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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/2410.19016">arXiv:2410.19016</a> <span> [<a href="https://arxiv.org/pdf/2410.19016">pdf</a>, <a href="https://arxiv.org/format/2410.19016">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"> Neutrinoless Double Beta Decay Sensitivity of the XLZD Rare Event Observatory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=XLZD+Collaboration"> XLZD Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/nucl-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/nucl-ex?searchtype=author&query=Adrover%2C+M">M. Adrover</a>, <a href="/search/nucl-ex?searchtype=author&query=Maouloud%2C+S+A">S. Ahmed Maouloud</a>, <a href="/search/nucl-ex?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/nucl-ex?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/nucl-ex?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/nucl-ex?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaral%2C+D+W+P">D. W. P. Amaral</a>, <a href="/search/nucl-ex?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/nucl-ex?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelino%2C+E">E. Angelino</a>, <a href="/search/nucl-ex?searchtype=author&query=Antunovic%2C+B">B. Antunovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/nucl-ex?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a>, <a href="/search/nucl-ex?searchtype=author&query=Armstrong%2C+J+E">J. E. Armstrong</a>, <a href="/search/nucl-ex?searchtype=author&query=Arthurs%2C+M">M. Arthurs</a>, <a href="/search/nucl-ex?searchtype=author&query=Babicz%2C+M">M. Babicz</a>, <a href="/search/nucl-ex?searchtype=author&query=Bajpai%2C+D">D. Bajpai</a>, <a href="/search/nucl-ex?searchtype=author&query=Baker%2C+A">A. Baker</a>, <a href="/search/nucl-ex?searchtype=author&query=Balzer%2C+M">M. Balzer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bang%2C+J">J. Bang</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="2410.19016v1-abstract-short" style="display: inline;"> The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60 to 80 t capable of probing the remaining WIMP-nucleon interaction parameter space down to the so-called neutrino fog. In this work we show that, based on the performance of currently operating detectors using the same technology and a realistic reduction of radioactivity in detector materials,… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.19016v1-abstract-full').style.display = 'inline'; document.getElementById('2410.19016v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.19016v1-abstract-full" style="display: none;"> The XLZD collaboration is developing a two-phase xenon time projection chamber with an active mass of 60 to 80 t capable of probing the remaining WIMP-nucleon interaction parameter space down to the so-called neutrino fog. In this work we show that, based on the performance of currently operating detectors using the same technology and a realistic reduction of radioactivity in detector materials, such an experiment will also be able to competitively search for neutrinoless double beta decay in $^{136}$Xe using a natural-abundance xenon target. XLZD can reach a 3$蟽$ discovery potential half-life of 5.7$\times$10$^{27}$ yr (and a 90% CL exclusion of 1.3$\times$10$^{28}$ yr) with 10 years of data taking, corresponding to a Majorana mass range of 7.3-31.3 meV (4.8-20.5 meV). XLZD will thus exclude the inverted neutrino mass ordering parameter space and will start to probe the normal ordering region for most of the nuclear matrix elements commonly considered by the community. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.19016v1-abstract-full').style.display = 'none'; document.getElementById('2410.19016v1-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 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">29 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.02877">arXiv:2408.02877</a> <span> [<a href="https://arxiv.org/pdf/2408.02877">pdf</a>, <a href="https://arxiv.org/format/2408.02877">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="Solar and Stellar Astrophysics">astro-ph.SR</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> First Measurement of Solar $^8$B Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/nucl-ex?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/nucl-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/nucl-ex?searchtype=author&query=Maouloud%2C+S+A">S. Ahmed Maouloud</a>, <a href="/search/nucl-ex?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelino%2C+E">E. Angelino</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+D+A">D. Ant贸n Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arneodo%2C+F">F. Arneodo</a>, <a href="/search/nucl-ex?searchtype=author&query=Baudis%2C+L">L. Baudis</a>, <a href="/search/nucl-ex?searchtype=author&query=Bazyk%2C+M">M. Bazyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellagamba%2C+L">L. Bellagamba</a>, <a href="/search/nucl-ex?searchtype=author&query=Biondi%2C+R">R. Biondi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bismark%2C+A">A. Bismark</a>, <a href="/search/nucl-ex?searchtype=author&query=Boese%2C+K">K. Boese</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+A">A. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruno%2C+G">G. Bruno</a>, <a href="/search/nucl-ex?searchtype=author&query=Budnik%2C+R">R. Budnik</a>, <a href="/search/nucl-ex?searchtype=author&query=Cai%2C+C">C. Cai</a>, <a href="/search/nucl-ex?searchtype=author&query=Capelli%2C+C">C. Capelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardoso%2C+J+M+R">J. M. R. Cardoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Ch%C3%A1vez%2C+A+P+C">A. P. Cimental Ch谩vez</a>, <a href="/search/nucl-ex?searchtype=author&query=Colijn%2C+A+P">A. P. Colijn</a>, <a href="/search/nucl-ex?searchtype=author&query=Conrad%2C+J">J. Conrad</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuenca-Garc%C3%ADa%2C+J+J">J. J. Cuenca-Garc铆a</a> , et al. (142 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.02877v1-abstract-short" style="display: inline;"> We present the first measurement of nuclear recoils from solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering with the XENONnT dark matter experiment. The central detector of XENONnT is a low-background, two-phase time projection chamber with a 5.9\,t sensitive liquid xenon target. A blind analysis with an exposure of 3.51\,t$\times$y resulted in 37 observed events above 0.5\,keV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.02877v1-abstract-full').style.display = 'inline'; document.getElementById('2408.02877v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.02877v1-abstract-full" style="display: none;"> We present the first measurement of nuclear recoils from solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering with the XENONnT dark matter experiment. The central detector of XENONnT is a low-background, two-phase time projection chamber with a 5.9\,t sensitive liquid xenon target. A blind analysis with an exposure of 3.51\,t$\times$y resulted in 37 observed events above 0.5\,keV, with ($26.4^{+1.4}_{-1.3}$) events expected from backgrounds. The background-only hypothesis is rejected with a statistical significance of 2.73\,$蟽$. The measured $^8$B solar neutrino flux of $(4.7_{-2.3}^{+3.6})\times 10^6\,\mathrm{cm}^{-2}\mathrm{s}^{-1}$ is consistent with results from dedicated solar neutrino experiments. The measured neutrino flux-weighted CE$谓$NS cross-section on Xe of $(1.1^{+0.8}_{-0.5})\times10^{-39}\,\mathrm{cm}^2$ is consistent with the Standard Model prediction. This is the first direct measurement of nuclear recoils from solar neutrinos with a dark matter detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.02877v1-abstract-full').style.display = 'none'; document.getElementById('2408.02877v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.18109">arXiv:2310.18109</a> <span> [<a href="https://arxiv.org/pdf/2310.18109">pdf</a>, <a