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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.16785">arXiv:2203.16785</a> <span> [<a href="https://arxiv.org/pdf/2203.16785">pdf</a>, <a href="https://arxiv.org/format/2203.16785">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.107.015201">10.1103/PhysRevC.107.015201 <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 Neutron in Deuterium in the Resonance Region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Tian%2C+Y">Y. Tian</a>, <a href="/search/nucl-ex?searchtype=author&query=Gothe%2C+R+W">R. W. Gothe</a>, <a href="/search/nucl-ex?searchtype=author&query=Mokeev%2C+V+I">V. I. Mokeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Hollis%2C+G">G. Hollis</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M+J">M. J. Amaryan</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=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=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=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Benkel%2C+B">B. Benkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianconi%2C+A">A. Bianconi</a>, <a href="/search/nucl-ex?searchtype=author&query=Biondo%2C+L">L. Biondo</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A">A. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boss%C3%B9%2C+F">F. Boss霉</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</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+T">K. T. Brinkmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Bueltmann%2C+S">S. Bueltmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Bulumulla%2C+D">D. Bulumulla</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkert%2C+V+D">V. D. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Capobianco%2C+R">R. Capobianco</a> , et al. (118 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="2203.16785v3-abstract-short" style="display: inline;"> New results for the exclusive and quasi-free cross sections off neutrons bound in deuterium $纬_vn(p) \rightarrow p蟺^{-} (p)$ are presented over a wide final state hadron angle range with a kinematic coverage of the invariant mass ($W$) up to 1.825 GeV and the virtual photon four-momentum transfer squared ($Q^{2}$) from 0.4 to 1.0 GeV$^2$. The exclusive structure functions were extracted and their… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.16785v3-abstract-full').style.display = 'inline'; document.getElementById('2203.16785v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.16785v3-abstract-full" style="display: none;"> New results for the exclusive and quasi-free cross sections off neutrons bound in deuterium $纬_vn(p) \rightarrow p蟺^{-} (p)$ are presented over a wide final state hadron angle range with a kinematic coverage of the invariant mass ($W$) up to 1.825 GeV and the virtual photon four-momentum transfer squared ($Q^{2}$) from 0.4 to 1.0 GeV$^2$. The exclusive structure functions were extracted and their Legendre moments were obtained. Final-state-interaction contributions have been kinematically separated from the extracted quasi-free cross sections off bound neutrons solely based on the analysis of the experimental data. These new results will serve as long-awaited input for phenomenological analyses to extract the $Q^{2}$ evolution of previously unavailable $n \to N^{*}$ electroexcitation amplitudes and to improve state-of-the-art models of neutrino scattering off nuclei by augmenting the already available results from free protons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.16785v3-abstract-full').style.display = 'none'; document.getElementById('2203.16785v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 31 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">The author list has been updated</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.10054">arXiv:1709.10054</a> <span> [<a href="https://arxiv.org/pdf/1709.10054">pdf</a>, <a href="https://arxiv.org/ps/1709.10054">ps</a>, <a href="https://arxiv.org/format/1709.10054">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> </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.2018.06.014">10.1016/j.physletb.2018.06.014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Semi-Inclusive $蟺_0$ target and beam-target asymmetries from 6 GeV electron scattering with CLAS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Jawalkar%2C+S">S. Jawalkar</a>, <a href="/search/nucl-ex?searchtype=author&query=Koirala%2C+S">S. Koirala</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosted%2C+P">P. Bosted</a>, <a href="/search/nucl-ex?searchtype=author&query=Griffioen%2C+K+A">K. A. Griffioen</a>, <a href="/search/nucl-ex?searchtype=author&query=Keith%2C+C">C. Keith</a>, <a href="/search/nucl-ex?searchtype=author&query=Kuhn%2C+S+E">S. E. Kuhn</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+K+P">K. P. