs. We discuss previous attempts to test this possibility a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.12535v1-abstract-full').style.display = 'inline'; document.getElementById('1903.12535v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.12535v1-abstract-full" style="display: none;"> The observed correlation between the EMC effect and the contribution of short-range correlations (SRCs) in nuclei suggests that the modification of the quark distributions of bound protons and neutrons might occur within SRCs. This raises the possibility that the EMC effect may have an isospin dependence arising from the np dominance of SRCs. We discuss previous attempts to test this possibility and perform a new analysis of existing data. We find no experimental support for the observation of an isospin dependence of the EMC effect. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.12535v1-abstract-full').style.display = 'none'; document.getElementById('1903.12535v1-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 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">5 pages, 4 figures, submitted for publication</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 123, 042501 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.05453">arXiv:1903.05453</a> <span> [<a href="https://arxiv.org/pdf/1903.05453">pdf</a>, <a href="https://arxiv.org/format/1903.05453">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 - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Opportunities for Nuclear Physics & Quantum Information Science </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Clo%C3%ABt%2C+I+C">Ian C. Clo毛t</a>, <a href="/search/nucl-ex?searchtype=author&query=Dietrich%2C+M+R">Matthew R. Dietrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazavov%2C+A">Alexei Bazavov</a>, <a href="/search/nucl-ex?searchtype=author&query=Bishof%2C+M">Michael Bishof</a>, <a href="/search/nucl-ex?searchtype=author&query=Freese%2C+A">Adam Freese</a>, <a href="/search/nucl-ex?searchtype=author&query=Gorshkov%2C+A+V">Alexey V. Gorshkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Grassellino%2C+A">Anna Grassellino</a>, <a href="/search/nucl-ex?searchtype=author&query=Hafidi%2C+K">Kawtar Hafidi</a>, <a href="/search/nucl-ex?searchtype=author&query=Jacob%2C+Z">Zubin Jacob</a>, <a href="/search/nucl-ex?searchtype=author&query=McGuigan%2C+M">Michael McGuigan</a>, <a href="/search/nucl-ex?searchtype=author&query=Meurice%2C+Y">Yannick Meurice</a>, <a href="/search/nucl-ex?searchtype=author&query=Meziani%2C+Z">Zein-Eddine Meziani</a>, <a href="/search/nucl-ex?searchtype=author&query=Mueller%2C+P">Peter Mueller</a>, <a href="/search/nucl-ex?searchtype=author&query=Muschik%2C+C">Christine Muschik</a>, <a href="/search/nucl-ex?searchtype=author&query=Osborn%2C+J">James Osborn</a>, <a href="/search/nucl-ex?searchtype=author&query=Otten%2C+M">Matthew Otten</a>, <a href="/search/nucl-ex?searchtype=author&query=Petreczky%2C+P">Peter Petreczky</a>, <a href="/search/nucl-ex?searchtype=author&query=Polakovic%2C+T">Tomas Polakovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Poon%2C+A">Alan Poon</a>, <a href="/search/nucl-ex?searchtype=author&query=Pooser%2C+R">Raphael Pooser</a>, <a href="/search/nucl-ex?searchtype=author&query=Roggero%2C+A">Alessandro Roggero</a>, <a href="/search/nucl-ex?searchtype=author&query=Saffman%2C+M">Mark Saffman</a>, <a href="/search/nucl-ex?searchtype=author&query=VanDevender%2C+B">Brent VanDevender</a>, <a href="/search/nucl-ex?searchtype=author&query=Zhang%2C+J">Jiehang Zhang</a> , et al. (1 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="1903.05453v2-abstract-short" style="display: inline;"> This whitepaper is an outcome of the workshop Intersections between Nuclear Physics and Quantum Information held at Argonne National Laboratory on 28-30 March 2018 [www.phy.anl.gov/npqi2018/]. The workshop brought together 116 national and international experts in nuclear physics and quantum information science to explore opportunities for the two fields to collaborate on topics of interest to the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.05453v2-abstract-full').style.display = 'inline'; document.getElementById('1903.05453v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.05453v2-abstract-full" style="display: none;"> This whitepaper is an outcome of the workshop Intersections between Nuclear Physics and Quantum Information held at Argonne National Laboratory on 28-30 March 2018 [www.phy.anl.gov/npqi2018/]. The workshop brought together 116 national and international experts in nuclear physics and quantum information science to explore opportunities for the two fields to collaborate on topics of interest to the U.S. Department of Energy (DOE) Office of Science, Office of Nuclear Physics, and more broadly to U.S. society and industry. The workshop consisted of 22 invited and 10 contributed talks, as well as three panel discussion sessions. Topics discussed included quantum computation, quantum simulation, quantum sensing, nuclear physics detectors, nuclear many-body problem, entanglement at collider energies, and lattice gauge theories. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.05453v2-abstract-full').style.display = 'none'; document.getElementById('1903.05453v2-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 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">22 pages, Outcome of the workshop: Intersections between Nuclear Physics and Quantum Information</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1902.10572">arXiv:1902.10572</a> <span> [<a href="https://arxiv.org/pdf/1902.10572">pdf</a>, <a href="https://arxiv.org/format/1902.10572">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/10.1088/1361-6471/ab2731">10.1088/1361-6471/ab2731 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exposing Novel Quark and Gluon Effects in Nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Clo%C3%ABt%2C+I+C">I. C. Clo毛t</a>, <a href="/search/nucl-ex?searchtype=author&query=Dupr%C3%A9%2C+R">R. Dupr茅</a>, <a href="/search/nucl-ex?searchtype=author&query=Riordan%2C+S">S. Riordan</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Cosyn%2C+W">W. Cosyn</a>, <a href="/search/nucl-ex?searchtype=author&query=Fomin%2C+N">N. Fomin</a>, <a href="/search/nucl-ex?searchtype=author&query=Freese%2C+A">A. Freese</a>, <a href="/search/nucl-ex?searchtype=author&query=Fucini%2C+S">S. Fucini</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Miller%2C+G+A">G. A. Miller</a>, <a href="/search/nucl-ex?searchtype=author&query=Pace%2C+E">E. Pace</a>, <a href="/search/nucl-ex?searchtype=author&query=Platchkov%2C+S">S. Platchkov</a>, <a href="/search/nucl-ex?searchtype=author&query=Reimer%2C+P+E">P. E. Reimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Scopetta%2C+S">S. Scopetta</a>, <a href="/search/nucl-ex?searchtype=author&query=Thomas%2C+A+W">A. W. Thomas</a>, <a href="/search/nucl-ex?searchtype=author&query=Zurita%2C+P">P. Zurita</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="1902.10572v2-abstract-short" style="display: inline;"> The fundamental theory of the strong interaction -- quantum chromodynamics (QCD) -- provides the foundational framework with which to describe and understand the key properties of atomic nuclei. A deep understanding of the explicit role of quarks and gluons in nuclei remains elusive however, as these effects have thus far been well-disguised by confinement effects in QCD which are encapsulated by… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.10572v2-abstract-full').style.display = 'inline'; document.getElementById('1902.10572v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1902.10572v2-abstract-full" style="display: none;"> The fundamental theory of the strong interaction -- quantum chromodynamics (QCD) -- provides the foundational framework with which to describe and understand the key properties of atomic nuclei. A deep understanding of the explicit role of quarks and gluons in nuclei remains elusive however, as these effects have thus far been well-disguised by confinement effects in QCD which are encapsulated by a successful description in terms of effective hadronic degrees of freedom. The observation of the EMC effect has provided an enduring indication for explicit QCD effects in nuclei, and points to the medium modification of the bound protons and neutrons in the nuclear medium. Understanding the EMC effect is a major challenge for modern nuclear physics, and several key questions remain, such as understanding its flavor, spin, and momentum dependence. This manuscript provides a contemporary snapshot of our understanding of the role of QCD in nuclei and outlines possible pathways in experiment and theory that will help deepen our understanding of nuclei in the context of QCD. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.10572v2-abstract-full').style.display = 'none'; document.getElementById('1902.10572v2-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 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1902.06358">arXiv:1902.06358</a> <span> [<a href="https://arxiv.org/pdf/1902.06358">pdf</a>, <a href="https://arxiv.org/format/1902.06358">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.2019.134890">10.1016/j.physletb.2019.134890 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Comparing proton momentum distributions in $A=2$ and 3 nuclei via $^2$H $^3$H and $^3$He $(e, e'p)$ measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Cruz-Torres%2C+R">R. Cruz-Torres</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauenstein%2C+F">F. Hauenstein</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmidt%2C+A">A. Schmidt</a>, <a href="/search/nucl-ex?searchtype=author&query=Nguyen%2C+D">D. Nguyen</a>, <a