href="https://arxiv.org/format/2310.18109">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="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</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="Quantum Physics">quant-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/10.1093/ptep/ptae014">10.1093/ptep/ptae014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for dark energy with neutron interferometry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">Hauke Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=K%C3%A4ding%2C+C">Christian K盲ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Lemmel%2C+H">Hartmut Lemmel</a>, <a href="/search/nucl-ex?searchtype=author&query=Sponar%2C+S">Stephan Sponar</a>, <a href="/search/nucl-ex?searchtype=author&query=Pitschmann%2C+M">Mario Pitschmann</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="2310.18109v1-abstract-short" style="display: inline;"> We use previously obtained experimental results by neutron interferometry to effectively constrain the parameter space of several prominent dark energy models. This investigation encompasses the environment-dependent dilaton field, a compelling contender for dark energy that emerges naturally within the strong coupling limit of string theory, alongside symmetron and chameleon fields. Our study pre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.18109v1-abstract-full').style.display = 'inline'; document.getElementById('2310.18109v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.18109v1-abstract-full" style="display: none;"> We use previously obtained experimental results by neutron interferometry to effectively constrain the parameter space of several prominent dark energy models. This investigation encompasses the environment-dependent dilaton field, a compelling contender for dark energy that emerges naturally within the strong coupling limit of string theory, alongside symmetron and chameleon fields. Our study presents substantial improvements over previous constraints of the dilaton and symmetron fields, improving parameter constraints by several orders of magnitude. However, the analysis does not yield any new constraints on the chameleon field. Furthermore, we establish constraints for the projected neutron split interferometer, which has recently concluded a decisive proof-of-principle demonstration. Our symmetron simulations reveal that depending on the parameter values there are multiple static solutions with increasing number of nodes and increasing energy inside a cylindrical vacuum chamber. This agrees with results obtained earlier in the literature for infinitely parallel plates. Interestingly, while these multiple solutions can correspond to domain walls forming inside the vacuum chamber, we also find solutions that do not reach their vacuum expectation value inside the vacuum chamber, but display multiple nodes nonetheless. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.18109v1-abstract-full').style.display = 'none'; document.getElementById('2310.18109v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2307.00243">arXiv:2307.00243</a> <span> [<a href="https://arxiv.org/pdf/2307.00243">pdf</a>, <a href="https://arxiv.org/format/2307.00243">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="General Relativity and Quantum Cosmology">gr-qc</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.dark.2024.101419">10.1016/j.dark.2024.101419 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for environment-dependent dilatons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">Hauke Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=K%C3%A4ding%2C+C">Christian K盲ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Sedmik%2C+R+I+P">Ren茅 I. P. Sedmik</a>, <a href="/search/nucl-ex?searchtype=author&query=Abele%2C+H">Hartmut Abele</a>, <a href="/search/nucl-ex?searchtype=author&query=Brax%2C+P">Philippe Brax</a>, <a href="/search/nucl-ex?searchtype=author&query=Pitschmann%2C+M">Mario Pitschmann</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="2307.00243v1-abstract-short" style="display: inline;"> The environment-dependent dilaton field is a well-motivated candidate for dark energy and naturally arises in the strong coupling limit of string theory. In this article, we present the very first experimental constraints on the parameters of this model. For this, we employ data obtained from the qBounce collaboration and the Lunar Laser Ranging (LLR) experiment. Furthermore, we forecast expected… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.00243v1-abstract-full').style.display = 'inline'; document.getElementById('2307.00243v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.00243v1-abstract-full" style="display: none;"> The environment-dependent dilaton field is a well-motivated candidate for dark energy and naturally arises in the strong coupling limit of string theory. In this article, we present the very first experimental constraints on the parameters of this model. For this, we employ data obtained from the qBounce collaboration and the Lunar Laser Ranging (LLR) experiment. Furthermore, we forecast expected exclusion plots for the Casimir And Non Newtonian force EXperiment (Cannex) soon to be realised in an improved setup. Finally, we provide a detailed analysis of the screening mechanism and additional symmetries of the dilaton field theory. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.00243v1-abstract-full').style.display = 'none'; document.getElementById('2307.00243v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.04158">arXiv:2205.04158</a> <span> [<a href="https://arxiv.org/pdf/2205.04158">pdf</a>, <a href="https://arxiv.org/format/2205.04158">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.106.024328">10.1103/PhysRevC.106.024328 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Double-Weak Decays of $^{124}$Xe and $^{136}$Xe in the XENON1T and XENONnT Experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/nucl-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/nucl-ex?searchtype=author&query=Agostini%2C+F">F. Agostini</a>, <a href="/search/nucl-ex?searchtype=author&query=Maouloud%2C+S+A">S. Ahmed Maouloud</a>, <a href="/search/nucl-ex?searchtype=author&query=Alfonsi%2C+M">M. Alfonsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelino%2C+E">E. Angelino</a>, <a href="/search/nucl-ex?searchtype=author&query=Angevaare%2C+J+R">J. R. Angevaare</a>, <a href="/search/nucl-ex?searchtype=author&query=Antochi%2C+V+C">V. C. Antochi</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+D+A">D. Ant贸n Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Arneodo%2C+F">F. Arneodo</a>, <a href="/search/nucl-ex?searchtype=author&query=Baudis%2C+L">L. Baudis</a>, <a href="/search/nucl-ex?searchtype=author&query=Baxter%2C+A+L">A. L. Baxter</a>, <a href="/search/nucl-ex?searchtype=author&query=Bellagamba%2C+L">L. Bellagamba</a>, <a href="/search/nucl-ex?searchtype=author&query=Biondi%2C+R">R. Biondi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bismark%2C+A">A. Bismark</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+A">A. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruenner%2C+S">S. Bruenner</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruno%2C+G">G. Bruno</a>, <a href="/search/nucl-ex?searchtype=author&query=Budnik%2C+R">R. Budnik</a>, <a href="/search/nucl-ex?searchtype=author&query=Cai%2C+C">C. Cai</a>, <a href="/search/nucl-ex?searchtype=author&query=Capelli%2C+C">C. Capelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardoso%2C+J+M+R">J. M. R. Cardoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Cichon%2C+D">D. Cichon</a> , et al. (135 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.04158v3-abstract-short" style="display: inline;"> We present results on the search for double-electron capture ($2谓\text{ECEC}$) of $^{124}$Xe and neutrinoless double-$尾$ decay ($0谓尾尾$) of $^{136}$Xe in XENON1T. We consider captures from the K- up to the N-shell in the $2谓\text{ECEC}$ signal model and measure a total half-life of $T_{1/2}^{2谓\text{ECEC}}=(1.1\pm0.2_\text{stat}\pm0.1_\text{sys})\times 10^{22}\;\text{yr}$ with a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.04158v3-abstract-full').style.display = 'inline'; document.getElementById('2205.04158v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.04158v3-abstract-full" style="display: none;"> We present results on the search for double-electron capture ($2谓\text{ECEC}$) of $^{124}$Xe and neutrinoless double-$尾$ decay ($0谓尾尾$) of $^{136}$Xe in XENON1T. We consider captures from the K- up to the N-shell in the $2谓\text{ECEC}$ signal model and measure a total half-life of $T_{1/2}^{2谓\text{ECEC}}=(1.1\pm0.2_\text{stat}\pm0.1_\text{sys})\times 10^{22}\;\text{yr}$ with a $0.87\;\text{kg}\times\text{yr}$ isotope exposure. The statistical significance of the signal is $7.0\,蟽$. We use XENON1T data with $36.16\;\text{kg}\times\text{yr}$ of $^{136}$Xe exposure to search for $0谓尾尾$. We find no evidence of a signal and set a lower limit on the half-life of $T_{1/2}^{0谓尾尾} > 1.2 \times 10^{24}\;\text{yr}\; \text{at}\; 90\,\%\;\text{CL}$. This is the best result from a dark matter detector without an enriched target to date. We also report projections on the sensitivity of XENONnT to $0谓尾尾$. Assuming a $275\;\text{kg}\times\text{yr}$ $^{136}$Xe exposure, the expected sensitivity is $T_{1/2}^{0谓尾尾} > 2.1 \times 10^{25}\;\text{yr}\; \text{at}\; 90\,\%\;\text{CL}$, corresponding to an effective Majorana mass range of $\langle m_{尾尾} \rangle < (0.19 - 0.59)\;\text{eV/c}^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.04158v3-abstract-full').style.display = 'none'; document.getElementById('2205.04158v3-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 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 14 figures, 9 tables, version accepted for publication in 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 106, 024328 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2203.02309">arXiv:2203.02309</a> <span> [<a href="https://arxiv.org/pdf/2203.02309">pdf</a>, <a href="https://arxiv.org/format/2203.02309">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="Cosmology and Nongalactic Astrophysics">astro-ph.CO</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/ac841a">10.1088/1361-6471/ac841a <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aalbers%2C+J">J. Aalbers</a>, <a href="/search/nucl-ex?searchtype=author&query=Abe%2C+K">K. Abe</a>, <a href="/search/nucl-ex?searchtype=author&query=Aerne%2C+V">V. Aerne</a>, <a href="/search/nucl-ex?searchtype=author&query=Agostini%2C+F">F. Agostini</a>, <a href="/search/nucl-ex?searchtype=author&query=Maouloud%2C+S+A">S. Ahmed Maouloud</a>, <a href="/search/nucl-ex?searchtype=author&query=Akerib%2C+D+S">D. S. Akerib</a>, <a href="/search/nucl-ex?searchtype=author&query=Akimov%2C+D+Y">D. Yu. Akimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Akshat%2C+J">J. Akshat</a>, <a href="/search/nucl-ex?searchtype=author&query=Musalhi%2C+A+K+A">A. K. Al Musalhi</a>, <a href="/search/nucl-ex?searchtype=author&query=Alder%2C+F">F. Alder</a>, <a href="/search/nucl-ex?searchtype=author&query=Alsum%2C+S+K">S. K. Alsum</a>, <a href="/search/nucl-ex?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/nucl-ex?searchtype=author&query=Amarasinghe%2C+C+S">C. S. Amarasinghe</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/nucl-ex?searchtype=author&query=Ames%2C+A">A. Ames</a>, <a href="/search/nucl-ex?searchtype=author&query=Anderson%2C+T+J">T. J. Anderson</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieu%2C+B">B. Andrieu</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelides%2C+N">N. Angelides</a>, <a href="/search/nucl-ex?searchtype=author&query=Angelino%2C+E">E. Angelino</a>, <a href="/search/nucl-ex?searchtype=author&query=Angevaare%2C+J">J. Angevaare</a>, <a href="/search/nucl-ex?searchtype=author&query=Antochi%2C+V+C">V. C. Antochi</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+D+A">D. Ant贸n Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Antunovic%2C+B">B. Antunovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/nucl-ex?searchtype=author&query=Ara%C3%BAjo%2C+H+M">H. M. Ara煤jo</a> , et al. (572 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2203.02309v1-abstract-short" style="display: inline;"> The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neut… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02309v1-abstract-full').style.display = 'inline'; document.getElementById('2203.02309v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.02309v1-abstract-full" style="display: none;"> The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neutrinos through neutrinoless double-beta decay and through a variety of astrophysical sources. A next-generation xenon-based detector will therefore be a true multi-purpose observatory to significantly advance particle physics, nuclear physics, astrophysics, solar physics, and cosmology. This review article presents the science cases for such a detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.02309v1-abstract-full').style.display = 'none'; document.getElementById('2203.02309v1-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">77 pages, 40 figures, 1262 references</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INT-PUB-22-003 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Phys. G: Nucl. Part. Phys. 50 (2023) 013001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.13407">arXiv:2003.13407</a> <span> [<a href="https://arxiv.org/pdf/2003.13407">pdf</a>, <a href="https://arxiv.org/format/2003.13407">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"> Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of $^{136}$Xe </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agostini%2C+F">F. Agostini</a>, <a href="/search/nucl-ex?searchtype=author&query=Maouloud%2C+S+E+M+A">S. E. M. Ahmed Maouloud</a>, <a href="/search/nucl-ex?searchtype=author&query=Althueser%2C+L">L. Althueser</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaro%2C+F">F. Amaro</a>, <a href="/search/nucl-ex?searchtype=author&query=Antunovic%2C+B">B. Antunovic</a>, <a href="/search/nucl-ex?searchtype=author&query=Aprile%2C+E">E. Aprile</a>, <a href="/search/nucl-ex?searchtype=author&query=Baudis%2C+L">L. Baudis</a>, <a href="/search/nucl-ex?searchtype=author&query=Baur%2C+D">D. Baur</a>, <a href="/search/nucl-ex?searchtype=author&query=Biondi%2C+Y">Y. Biondi</a>, <a href="/search/nucl-ex?searchtype=author&query=Bismark%2C+A">A. Bismark</a>, <a href="/search/nucl-ex?searchtype=author&query=Breur%2C+P+A">P. A. Breur</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+A">A. Brown</a>, <a href="/search/nucl-ex?searchtype=author&query=Bruno%2C+G">G. Bruno</a>, <a href="/search/nucl-ex?searchtype=author&query=Budnik%2C+R">R. Budnik</a>, <a href="/search/nucl-ex?searchtype=author&query=Capelli%2C+C">C. Capelli</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardoso%2C+J">J. Cardoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Cichon%2C+D">D. Cichon</a>, <a href="/search/nucl-ex?searchtype=author&query=Clark%2C+M">M. Clark</a>, <a href="/search/nucl-ex?searchtype=author&query=Colijn%2C+A+P">A. P. Colijn</a>, <a href="/search/nucl-ex?searchtype=author&query=Cuenca-Garc%C3%ADa%2C+J+J">J. J. Cuenca-Garc铆a</a>, <a href="/search/nucl-ex?searchtype=author&query=Cussonneau%2C+J+P">J. P. Cussonneau</a>, <a href="/search/nucl-ex?searchtype=author&query=Decowski%2C+M+P">M. P. Decowski</a>, <a href="/search/nucl-ex?searchtype=author&query=Depoian%2C+A">A. Depoian</a>, <a href="/search/nucl-ex?searchtype=author&query=Dierle%2C+J">J. Dierle</a>, <a href="/search/nucl-ex?searchtype=author&query=Di+Gangi%2C+P">P. Di Gangi</a> , et al. (70 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2003.13407v2-abstract-short" style="display: inline;"> The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of $^{136}$Xe. Out of its 50$\,$t total natural xenon inventory, 40$\,$t will be the active target of a time projection chamber which thus contains about 3.6 t of $^{136}$Xe. Here, we show that its projected half-life sensitivity is $2.4\times10^{27}\,$yr, u… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.13407v2-abstract-full').style.display = 'inline'; document.getElementById('2003.13407v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.13407v2-abstract-full" style="display: none;"> The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of $^{136}$Xe. Out of its 50$\,$t total natural xenon inventory, 40$\,$t will be the active target of a time projection chamber which thus contains about 3.6 t of $^{136}$Xe. Here, we show that its projected half-life sensitivity is $2.4\times10^{27}\,$yr, using a fiducial volume of 5t of natural xenon and 10$\,$yr of operation with a background rate of less than 0.2$~$events/(t$\cdot$yr) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in $^{136}$Xe. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.13407v2-abstract-full').style.display = 'none'; document.getElementById('2003.13407v2-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, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">12 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 80, 808 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2003.11791">arXiv:2003.11791</a> <span> [<a href="https://arxiv.org/pdf/2003.11791">pdf</a>, <a href="https://arxiv.org/format/2003.11791">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.2020.135600">10.1016/j.physletb.2020.135600 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Antiproton over proton and K$^-$ over K$^+$ multiplicity ratios at high $z$ in DIS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Antoshkin%2C+A">A. Antoshkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Antequera%2C+J+B">J. Berenguer Antequera</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buechele%2C+M">M. Buechele</a>, <a href="/search/nucl-ex?searchtype=author&query=Burtsev%2C+V+E">V. E. Burtsev</a>, <a href="/search/nucl-ex?searchtype=author&query=Chang%2C+W+-">W. -C. Chang</a>, <a href="/search/nucl-ex?searchtype=author&query=Chatterjee%2C+C">C. Chatterjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiosso%2C+M">M. Chiosso</a> , et al. (174 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="2003.11791v1-abstract-short" style="display: inline;"> The $\bar{\rm p} $ over p multiplicity ratio is measured in deep-inelastic scattering for the first time using (anti-) protons carrying a large fraction of the virtual-photon energy, $z>0.5$. The data were obtained by the COMPASS Collaboration using a 160 GeV muon beam impinging on an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2$ > 1 (GeV/$c$)$^2$… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.11791v1-abstract-full').style.display = 'inline'; document.getElementById('2003.11791v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2003.11791v1-abstract-full" style="display: none;"> The $\bar{\rm p} $ over p multiplicity ratio is measured in deep-inelastic scattering for the first time using (anti-) protons carrying a large fraction of the virtual-photon energy, $z>0.5$. The data were obtained by the COMPASS Collaboration using a 160 GeV muon beam impinging on an isoscalar $^6$LiD target. The regime of deep-inelastic scattering is ensured by requiring $Q^2$ > 1 (GeV/$c$)$^2$ for the photon virtuality and $W > 5$ GeV/$c^2$ for the invariant mass of the produced hadronic system. The range in Bjorken-$x$ is restricted to $0.01 < x < 0.40$. Protons and antiprotons are identified in the momentum range $20 梅60$ GeV/$c$. In the whole studied $z$-region, the $\bar{\rm p}$ over p multiplicity ratio is found to be below the lower limit expected from calculations based on leading-order perturbative Quantum Chromodynamics (pQCD). Extending our earlier analysis of the K$^-$ over K$^+$ multiplicity ratio by including now events with larger virtual-photon energies, this ratio becomes closer to the expectation of next-to-leading order pQCD. The results of both analyses strengthen our earlier conclusion that the phase space available for hadronisation should be taken into account in the pQCD formalism. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2003.11791v1-abstract-full').style.display = 'none'; document.getElementById('2003.11791v1-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 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">19 pages, 7 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2020-041 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1907.10482">arXiv:1907.10482</a> <span> [<a href="https://arxiv.org/pdf/1907.10482">pdf</a>, <a href="https://arxiv.org/format/1907.10482">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1742-6596/1498/1/012006">10.1088/1742-6596/1498/1/012006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The MPGD-Based Photon Detectors for the upgrade of COMPASS RICH-1 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M">M. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buchele%2C+M">M. Buchele</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiosso%2C+M">M. Chiosso</a>, <a href="/search/nucl-ex?searchtype=author&query=Chatterjee%2C+C">C. Chatterjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciliberti%2C+P">P. Ciliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Torre%2C+S+D">S. Dalla Torre</a>, <a href="/search/nucl-ex?searchtype=author&query=Dasgupta%2C+S">S. Dasgupta</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisov%2C+O">O. Denisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger Jr</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Gregori%2C+M">M. Gregori</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamar%2C+G">G. Hamar</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+F">F. Herrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Levorato%2C+S">S. Levorato</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+A">A. Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Menon%2C+G">G. Menon</a>, <a href="/search/nucl-ex?searchtype=author&query=Panzieri%2C+D">D. Panzieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Sbrizzai%2C+G">G. Sbrizzai</a>, <a href="/search/nucl-ex?searchtype=author&query=Schopferer%2C+S">S. Schopferer</a>, <a href="/search/nucl-ex?searchtype=author&query=Slunecka%2C+M">M. Slunecka</a> , et al. (4 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="1907.10482v1-abstract-short" style="display: inline;"> After pioneering gaseous detectors of single photon for RICH applications using CsI solid state photocathodes in MWPCs within the RD26 collaboration and by the constructions for the RICH detector of the COMPASS experiment at CERN SPS, in 2016 we have upgraded COMPASS RICH by novel gaseous photon detectors based on MPGD technology. Four novel photon detectors, covering a total active area of 1.5~m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.10482v1-abstract-full').style.display = 'inline'; document.getElementById('1907.10482v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.10482v1-abstract-full" style="display: none;"> After pioneering gaseous detectors of single photon for RICH applications using CsI solid state photocathodes in MWPCs within the RD26 collaboration and by the constructions for the RICH detector of the COMPASS experiment at CERN SPS, in 2016 we have upgraded COMPASS RICH by novel gaseous photon detectors based on MPGD technology. Four novel photon detectors, covering a total active area of 1.5~m$^2$, have been installed in order to cope with the challenging efficiency and stability requirements of the COMPASS physics programme. They are the first application in an experiment of MPGD-based single photon detectors. All aspects of the upgrade are presented, including engineering, mass production, quality assessment and performance. Perspectives for further developments in the field of gaseous single photon detectors are also indicated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.10482v1-abstract-full').style.display = 'none'; document.getElementById('1907.10482v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 July, 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">MPGD2019 proceedings, presented by Silvia Dalla Torre. arXiv admin note: substantial text overlap with arXiv:1807.00816</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1812.06971">arXiv:1812.06971</a> <span> [<a href="https://arxiv.org/pdf/1812.06971">pdf</a>, <a href="https://arxiv.org/format/1812.06971">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"> The Hybrid MPGD-based photon detectors of COMPASS RICH-1 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M">M. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buechele%2C+M">M. Buechele</a>, <a href="/search/nucl-ex?searchtype=author&query=Chatterjee%2C+C">C. Chatterjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiosso%2C+M">M. Chiosso</a>, <a href="/search/nucl-ex?searchtype=author&query=Cicuttin%2C+A">A. Cicuttin</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciliberti%2C+P">P. Ciliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Crespo%2C+M+L">M. L. Crespo</a>, <a href="/search/nucl-ex?searchtype=author&query=Torre%2C+S+D">S. Dalla Torre</a>, <a href="/search/nucl-ex?searchtype=author&query=Dasgupta%2C+S">S. Dasgupta</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisov%2C+O">O. Denisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger Jr.</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Gregori%2C+M">M. Gregori</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamar%2C+G">G. Hamar</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+F">F. Herrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Levorato%2C+S">S. Levorato</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+A">A. Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Menon%2C+G">G. Menon</a>, <a href="/search/nucl-ex?searchtype=author&query=Panzieri%2C+D">D. Panzieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Sbrizzai%2C+G">G. Sbrizzai</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="1812.06971v1-abstract-short" style="display: inline;"> Novel gaseous detectors of single photons for RICH applications have been developed and installed on COMPASS RICH-1 in 2016. They have a hybrid architecture consisting of two staggered THGEM layers (one equipped with a CsI photoconverting layer) and a bulk Micromegas; they cover a total area of 1.4 squared meters and operate stably and efficiently. They provide a single photon angular resolution o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.06971v1-abstract-full').style.display = 'inline'; document.getElementById('1812.06971v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1812.06971v1-abstract-full" style="display: none;"> Novel gaseous detectors of single photons for RICH applications have been developed and installed on COMPASS RICH-1 in 2016. They have a hybrid architecture consisting of two staggered THGEM layers (one equipped with a CsI photoconverting layer) and a bulk Micromegas; they cover a total area of 1.4 squared meters and operate stably and efficiently. They provide a single photon angular resolution of ~ 1.8 mrad and about 10 detected photons per ring at saturation. The main aspects of their construction and commissioning, their characterization and performance figures are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.06971v1-abstract-full').style.display = 'none'; document.getElementById('1812.06971v1-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">Proceedings of RICH 2018 Workshop</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instr. Methods A 2018 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.00816">arXiv:1807.00816</a> <span> [<a href="https://arxiv.org/pdf/1807.00816">pdf</a>, <a href="https://arxiv.org/format/1807.00816">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2018.10.092">10.1016/j.nima.2018.10.092 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The MPGD-Based Photon Detectors for the upgrade of COMPASS RICH-1 and beyond </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M">M. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buchele%2C+M">M. Buchele</a>, <a href="/search/nucl-ex?searchtype=author&query=Chiosso%2C+M">M. Chiosso</a>, <a href="/search/nucl-ex?searchtype=author&query=Chatterjee%2C+C">C. Chatterjee</a>, <a href="/search/nucl-ex?searchtype=author&query=Ciliberti%2C+P">P. Ciliberti</a>, <a href="/search/nucl-ex?searchtype=author&query=Torre%2C+S+D">S. Dalla Torre</a>, <a href="/search/nucl-ex?searchtype=author&query=Dasgupta%2C+S">S. Dasgupta</a>, <a href="/search/nucl-ex?searchtype=author&query=Denisov%2C+O">O. Denisov</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger</a>, <a href="/search/nucl-ex?searchtype=author&query=Finger%2C+M">M. Finger Jr</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Gregori%2C+M">M. Gregori</a>, <a href="/search/nucl-ex?searchtype=author&query=Hamar%2C+G">G. Hamar</a>, <a href="/search/nucl-ex?searchtype=author&query=Herrmann%2C+F">F. Herrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Levorato%2C+S">S. Levorato</a>, <a href="/search/nucl-ex?searchtype=author&query=Martin%2C+A">A. Martin</a>, <a href="/search/nucl-ex?searchtype=author&query=Menon%2C+G">G. Menon</a>, <a href="/search/nucl-ex?searchtype=author&query=Panzieri%2C+D">D. Panzieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Sbrizzai%2C+G">G. Sbrizzai</a>, <a href="/search/nucl-ex?searchtype=author&query=Schopferer%2C+S">S. Schopferer</a>, <a href="/search/nucl-ex?searchtype=author&query=Slunecka%2C+M">M. Slunecka</a> , et al. (4 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="1807.00816v1-abstract-short" style="display: inline;"> After pioneering gaseous detectors of single photon for RICH applications using CsI solid state photocathodes in MWPCs within the RD26 collaboration and by the constructions for the RICH detector of the COMPASS experiment at CERN SPS, in 2016 we have upgraded COMPASS RICH by novel gaseous photon detectors based on MPGD technology. Four novel photon detectors, covering a total active area of 1.5~m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.00816v1-abstract-full').style.display = 'inline'; document.getElementById('1807.00816v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.00816v1-abstract-full" style="display: none;"> After pioneering gaseous detectors of single photon for RICH applications using CsI solid state photocathodes in MWPCs within the RD26 collaboration and by the constructions for the RICH detector of the COMPASS experiment at CERN SPS, in 2016 we have upgraded COMPASS RICH by novel gaseous photon detectors based on MPGD technology. Four novel photon detectors, covering a total active area of 1.5~m$^2$, have been installed in order to cope with the challenging efficiency and stability requirements of the COMPASS physics programme. These detectors are the first application in an experiment of MPGD-based single photon detectors. All aspects of the upgrade are presented, including engineering, mass production, quality assessment and performance. Perspectives for further developments in the field of gaseous single photon detectors are also presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.00816v1-abstract-full').style.display = 'none'; document.getElementById('1807.00816v1-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 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Proceedings for PM18-14th Pisa meeting on Advanced Detectors (presentation by Silvia Dalla Torre)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.02739">arXiv:1802.02739</a> <span> [<a href="https://arxiv.org/pdf/1802.02739">pdf</a>, <a href="https://arxiv.org/format/1802.02739">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.2019.04.038">10.1016/j.physletb.2019.04.038 