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+S">S. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adikaram%2C+D">D. Adikaram</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M+J">M. J. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira%2C+S+A">S. Anefalos Pereira</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+J">J. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Baltzell%2C+N+A">N. A. Baltzell</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Batourine%2C+V">V. Batourine</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A+S">A. S. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Brock%2C+J">J. Brock</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=Bultmann%2C+S">S. Bultmann</a> , et al. (139 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="1709.10054v2-abstract-short" style="display: inline;"> We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. We scattered 6-GeV, longitudinally polarized electrons off longitudinally polarized protons in a cryogenic $^{14}$NH$_3$ target, and extracted double and single target spin asym… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.10054v2-abstract-full').style.display = 'inline'; document.getElementById('1709.10054v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.10054v2-abstract-full" style="display: none;"> We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. We scattered 6-GeV, longitudinally polarized electrons off longitudinally polarized protons in a cryogenic $^{14}$NH$_3$ target, and extracted double and single target spin asymmetries for $ep\rightarrow e^\prime蟺^0X$ in multidimensional bins in four-momentum transfer ($1.0<Q^2<3.2$ GeV$^2$), Bjorken-$x$ ($0.12<x<0.48$), hadron energy fraction ($0.4<z<0.7$), transverse pion momentum ($0<P_T<1.0$ GeV), and azimuthal angle $蠁_h$ between the lepton scattering and hadron production planes. We extracted asymmetries as a function of both $x$ and $P_T$, which provide access to transverse-momentum distributions of longitudinally polarized quarks. The double spin asymmetries depend weakly on $P_T$. The $\sin 2蠁_h$ moments are zero within uncertainties, which is consistent with the expected suppression of the Collins fragmentation function. The observed $\sin蠁_h$ moments suggest that quark gluon correlations are significant at large $x$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.10054v2-abstract-full').style.display = 'none'; document.getElementById('1709.10054v2-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 September, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">18 preprint pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1708.02608">arXiv:1708.02608</a> <span> [<a href="https://arxiv.org/pdf/1708.02608">pdf</a>, <a href="https://arxiv.org/format/1708.02608">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="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.96.065209">10.1103/PhysRevC.96.065209 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the helicity asymmetry $E$ in $蠅\to蟺^+蟺^-蟺^0$ photoproduction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Roy%2C+P">P. Roy</a>, <a href="/search/nucl-ex?searchtype=author&query=Park%2C+S">S. Park</a>, <a href="/search/nucl-ex?searchtype=author&query=Crede%2C+V">V. Crede</a>, <a href="/search/nucl-ex?searchtype=author&query=Anisovich%2C+A+V">A. V. Anisovich</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisenko%2C+I">I. Denisenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Klempt%2C+E">E. Klempt</a>, <a href="/search/nucl-ex?searchtype=author&query=Nikonov%2C+V+A">V. A. Nikonov</a>, <a href="/search/nucl-ex?searchtype=author&query=Sarantsev%2C+A+V">A. V. Sarantsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+K+P">K. P. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+S">S. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M+J">M. J. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira%2C+S+A">S. Anefalos Pereira</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+J">J. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Batourine%2C+V">V. Batourine</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Brock%2C+J">J. Brock</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=Burkert%2C+V+D">V. D. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+F+T">F. T. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Carlin%2C+C">C. Carlin</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="1708.02608v2-abstract-short" style="display: inline;"> The double-polarization observable $E$ was studied for the reaction $纬p\to p蠅$ using the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at the Thomas Jefferson National Accelerator Facility and the longitudinally-polarized frozen-spin target (FROST). The observable was measured from the charged decay mode of the meson, $蠅\to蟺^+蟺^-蟺^0$, using a circularly-polarized tagged-photon beam with ene… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.02608v2-abstract-full').style.display = 'inline'; document.getElementById('1708.02608v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1708.02608v2-abstract-full" style="display: none;"> The double-polarization observable $E$ was studied for the reaction $纬p\to p蠅$ using the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at the Thomas Jefferson National Accelerator Facility and the longitudinally-polarized frozen-spin target (FROST). The observable was measured from the charged decay mode of the meson, $蠅\to蟺^+蟺^-蟺^0$, using a circularly-polarized tagged-photon beam with energies ranging from the $蠅$ threshold at 1.1 to 2.3 GeV. A partial-wave analysis within the Bonn-Gatchina framework found dominant contributions from the $3/2^+$ partial wave near threshold, which is identified with the sub-threshold $N(1720)\,3/2^+$ nucleon resonance. To describe the entire data set, which consisted of $蠅$ differential cross sections and a large variety of polarization observables, further contributions from other nucleon resonances were found to be necessary. With respect to non-resonant mechanisms, $蟺$ exchange in the $t$-channel was found to remain small across the analyzed energy range, while pomeron $t$-channel exchange gradually grew from the reaction threshold to dominate all other contributions above $W \approx 2$ GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.02608v2-abstract-full').style.display = 'none'; document.getElementById('1708.02608v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">12 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-17-2532 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 96, 065209 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.04280">arXiv:1706.04280</a> <span> [<a href="https://arxiv.org/pdf/1706.04280">pdf</a>, <a href="https://arxiv.org/format/1706.04280">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.physletb.2017.08.015">10.1016/j.physletb.2017.08.015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Photon beam asymmetry $危$ in the reaction $\vec纬 p \to p 蠅$ for $E_纬$ = 1.152 to 1.876 GeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=CLAS+Collaboration"> CLAS Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Collins%2C+P">P. Collins</a>, <a href="/search/nucl-ex?searchtype=author&query=Ritchie%2C+B+G">B. G. Ritchie</a>, <a href="/search/nucl-ex?searchtype=author&query=Dugger%2C+M">M. Dugger</a>, <a href="/search/nucl-ex?searchtype=author&query=Klein%2C+F+J">F. J. Klein</a>, <a href="/search/nucl-ex?searchtype=author&query=Anisovich%2C+A+V">A. V. Anisovich</a>, <a href="/search/nucl-ex?searchtype=author&query=Klempt%2C+E">E. Klempt</a>, <a href="/search/nucl-ex?searchtype=author&query=Nikonov%2C+V+A">V. A. Nikonov</a>, <a href="/search/nucl-ex?searchtype=author&query=Sarantsev%2C+A">A. Sarantsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+K+P">K. P. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+S">S. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adikaram%2C+D">D. Adikaram</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira%2C+S+A">S. Anefalos Pereira</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+J">J. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Baltzell%2C+N+A">N. A. Baltzell</a>, <a href="/search/nucl-ex?searchtype=author&query=Bashkanov%2C+M">M. Bashkanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Batourine%2C+V">V. Batourine</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A+S">A. S. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Brooks%2C+W+K">W. K. Brooks</a> , et al. (125 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="1706.04280v1-abstract-short" style="display: inline;"> Photon beam asymmetry $危$ measurements for $蠅$ photoproduction in the reaction $\vec纬 p \to 蠅p$ are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend cov… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.04280v1-abstract-full').style.display = 'inline'; document.getElementById('1706.04280v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.04280v1-abstract-full" style="display: none;"> Photon beam asymmetry $危$ measurements for $蠅$ photoproduction in the reaction $\vec纬 p \to 蠅p$ are reported for photon energies from 1.152 to 1.876 GeV. Data were taken using a linearly-polarized tagged photon beam, a cryogenic hydrogen target, and the CLAS spectrometer in Hall B at Jefferson Lab. The measurements obtained markedly increase the size of the database for this observable, extend coverage