href="/search/nucl-ex?searchtype=author&query=Abrams%2C+D">D. Abrams</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsalmi%2C+S">S. Alsalmi</a>, <a href="/search/nucl-ex?searchtype=author&query=Androic%2C+D">D. Androic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Atac%2C+H">H. Atac</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=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</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=Blyth%2C+D">D. Blyth</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a> , et al. (103 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1902.06358v3-abstract-short" style="display: inline;"> We report the first measurement of the $(e,e'p)$ reaction cross-section ratios for Helium-3 ($^3$He), Tritium ($^3$H), and Deuterium ($d$). The measurement covered a missing momentum range of $40 \le p_{miss} \le 550$ MeV$/c$, at large momentum transfer ($\langle Q^2 \rangle \approx 1.9$ (GeV$/c$)$^2$) and $x_B>1$, which minimized contributions from non quasi-elastic (QE) reaction mechanisms. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.06358v3-abstract-full').style.display = 'inline'; document.getElementById('1902.06358v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1902.06358v3-abstract-full" style="display: none;"> We report the first measurement of the $(e,e'p)$ reaction cross-section ratios for Helium-3 ($^3$He), Tritium ($^3$H), and Deuterium ($d$). The measurement covered a missing momentum range of $40 \le p_{miss} \le 550$ MeV$/c$, at large momentum transfer ($\langle Q^2 \rangle \approx 1.9$ (GeV$/c$)$^2$) and $x_B>1$, which minimized contributions from non quasi-elastic (QE) reaction mechanisms. The data is compared with plane-wave impulse approximation (PWIA) calculations using realistic spectral functions and momentum distributions. The measured and PWIA-calculated cross-section ratios for $^3$He$/d$ and $^3$H$/d$ extend to just above the typical nucleon Fermi-momentum ($k_F \approx 250$ MeV$/c$) and differ from each other by $\sim 20\%$, while for $^3$He/$^3$H they agree within the measurement accuracy of about 3\%. At momenta above $k_F$, the measured $^3$He/$^3$H ratios differ from the calculation by $20\% - 50\%$. Final state interaction (FSI) calculations using the generalized Eikonal Approximation indicate that FSI should change the $^3$He/$^3$H cross-section ratio for this measurement by less than 5\%. If these calculations are correct, then the differences at large missing momenta between the $^3$He/$^3$H experimental and calculated ratios could be due to the underlying $NN$ interaction, and thus could provide new constraints on the previously loosely-constrained short-distance parts of the $NN$ interaction. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1902.06358v3-abstract-full').style.display = 'none'; document.getElementById('1902.06358v3-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, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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, 3 figures (4 panels)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-19-2893; LA-UR-18-31091 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 797 (2019) 134890 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.09994">arXiv:1901.09994</a> <span> [<a href="https://arxiv.org/pdf/1901.09994">pdf</a>, <a href="https://arxiv.org/ps/1901.09994">ps</a>, <a href="https://arxiv.org/format/1901.09994">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> <p class="title is-5 mathjax"> Probing nucleon's spin structures with polarized Drell-Yan in the Fermilab SpinQuest experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+A">Andrew Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Peng%2C+J+C">J. C. Peng</a>, <a href="/search/nucl-ex?searchtype=author&query=Leung%2C+H">H. Leung</a>, <a href="/search/nucl-ex?searchtype=author&query=Tian%2C+M">M. Tian</a>, <a href="/search/nucl-ex?searchtype=author&query=Makins%2C+N">N. Makins</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+M">M. Brooks</a>, <a href="/search/nucl-ex?searchtype=author&query=Klein%2C+A">A. Klein</a>, <a href="/search/nucl-ex?searchtype=author&query=Kleinjan%2C+D">D. Kleinjan</a>, <a href="/search/nucl-ex?searchtype=author&query=Liu%2C+K">K. Liu</a>, <a href="/search/nucl-ex?searchtype=author&query=McCumber%2C+M">M. McCumber</a>, <a href="/search/nucl-ex?searchtype=author&query=McGaughey%2C+P">P. McGaughey</a>, <a href="/search/nucl-ex?searchtype=author&query=Miraal-Martinez%2C+J">J. Miraal-Martinez</a>, <a href="/search/nucl-ex?searchtype=author&query=Da+Silva%2C+C">C. Da Silva</a>, <a href="/search/nucl-ex?searchtype=author&query=Uemura%2C+S">Sho Uemura</a>, <a href="/search/nucl-ex?searchtype=author&query=Jen%2C+M">M. Jen</a>, <a href="/search/nucl-ex?searchtype=author&query=Li%2C+X">X. Li</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Geesaman%2C+D">D. Geesaman</a>, <a href="/search/nucl-ex?searchtype=author&query=Reimer%2C+P+E">P. E. Reimer</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+C">C. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Tesarek%2C+R+J">R. J. Tesarek</a>, <a href="/search/nucl-ex?searchtype=author&query=Sawada%2C+S">S. Sawada</a>, <a href="/search/nucl-ex?searchtype=author&query=Lorenzon%2C+W">W. Lorenzon</a>, <a href="/search/nucl-ex?searchtype=author&query=Raymond%2C+R">R. Raymond</a>, <a href="/search/nucl-ex?searchtype=author&query=Slifer%2C+K">K. Slifer</a> , et al. (29 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1901.09994v2-abstract-short" style="display: inline;"> Although the proton was discovered about 100 years ago, its spin structure still remains a mystery. Recent studies suggest that the orbital angular momentum of sea quarks could significantly contribute to the proton's spin. The SeaQuest experiment, which recently completed data collection, probed the unpolarized light quark sea distributions of the proton using the Drell-Yan process. Its successor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.09994v2-abstract-full').style.display = 'inline'; document.getElementById('1901.09994v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.09994v2-abstract-full" style="display: none;"> Although the proton was discovered about 100 years ago, its spin structure still remains a mystery. Recent studies suggest that the orbital angular momentum of sea quarks could significantly contribute to the proton's spin. The SeaQuest experiment, which recently completed data collection, probed the unpolarized light quark sea distributions of the proton using the Drell-Yan process. Its successor, the SpinQuest (E1039), will access the $\bar{u}$ and $\bar{d}$ Sivers functions using polarized NH$_3$ and ND$_3$ targets. A non-zero Sivers asymmetry, observed in SpinQuest, would be a strong indication of non-zero sea-quark orbital angular momentum. The SpinQuest experiment can also probe the sea quark's transversity distribution, which is relevant for the determination of proton's tensor charge. Recent study suggests that sea-quarks might contribute significantly to deuteron's tensor polarized structure functions. This can be further probed in SpinQuest using tensor polarized ND$_3$ target. The current status and future plan of the experiment are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.09994v2-abstract-full').style.display = 'none'; document.getElementById('1901.09994v2-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 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.03667">arXiv:1810.03667</a> <span> [<a href="https://arxiv.org/pdf/1810.03667">pdf</a>, <a href="https://arxiv.org/format/1810.03667">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Inclusive Studies of Short-Range Correlations: Overview and New Results </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z">Zhihong Ye</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</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="1810.03667v2-abstract-short" style="display: inline;"> We present an overview of Short-Range Correlations (SRC) studies using the inclusive measurement of the electron scattering off nuclei. A brief introduction of the origin of the SRC is given, followed by the survey of the two-nucleon SRC (2N-SRC) study and its interesting connection to the EMC effect. A discussion of the three-nucleon SRC study (3N-SRC) measured by the Jefferson Lab's Hall B and H… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.03667v2-abstract-full').style.display = 'inline'; document.getElementById('1810.03667v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.03667v2-abstract-full" style="display: none;"> We present an overview of Short-Range Correlations (SRC) studies using the inclusive measurement of the electron scattering off nuclei. A brief introduction of the origin of the SRC is given, followed by the survey of the two-nucleon SRC (2N-SRC) study and its interesting connection to the EMC effect. A discussion of the three-nucleon SRC study (3N-SRC) measured by the Jefferson Lab's Hall B and Hall C experiments which showed contradictory results is given and, most importantly, we report a new result from the Hall A E08-014 experiment which was dedicated on studying 3N-SRC. Our high precision 4He/3He cross section ratios at the x > 2 region do not show a 3N-SRC plateau as predicted by the naive SRC model. To further investigate the 3N-SRC as well as the Isospin effect of the SRC, we have designed several approved experiments in Hall A and in Hall C, including the Tritium experiments using the mirror nuclei (3H and 3He) which are currently running in Hall A. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.03667v2-abstract-full').style.display = 'none'; document.getElementById('1810.03667v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 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">12 pages, 10 figures, Conference Proceeding for the presentation at CIPANP 2018, Palm Springs, CA, May 29 - June 3, 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.06061">arXiv:1807.06061</a> <span> [<a href="https://arxiv.org/pdf/1807.06061">pdf</a>, <a href="https://arxiv.org/format/1807.06061">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/PhysRevLett.123.022501">10.1103/PhysRevLett.123.022501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of Non-Singlet Moments of the Nucleon Structure Functions and Comparison to Predictions from Lattice QCD for $Q^2 = 4$ $\rm GeV^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Albayrak%2C+I">I. Albayrak</a>, <a href="/search/nucl-ex?searchtype=author&query=Mamyan%2C+V">V. Mamyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmidouch%2C+A">A. Ahmidouch</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodek%2C+A">A. Bodek</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosted%2C+P">P. Bosted</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradford%2C+R">R. Bradford</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E">E. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruell%2C+A">A. Bruell</a>, <a href="/search/nucl-ex?searchtype=author&query=Butuceanu%2C+C">C Butuceanu</a>, <a href="/search/nucl-ex?searchtype=author&query=Coleman%2C+S+J">S. J. Coleman</a>, <a href="/search/nucl-ex?searchtype=author&query=Commisso%2C+M">M. Commisso</a>, <a href="/search/nucl-ex?searchtype=author&query=Connell%2C+S+H">S. H. Connell</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=Danagoulian%2C+S">S. Danagoulian</a>, <a href="/search/nucl-ex?searchtype=author&query=Daniel%2C+A">A. Daniel</a>, <a href="/search/nucl-ex?searchtype=author&query=Day%2C+D+B">D. B. Day</a>, <a href="/search/nucl-ex?searchtype=author&query=Dhamija%2C+S">S. Dhamija</a>, <a href="/search/nucl-ex?searchtype=author&query=Dunne%2C+J">J. Dunne</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutta%2C+D">D. Dutta</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Gasparian%2C+A">A. Gasparian</a> , et al. (53 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.06061v3-abstract-short" style="display: inline;"> We present extractions of the nucleon non-singlet moments utilizing new precision data on the deuteron $F_2$ structure function at large Bjorken-$x$ determined via the Rosenbluth separation technique at Jefferson Lab Experimental Hall C. These new data are combined with a complementary set of data on the proton previously measured in Hall C at similar kinematics and world data sets on the proton a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.06061v3-abstract-full').style.display = 'inline'; document.getElementById('1807.06061v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.06061v3-abstract-full" style="display: none;"> We present extractions of the nucleon non-singlet moments utilizing new precision data on the deuteron $F_2$ structure function at large Bjorken-$x$ determined via the Rosenbluth separation technique at Jefferson Lab Experimental Hall C. These new data are combined with a complementary set of data on the proton previously measured in Hall C at similar kinematics and world data sets on the proton and deuteron at lower $x$ measured at SLAC and CERN. The new Jefferson Lab data provide coverage of the upper third of the $x$ range, crucial for precision determination of the higher moments. In contrast to previous extractions, these moments have been corrected for nuclear effects in the deuteron using a new global fit to the deuteron and proton data. The obtained experimental moments represent an order of magnitude improvement in precision over previous extractions using high $x$ data. Moreover, recent exciting developments in Lattice QCD calculations provide a first ever comparison of these new experimental results with calculations of moments carried out at the physical pion mass, as well as a new approach which first calculates the quark distributions directly before determining moments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.06061v3-abstract-full').style.display = 'none'; document.getElementById('1807.06061v3-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 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 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">Journal ref:</span> Phys. Rev. Lett. 123, 022501 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.12441">arXiv:1805.12441</a> <span> [<a href="https://arxiv.org/pdf/1805.12441">pdf</a>, <a href="https://arxiv.org/format/1805.12441">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/s10050-020-00135-7">10.1140/epja/s10050-020-00135-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dispersive Corrections to the Born Approximation in Elastic Electron-Nucleus Scattering in the Intermediate Energy Regime </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Gueye%2C+P">P. Gueye</a>, <a href="/search/nucl-ex?searchtype=author&query=Glister%2C+A+A+K+J">A. A. Kabir J. Glister</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+B+W">B. W. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Gilman%2C+R">R. Gilman</a>, <a href="/search/nucl-ex?searchtype=author&query=Higinbotham%2C+D+W">D. W. Higinbotham</a>, <a href="/search/nucl-ex?searchtype=author&query=Piasetzky%2C+E">E. Piasetzky</a>, <a href="/search/nucl-ex?searchtype=author&query=Ron%2C+G">G. Ron</a>, <a href="/search/nucl-ex?searchtype=author&query=Sarty%2C+A+J">A. J. Sarty</a>, <a href="/search/nucl-ex?searchtype=author&query=Strauch%2C+S">S. Strauch</a>, <a href="/search/nucl-ex?searchtype=author&query=Adeyemi%2C+A">A. Adeyemi</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+W">W. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Arenhovel%2C+H">H. Arenhovel</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/nucl-ex?searchtype=author&query=Berman%2C+B+L">B. L. Berman</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E">E. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Camsonne%2C+A">A. Camsonne</a>, <a href="/search/nucl-ex?searchtype=author&query=Calarco%2C+J">J. Calarco</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+P">J. P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/nucl-ex?searchtype=author&query=Chudakov%2C+E">E. Chudakov</a>, <a href="/search/nucl-ex?searchtype=author&query=Coman%2C+L">L. Coman</a> , et al. (67 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1805.12441v3-abstract-short" style="display: inline;"> Measurements of elastic electron scattering data within the past decade have highlighted two-photon exchange contributions as a necessary ingredient in theoretical calculations to precisely evaluate hydrogen elastic scattering cross sections. This correction can modify the cross section at the few percent level. In contrast, dispersive effects can cause significantly larger changes from the Born a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.12441v3-abstract-full').style.display = 'inline'; document.getElementById('1805.12441v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.12441v3-abstract-full" style="display: none;"> Measurements of elastic electron scattering data within the past decade have highlighted two-photon exchange contributions as a necessary ingredient in theoretical calculations to precisely evaluate hydrogen elastic scattering cross sections. This correction can modify the cross section at the few percent level. In contrast, dispersive effects can cause significantly larger changes from the Born approximation. The purpose of this experiment is to extract the carbon-12 elastic cross section around the first diffraction minimum, where the Born term contributions to the cross section are small to maximize the sensitivity to dispersive effects. The analysis uses the LEDEX data from the high resolution Jefferson Lab Hall A spectrometers to extract the cross sections near the first diffraction minimum of 12C at beam energies of 362 MeV and 685 MeV. The results are in very good agreement with previous world data, although with less precision. The average deviation from a static nuclear charge distribution expected from linear and quadratic fits indicate a 30.6% contribution of dispersive effects to the cross section at 1 GeV. The magnitude of the dispersive effects near the first diffraction minimum of 12C has been confirmed to be large with a strong energy dependence and could account for a large fraction of the magnitude for the observed quenching of the longitudinal nuclear response. These effects could also be important for nuclei radii extracted from parity-violating asymmetries measured near a diffraction minimum. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.12441v3-abstract-full').style.display = 'none'; document.getElementById('1805.12441v3-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 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 10 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-18-2707 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. A 56 (2020) 126 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1801.01536">arXiv:1801.01536</a> <span> [<a href="https://arxiv.org/pdf/1801.01536">pdf</a>, <a href="https://arxiv.org/ps/1801.01536">ps</a>, <a href="https://arxiv.org/format/1801.01536">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.97.025204">10.1103/PhysRevC.97.025204 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Separated Kaon Electroproduction Cross Section and the Kaon Form Factor from 6 GeV JLab Data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Carmignotto%2C+M">M. Carmignotto</a>, <a href="/search/nucl-ex?