to higher energies, and resolve discrepancies in previously published data. Comparisons of these new results with predictions from a chiral-quark-based model and from a dynamical coupled-channels model indicate the importance of interferences between $t$-channel meson exchange and $s$- and $u$-channel contributions, underscoring sensitivity to the nucleon resonances included in those descriptions. Comparisons with the Bonn-Gatchina partial-wave analysis indicate the $危$ data reported here help to fix the magnitudes of the interference terms between the leading amplitudes in that calculation (Pomeron exchange and the resonant portion of the $J^P=3/2^+$ partial wave), as well as the resonant portions of the smaller partial waves with $J^P$= $1/2^-$, $3/2^-$, and $5/2^+$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.04280v1-abstract-full').style.display = 'none'; document.getElementById('1706.04280v1-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 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">10 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.01963">arXiv:1706.01963</a> <span> [<a href="https://arxiv.org/pdf/1706.01963">pdf</a>, <a href="https://arxiv.org/ps/1706.01963">ps</a>, <a href="https://arxiv.org/format/1706.01963">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.96.035204">10.1103/PhysRevC.96.035204 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Differential Cross Section Measurements for $纬n\to蟺^-p$ Above the First Nucleon Resonance Region </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mattione%2C+P+T">P. T. Mattione</a>, <a href="/search/nucl-ex?searchtype=author&query=Carman%2C+D+S">D. S. Carman</a>, <a href="/search/nucl-ex?searchtype=author&query=Strakovsky%2C+I+I">I. I. Strakovsky</a>, <a href="/search/nucl-ex?searchtype=author&query=Workman%2C+R+L">R. L. Workman</a>, <a href="/search/nucl-ex?searchtype=author&query=Kudryavtsev%2C+A+E">A. E. Kudryavtsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Svarc%2C+A">A. Svarc</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarasov%2C+V+E">V. E. Tarasov</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+K+P">K. P. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+S">S. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adikaram%2C+D">D. Adikaram</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira%2C+S+A">S. Anefalos Pereira</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+J">J. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Baltzell%2C+N+A">N. A. Baltzell</a>, <a href="/search/nucl-ex?searchtype=author&query=Bashkanov%2C+M">M. Bashkanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Batourine%2C+V">V. Batourine</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A+S">A. S. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkert%2C+V+D">V. D. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+T">T. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Celentano%2C+A">A. Celentano</a>, <a href="/search/nucl-ex?searchtype=author&query=Charles%2C+G">G. Charles</a> , et al. (123 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="1706.01963v3-abstract-short" style="display: inline;"> The quasi-free $纬d\to蟺^{-}p(p)$ differential cross section has been measured with CLAS at photon beam energies $E_纬$ from 0.445 GeV to 2.510 GeV (corresponding to $W$ from 1.311 GeV to 2.366 GeV) for pion center-of-mass angles $\cos胃_蟺^{c.m.}$ from -0.72 to 0.92. A correction for final state interactions has been applied to this data to extract the $纬n\to蟺^-p$ differential cross sections. These cr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.01963v3-abstract-full').style.display = 'inline'; document.getElementById('1706.01963v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.01963v3-abstract-full" style="display: none;"> The quasi-free $纬d\to蟺^{-}p(p)$ differential cross section has been measured with CLAS at photon beam energies $E_纬$ from 0.445 GeV to 2.510 GeV (corresponding to $W$ from 1.311 GeV to 2.366 GeV) for pion center-of-mass angles $\cos胃_蟺^{c.m.}$ from -0.72 to 0.92. A correction for final state interactions has been applied to this data to extract the $纬n\to蟺^-p$ differential cross sections. These cross sections are quoted in 8428 $(E_纬,\cos胃_蟺^{c.m.})$ bins, a factor of nearly three increase in the world statistics for this channel in this kinematic range. These new data help to constrain coupled-channel analysis fits used to disentangle the spectrum of $N^*$ resonances and extract their properties. Selected photon decay amplitudes $N^* \to 纬n$ at the resonance poles are determined for the first time and are reported here. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.01963v3-abstract-full').style.display = 'none'; document.getElementById('1706.01963v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-PHY-17-2478 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 96, 035204 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1611.04987">arXiv:1611.04987</a> <span> [<a href="https://arxiv.org/pdf/1611.04987">pdf</a>, <a href="https://arxiv.org/ps/1611.04987">ps</a>, <a href="https://arxiv.org/format/1611.04987">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.95.035207">10.1103/PhysRevC.95.035207 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Target and beam-target spin asymmetries in exclusive pion electroproduction for $Q^2>1$ GeV$^2$. II. $e p \rightarrow e 蟺^0 p$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bosted%2C+P+E">P. E. Bosted</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+A">A. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=Adhikari%2C+K+P">K. P. Adhikari</a>, <a href="/search/nucl-ex?searchtype=author&query=Adikaram%2C+D">D. Adikaram</a>, <a href="/search/nucl-ex?searchtype=author&query=Akbar%2C+Z">Z. Akbar</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaryan%2C+M+J">M. J. Amaryan</a>, <a href="/search/nucl-ex?searchtype=author&query=Pereira%2C+S+A">S. Anefalos Pereira</a>, <a href="/search/nucl-ex?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/nucl-ex?searchtype=author&query=Badui%2C+R+A">R. A. Badui</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+J">J. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Balossino%2C+I">I. Balossino</a>, <a href="/search/nucl-ex?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedlinskiy%2C+I">I. Bedlinskiy</a>, <a href="/search/nucl-ex?searchtype=author&query=Biselli%2C+A+S">A. S. Biselli</a>, <a href="/search/nucl-ex?searchtype=author&query=Boiarinov%2C+S">S. Boiarinov</a>, <a href="/search/nucl-ex?searchtype=author&query=Briscoe%2C+W+J">W. J. Briscoe</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=B%C3%BCltmann%2C+S">S. B眉ltmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Burkert%2C+V+D">V. D. Burkert</a>, <a href="/search/nucl-ex?searchtype=author&query=Cao%2C+T">T. Cao</a>, <a href="/search/nucl-ex?searchtype=author&query=Carman%2C+D+S">D. S. Carman</a>, <a href="/search/nucl-ex?searchtype=author&query=Celentano%2C+A">A. Celentano</a>, <a href="/search/nucl-ex?searchtype=author&query=Chandavar%2C+S">S. Chandavar</a>, <a href="/search/nucl-ex?searchtype=author&query=Charles%2C+G">G. Charles</a>, <a href="/search/nucl-ex?searchtype=author&query=Chetry%2C+T">T. Chetry</a> , et al. (131 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="1611.04987v1-abstract-short" style="display: inline;"> Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive $蟺^0$ electroproduction reaction $纬^* p \to p 蟺^0$, expanding an analysis of the $纬^* p \to n 蟺^+$ reaction from the same experiment. The results were obtained from scattering of 6 GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectro… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.04987v1-abstract-full').style.display = 'inline'; document.getElementById('1611.04987v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1611.04987v1-abstract-full" style="display: none;"> Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive $蟺^0$ electroproduction reaction $纬^* p \to p 蟺^0$, expanding an analysis of the $纬^* p \to n 蟺^+$ reaction from the same experiment. The results were obtained from scattering of 6 GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Lab. The kinematic range covered is $1.1<W<3$ GeV and $1<Q^2<6$ GeV$^2$. Results were obtained for about 5700 bins in $W$, $Q^2$, \cthcm, and $蠁^*$. The beam-target asymmetries were found to generally be greater than zero, with relatively modest \phicmsp dependence. The target asymmetries exhibit very strong \phicmsp dependence, with a change in sign occurring between results at low $W$ and high $W$, in contrast to $蟺^+$ electroproduction. Reasonable agreement is found with phenomenological fits to previous data for $W<1.6$ GeV, but significant differences are seen at higher $W$. When combined with cross section measurements, as well as $蟺^+$ observables, the present results will provide powerful constraints on nucleon resonance amplitudes at moderate and large values of $Q^2$, for resonances with masses as high as 2.4 GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1611.04987v1-abstract-full').style.display = 'none'; document.getElementById('1611.04987v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 November, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 12 figures, submitted to Phys. Rev. C</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 95, 035207 (2017) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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