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Barrett%2C+B">B. Barrett</a>, <a href="/search/nucl-ex?searchtype=author&query=Beise%2C+E+J">E. J. Beise</a>, <a href="/search/nucl-ex?searchtype=author&query=Blok%2C+H+P">H. P. Blok</a>, <a href="/search/nucl-ex?searchtype=author&query=Boeglin%2C+W">W. Boeglin</a>, <a href="/search/nucl-ex?searchtype=author&query=Brash%2C+E+J">E. J. Brash</a>, <a href="/search/nucl-ex?searchtype=author&query=Breuer%2C+H">H. Breuer</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+C+C">C. C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/nucl-ex?searchtype=author&query=Dittmann%2C+A">A. Dittmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Ent%2C+R">R. Ent</a>, <a href="/search/nucl-ex?searchtype=author&query=Fenker%2C+H">H. Fenker</a>, <a href="/search/nucl-ex?searchtype=author&query=Gaskell%2C+D">D. Gaskell</a>, <a href="/search/nucl-ex?searchtype=author&query=Gibson%2C+E">E. Gibson</a>, <a href="/search/nucl-ex?searchtype=author&query=Holt%2C+R+J">R. J. Holt</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=Jin%2C+S">S. Jin</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=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+W">W. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=King%2C+P+M">P. M. King</a> , et al. (35 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="1801.01536v1-abstract-short" style="display: inline;"> The $^{1}H$($e,e^\prime K^+$)$螞$ reaction was studied as a function of the Mandelstam variable $-t$ using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Lab. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers $Q^2$ of 1.00, 1.36 and 2.07 GeV$^2$. The k… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.01536v1-abstract-full').style.display = 'inline'; document.getElementById('1801.01536v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1801.01536v1-abstract-full" style="display: none;"> The $^{1}H$($e,e^\prime K^+$)$螞$ reaction was studied as a function of the Mandelstam variable $-t$ using data from the E01-004 (FPI-2) and E93-018 experiments that were carried out in Hall C at the 6 GeV Jefferson Lab. The cross section was fully separated into longitudinal and transverse components, and two interference terms at four-momentum transfers $Q^2$ of 1.00, 1.36 and 2.07 GeV$^2$. The kaon form factor was extracted from the longitudinal cross section using the Regge model by Vanderhaeghen, Guidal, and Laget. The results establish the method, previously used successfully for pion analyses, for extracting the kaon form factor. Data from 12 GeV Jefferson Lab experiments are expected to have sufficient precision to distinguish between theoretical predictions, for example recent perturbative QCD calculations with modern parton distribution amplitudes. The leading-twist behavior for light mesons is predicted to set in for values of $Q^2$ between 5-10 GeV$^2$, which makes data in the few GeV regime particularly interesting. The $Q^2$ dependence at fixed $x$ and $-t$ of the longitudinal cross section we extracted seems consistent with the QCD factorization prediction within the experimental uncertainty. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.01536v1-abstract-full').style.display = 'none'; document.getElementById('1801.01536v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 97, 025204 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.07171">arXiv:1712.07171</a> <span> [<a href="https://arxiv.org/pdf/1712.07171">pdf</a>, <a href="https://arxiv.org/format/1712.07171">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/10.1063/1.5040198">10.1063/1.5040198 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Super-Rosenbluth Measurements with Electrons and Positrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Yurov%2C+M">Mikhail Yurov</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">John Arrington</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="1712.07171v1-abstract-short" style="display: inline;"> Precise measurements of the proton form factor ratio mu*GE/GM from Rosenbluth separation measurements can be combined with Polarization based extractions to provide significant constraints on two-photon exchange contributions to the elastic e-p cross section. We present an overview of JLab experiment E05-017, the high-precision Super-Rosenbluth measurements of the proton form factor taken in Hall… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07171v1-abstract-full').style.display = 'inline'; document.getElementById('1712.07171v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.07171v1-abstract-full" style="display: none;"> Precise measurements of the proton form factor ratio mu*GE/GM from Rosenbluth separation measurements can be combined with Polarization based extractions to provide significant constraints on two-photon exchange contributions to the elastic e-p cross section. We present an overview of JLab experiment E05-017, the high-precision Super-Rosenbluth measurements of the proton form factor taken in Hall C of Jefferson Lab. We then examine what precision could be obtained for Super-Rosenbluth measurements using a low-intensity positron beam at Jefferson Lab. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07171v1-abstract-full').style.display = 'none'; document.getElementById('1712.07171v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures. Conference proceedings from JPOS17 (https://www.jlab.org/conferences/JPos2017/)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.07009">arXiv:1712.07009</a> <span> [<a href="https://arxiv.org/pdf/1712.07009">pdf</a>, <a href="https://arxiv.org/format/1712.07009">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.97.065204">10.1103/PhysRevC.97.065204 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for three-nucleon short-range correlations in light nuclei </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Ye%2C+Z">Z. Ye</a>, <a href="/search/nucl-ex?searchtype=author&query=Solvignon%2C+P">P. Solvignon</a>, <a href="/search/nucl-ex?searchtype=author&query=Nguyen%2C+D">D. Nguyen</a>, <a href="/search/nucl-ex?searchtype=author&query=Aguilera%2C+P">P. Aguilera</a>, <a href="/search/nucl-ex?searchtype=author&query=Ahmed%2C+Z">Z. Ahmed</a>, <a href="/search/nucl-ex?searchtype=author&query=Albataineh%2C+H">H. Albataineh</a>, <a href="/search/nucl-ex?searchtype=author&query=Allada%2C+K">K. Allada</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+B">B. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Anez%2C+D">D. Anez</a>, <a href="/search/nucl-ex?searchtype=author&query=Aniol%2C+K">K. Aniol</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J">J. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/nucl-ex?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/nucl-ex?searchtype=author&query=Baghdasaryan%2C+H">H. Baghdasaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+A">A. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+S">S. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</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+C">C. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chen%2C+J+-">J. -P. Chen</a>, <a href="/search/nucl-ex?searchtype=author&query=Chirapatpimol%2C+K">K. Chirapatpimol</a>, <a href="/search/nucl-ex?searchtype=author&query=Cisbani%2C+E">E. Cisbani</a>, <a href="/search/nucl-ex?searchtype=author&query=Dalton%2C+M+M">M. M. Dalton</a> , et al. (78 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1712.07009v2-abstract-short" style="display: inline;"> We present new data probing short-range correlations (SRCs) in nuclei through the measurement of electron scattering off high-momentum nucleons in nuclei. The inclusive 4He/3He cross section ratio is observed to be both x and Q2 independent for 1.5 < x < 2, confirming the dominance of two- nucleon (2N) short-range correlations (SRCs). For x > 2, our data do not support a previous claim of three-nu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07009v2-abstract-full').style.display = 'inline'; document.getElementById('1712.07009v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.07009v2-abstract-full" style="display: none;"> We present new data probing short-range correlations (SRCs) in nuclei through the measurement of electron scattering off high-momentum nucleons in nuclei. The inclusive 4He/3He cross section ratio is observed to be both x and Q2 independent for 1.5 < x < 2, confirming the dominance of two- nucleon (2N) short-range correlations (SRCs). For x > 2, our data do not support a previous claim of three-nucleon (3N) correlation dominance. While contributions beyond those from stationary 2N- SRCs are observed, our data show that isolating 3N-SRCs is more complicated than for 2N-SRCs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.07009v2-abstract-full').style.display = 'none'; document.getElementById('1712.07009v2-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 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 2 figures, new experimental results from JLab E08-014</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 97, 065204 (2018) </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Arrington%2C+J&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Arrington%2C+J&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Arrington%2C+J&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> <li> <a href="/search/?searchtype=author&query=Arrington%2C+J&start=100" class="pagination-link " aria-label="Page 3" aria-current="page">3 </a> </li> <li> <a href="/search/?searchtype=author&query=Arrington%2C+J&start=150" class="pagination-link " aria-label="Page 4" aria-current="page">4 </a> </li> </ul> </nav> <div class="is-hidden-tablet">  <span class="help" 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