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Antoshkin%2C+A">A. Antoshkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a> , et al. (202 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="1802.02739v2-abstract-short" style="display: inline;"> We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/$c$ polarized $渭^+$ and $渭^-$ beams of the CERN SPS impinging on a liquid hydrogen target. We determine the dependence of the average of the measured $渭^+$ and $渭^-$ cross sections for deeply virtual Compton scattering on the squared four-momentum transfer $t$ from the initial to the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02739v2-abstract-full').style.display = 'inline'; document.getElementById('1802.02739v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.02739v2-abstract-full" style="display: none;"> We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/$c$ polarized $渭^+$ and $渭^-$ beams of the CERN SPS impinging on a liquid hydrogen target. We determine the dependence of the average of the measured $渭^+$ and $渭^-$ cross sections for deeply virtual Compton scattering on the squared four-momentum transfer $t$ from the initial to the final final proton. The slope $B$ of the $t$-dependence is fitted with a single exponential function, which yields $B=(4.3 \ \pm \ 0.6_{\text{stat}}\_{- \ 0.3}^{+ \ 0.1}\big\rvert_{\text{sys}}) (\text{GeV}/c)^{-2}$. This result can be converted into an average transverse extension of partons in the proton, $\sqrt{\langle r_{\perp}^2 \rangle} = (0.58 \ \pm \ 0.04_{\text{stat}}\_{- \ 0.02}^{+ \ 0.01}\big\rvert_{\text{sys}})\text{fm}$. For this measurement, the average virtuality of the photon mediating the interaction is $\langle Q^2 \rangle = 1.8\,(\text{GeV/}c)^2$ and the average value of the Bjorken variable is $\langle x_{\text{Bj}} \rangle = 0.056$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02739v2-abstract-full').style.display = 'none'; document.getElementById('1802.02739v2-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 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 February, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">13 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2018-016 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1709.07374">arXiv:1709.07374</a> <span> [<a href="https://arxiv.org/pdf/1709.07374">pdf</a>, <a href="https://arxiv.org/format/1709.07374">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.97.032006">10.1103/PhysRevD.97.032006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Antoshkin%2C+A">A. Antoshkin</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a> , et al. (206 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="1709.07374v1-abstract-short" style="display: inline;"> A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaboration at CERN. The following kinematic domain is covered by the data: photon virtuality $Q^{2}>1$ (GeV/$c$)$^2$, invariant mass of the hadronic system $W > 5$ GeV/$c^2$, Bjorken scaling variable in the range… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.07374v1-abstract-full').style.display = 'inline'; document.getElementById('1709.07374v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1709.07374v1-abstract-full" style="display: none;"> A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaboration at CERN. The following kinematic domain is covered by the data: photon virtuality $Q^{2}>1$ (GeV/$c$)$^2$, invariant mass of the hadronic system $W > 5$ GeV/$c^2$, Bjorken scaling variable in the range $0.003 < x < 0.4$, fraction of the virtual photon energy carried by the hadron in the range $0.2 < z < 0.8$, square of the hadron transverse momentum with respect to the virtual photon direction in the range 0.02 (GeV/$c)^2 < P_{\rm{hT}}^{2} < 3$ (GeV/$c$)$^2$. The multiplicities are presented as a function of $P_{\rm{hT}}^{2}$ in three-dimensional bins of $x$, $Q^2$, $z$ and compared to previous semi-inclusive measurements. We explore the small-$P_{\rm{hT}}^{2}$ region, i.e. $P_{\rm{hT}}^{2} < 1$ (GeV/$c$)$^2$, where hadron transverse momenta are expected to arise from non-perturbative effects, and also the domain of larger $P_{\rm{hT}}^{2}$, where contributions from higher-order perturbative QCD are expected to dominate. The multiplicities are fitted using a single-exponential function at small $P_{\rm{hT}}^{2}$ to study the dependence of the average transverse momentum $\langle P_{\rm{hT}}^{2}\rangle$ on $x$, $Q^2$ and $z$. The power-law behaviour of the multiplicities at large $P_{\rm{hT}}^{2}$ is investigated using various functional forms. The fits describe the data reasonably well over the full measured range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1709.07374v1-abstract-full').style.display = 'none'; document.getElementById('1709.07374v1-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 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">28 pages, 20 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2017-253 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 97, 032006 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1608.06760">arXiv:1608.06760</a> <span> [<a href="https://arxiv.org/pdf/1608.06760">pdf</a>, <a href="https://arxiv.org/format/1608.06760">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.2017.01.053">10.1016/j.physletb.2017.01.053 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Augsten%2C+K">K. Augsten</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Ball%2C+M">M. Ball</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a> , et al. (202 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="1608.06760v1-abstract-short" style="display: inline;"> Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. The results are presented in three-dimensional bins of the Bjorken scaling variable x, the relative virtual-photon energy y, and the fraction z of the virtual-photon energy carried by the produced hadron. The data were obtained by the COMPASS Collaboration by scattering 160 GeV muons off an isoscalar 6… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.06760v1-abstract-full').style.display = 'inline'; document.getElementById('1608.06760v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1608.06760v1-abstract-full" style="display: none;"> Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. The results are presented in three-dimensional bins of the Bjorken scaling variable x, the relative virtual-photon energy y, and the fraction z of the virtual-photon energy carried by the produced hadron. The data were obtained by the COMPASS Collaboration by scattering 160 GeV muons off an isoscalar 6 LiD target. They cover the kinematic domain 1 (GeV/c)2 < Q2 < 60 (GeV/c)^2 in the photon virtuality, 0.004 < x < 0.4, 0.1 < y < 0.7, 0.20 < z < 0.85, and W > 5 GeV/c^2 in the invariant mass of the hadronic system. The results from the sum of the z-integrated K+ and K- multiplicities at high x point to a value of the non-strange quark fragmentation function larger than obtained by the earlier DSS fit. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.06760v1-abstract-full').style.display = 'none'; document.getElementById('1608.06760v1-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, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">10 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016--206 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.03725">arXiv:1606.03725</a> <span> [<a href="https://arxiv.org/pdf/1606.03725">pdf</a>, <a href="https://arxiv.org/format/1606.03725">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.nuclphysb.2016.12.015">10.1016/j.nuclphysb.2016.12.015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exclusive $蠅$ meson muoproduction on transversely polarised protons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a> , et al. (204 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="1606.03725v2-abstract-short" style="display: inline;"> Exclusive production of $蠅$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03725v2-abstract-full').style.display = 'inline'; document.getElementById('1606.03725v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.03725v2-abstract-full" style="display: none;"> Exclusive production of $蠅$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and transverse momentum squared of the $蠅$ meson $0.05~(\mathrm{GeV}/\mathit{c})^2 < p_{T}^{2} < 0.5~(\mathrm{GeV}/\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity-flip Generalised Parton Distributions (GPD) $E$ that are related to the orbital angular momentum of quarks, the chiral-odd GPDs $H_{T}$ that are related to the transversity Parton Distribution Functions, and the sign of the $蟺蠅$ transition form factor. The results are compared to recent calculations of a GPD-based model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03725v2-abstract-full').style.display = 'none'; document.getElementById('1606.03725v2-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, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">23 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016-157 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.02695">arXiv:1604.02695</a> <span> [<a href="https://arxiv.org/pdf/1604.02695">pdf</a>, <a href="https://arxiv.org/format/1604.02695">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.2016.09.042">10.1016/j.physletb.2016.09.042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiplicities of charged pions and unidentified charged hadrons from deep-inelastic scattering of muons off an isoscalar target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a> , et al. (203 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="1604.02695v2-abstract-short" style="display: inline;"> Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the relative hadron energy $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam and an isoscalar target ($^6$LiD). They cover the kinematic domain in the photon virtuality… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02695v2-abstract-full').style.display = 'inline'; document.getElementById('1604.02695v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.02695v2-abstract-full" style="display: none;"> Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the relative hadron energy $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam and an isoscalar target ($^6$LiD). They cover the kinematic domain in the photon virtuality $Q^2$ > 1(GeV/c$)^2$, $0.004 < x < 0.4$, $0.2 < z < 0.85$ and $0.1 < y < 0.7$. In addition, a leading-order pQCD analysis was performed using the pion multiplicity results to extract quark fragmentation functions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02695v2-abstract-full').style.display = 'none'; document.getElementById('1604.02695v2-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 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016-095 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1408.4286">arXiv:1408.4286</a> <span> [<a href="https://arxiv.org/pdf/1408.4286">pdf</a>, <a href="https://arxiv.org/format/1408.4286">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.2014.11.058">10.1016/j.physletb.2014.11.058 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Odd and Even Partial Waves of $畏蟺^-$ and $畏'蟺^-$ in $蟺^-p\to畏^{(\prime)}蟺^-p$ at $191\,\textrm{GeV}/c$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a> , et al. (184 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="1408.4286v1-abstract-short" style="display: inline;"> Exclusive production of $畏蟺^-$ and $畏'蟺^-$ has been studied with a $191\,\textrm{GeV}/c$ $蟺^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4286v1-abstract-full').style.display = 'inline'; document.getElementById('1408.4286v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1408.4286v1-abstract-full" style="display: none;"> Exclusive production of $畏蟺^-$ and $畏'蟺^-$ has been studied with a $191\,\textrm{GeV}/c$ $蟺^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled by kinematical factors) and the relative phases. The known resonances $a_2(1320)$ and $a_4(2040)$ are in line with this similarity. In contrast, a strong enhancement of $畏'蟺^-$ over $畏蟺^-$ is found for the $L=1,3,5$ waves, which carry non-$q\bar q$ quantum numbers. The $L=1$ intensity peaks at $1.7\,\textrm{GeV}/c^2$ in $畏'蟺^-$ and at $1.4\,\textrm{GeV}/c^2$ in $畏蟺^-$, the corresponding phase motions with respect to $L=2$ are different. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4286v1-abstract-full').style.display = 'none'; document.getElementById('1408.4286v1-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 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 5 figures and 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.6377">arXiv:1405.6377</a> <span> [<a href="https://arxiv.org/pdf/1405.6377">pdf</a>, <a href="https://arxiv.org/format/1405.6377">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.114.062002">10.1103/PhysRevLett.114.062002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the charged-pion polarisability </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a> , et al. (188 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="1405.6377v2-abstract-short" style="display: inline;"> The COMPASS collaboration at CERN has investigated pion Compton scattering, $蟺^-纬\rightarrow 蟺^-纬$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $蟺^-\mathrm{Ni}\rightarrow蟺^-纬\;\mathrm{Ni}$, which is initiated by 190\,GeV pions impinging on a nickel target. The exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at smal… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6377v2-abstract-full').style.display = 'inline'; document.getElementById('1405.6377v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.6377v2-abstract-full" style="display: none;"> The COMPASS collaboration at CERN has investigated pion Compton scattering, $蟺^-纬\rightarrow 蟺^-纬$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $蟺^-\mathrm{Ni}\rightarrow蟺^-纬\;\mathrm{Ni}$, which is initiated by 190\,GeV pions impinging on a nickel target. The exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, $Q^2<0.0015$\,(GeV/$c$)$^2$. From a sample of 63\,000 events the pion electric polarisability is determined to be $伪_蟺 =\ (\,2.0\ \pm\ 0.6_{\mbox{\scriptsize stat}}\ \pm\ 0.7_{\mbox{\scriptsize syst}}\,) \times 10^{-4}\,\mbox{fm}^3$ under the assumption $伪_蟺=-尾_蟺$, which relates the electric and magnetic dipole polarisabilities. It is the most precise measurement of this fundamental low-energy parameter of strong interaction, that has been addressed since long by various methods with conflicting outcomes. While this result is in tension with previous dedicated measurements, it is found in agreement with the expectation from chiral perturbation theory. An additional measurement replacing pions by muons, for which the cross-section behavior is unambigiously known, was performed for an independent estimate of the systematic uncertainty. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6377v2-abstract-full').style.display = 'none'; document.getElementById('1405.6377v2-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 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published version: 9 pages, 3 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 114, 062002 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.6376">arXiv:1405.6376</a> <span> [<a href="https://arxiv.org/pdf/1405.6376">pdf</a>, <a href="https://arxiv.org/format/1405.6376">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.nuclphysb.2014.07.020">10.1016/j.nuclphysb.2014.07.020 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spin alignment and violation of the OZI rule in exclusive $蠅$ and $蠁$ production in pp collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</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=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a> , et al. (184 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="1405.6376v1-abstract-short" style="display: inline;"> Exclusive production of the isoscalar vector mesons $蠅$ and $蠁$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6376v1-abstract-full').style.display = 'inline'; document.getElementById('1405.6376v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.6376v1-abstract-full" style="display: none;"> Exclusive production of the isoscalar vector mesons $蠅$ and $蠁$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass $M_{p\mathrm{V}}$ of the system formed by fast proton $p_\mathrm{fast}$ and vector meson $V$ is discussed in terms of diffractive production of $p_\mathrm{fast}V$ resonances in competition with central production. The measurement of the spin density matrix element $蟻_{00}$ of the vector mesons in different selected reference frames provides another handle to distinguish the contributions of these two major reaction types. Again, dependences of the alignment on $x_{F}$ and on $M_{p\mathrm{V}}$ are found. Most of the observations can be traced back to the existence of several excited baryon states contributing to $蠅$ production which are absent in the case of the $蠁$ meson. Removing the low-mass $M_{p\mathrm{V}}$ resonant region, the OZI rule is found to be violated by a factor of eight, independently of $x_\mathrm{F}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6376v1-abstract-full').style.display = 'none'; document.getElementById('1405.6376v1-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 13 figures and 5 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1401.3192">arXiv:1401.3192</a> <span> [<a href="https://arxiv.org/pdf/1401.3192">pdf</a>, <a href="https://arxiv.org/ps/1401.3192">ps</a>, <a href="https://arxiv.org/format/1401.3192">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Comments concerning the paper "Measurement of negatively charged pion spectra in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c" by the NA61 collaboration </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H+G">H. G. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Makariev%2C+M">M. Makariev</a>, <a href="/search/nucl-ex?searchtype=author&query=Varga%2C+D">D. Varga</a>, <a href="/search/nucl-ex?searchtype=author&query=Wenig%2C+S">S. Wenig</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="1401.3192v1-abstract-short" style="display: inline;"> New data from the NA61 collaboration on the production of negative pions in p+p interactions at beam momenta between 20 and 158 GeV/c are critically compared to available results in the same energy range. It is concluded that the NA61 data show some discrepancies with the previous results. This concerns in particular the total yields, the $p_T$ integrated rapidity distributions and the double diff… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1401.3192v1-abstract-full').style.display = 'inline'; document.getElementById('1401.3192v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1401.3192v1-abstract-full" style="display: none;"> New data from the NA61 collaboration on the production of negative pions in p+p interactions at beam momenta between 20 and 158 GeV/c are critically compared to available results in the same energy range. It is concluded that the NA61 data show some discrepancies with the previous results. This concerns in particular the total yields, the $p_T$ integrated rapidity distributions and the double differential cross sections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1401.3192v1-abstract-full').style.display = 'none'; document.getElementById('1401.3192v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 January, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 13 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2013-225 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1454">arXiv:1310.1454</a> <span> [<a href="https://arxiv.org/pdf/1310.1454">pdf</a>, <a href="https://arxiv.org/format/1310.1454">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.2014.02.005">10.1016/j.physletb.2014.02.005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse target spin asymmetries in exclusive $蟻^0$ muoproduction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M+G">M. G. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexakhin%2C+V+Y">V. Yu. Alexakhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexandrov%2C+Y">Yu. Alexandrov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badellek%2C+B">B. Badellek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertini%2C+R">R. Bertini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a>, <a href="/search/nucl-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a> , et al. (188 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="1310.1454v2-abstract-short" style="display: inline;"> Exclusive production of $蟻^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin 蠁_S$ asymmetry is found to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetries are also found to be of sm… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1454v2-abstract-full').style.display = 'inline'; document.getElementById('1310.1454v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1454v2-abstract-full" style="display: none;"> Exclusive production of $蟻^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin 蠁_S$ asymmetry is found to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetries are also found to be of small magnitude and consistent with zero within experimental uncertainties. Very recent calculations using a GPD-based model agree well with the present results. The data is interpreted as evidence for the existence of chiral-odd, transverse generalized parton distributions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1454v2-abstract-full').style.display = 'none'; document.getElementById('1310.1454v2-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, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, two tables, 5 figures, bibliography 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/1304.0952">arXiv:1304.0952</a> <span> [<a href="https://arxiv.org/pdf/1304.0952">pdf</a>, <a href="https://arxiv.org/format/1304.0952">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/10.1140/epjc/s10052-013-2581-9">10.1140/epjc/s10052-013-2581-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of 危(1385) and 螢(1321) hyperon and antihyperon production in deep inelastic muon scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexakhin%2C+V+Y">V. Yu. Alexakhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexandrov%2C+Y">Yu. Alexandrov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertini%2C+R">R. Bertini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a>, <a href="/search/nucl-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buechele%2C+M">M. Buechele</a> , et al. (182 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="1304.0952v2-abstract-short" style="display: inline;"> Large samples of 螞, 危(1385) and 螢(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of 危(1385)^+, 危(1385)^-, \bar危(1385)^-, \bar危(1385)^+, 螢(1321)^-, and \bar螢(1321)^+ hyperons decaying into 螞(\bar螞)蟺were measured. The heavy hyperon to 螞and heavy antihyperon to \bar螞 yield ratios were found t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.0952v2-abstract-full').style.display = 'inline'; document.getElementById('1304.0952v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1304.0952v2-abstract-full" style="display: none;"> Large samples of 螞, 危(1385) and 螢(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of 危(1385)^+, 危(1385)^-, \bar危(1385)^-, \bar危(1385)^+, 螢(1321)^-, and \bar螢(1321)^+ hyperons decaying into 螞(\bar螞)蟺were measured. The heavy hyperon to 螞and heavy antihyperon to \bar螞 yield ratios were found to be in the range 3.8% to 5.6% with a relative uncertainty of about 10%. They were used to tune the parameters relevant for strange particle production of the LEPTO Monte Carlo generator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.0952v2-abstract-full').style.display = 'none'; document.getElementById('1304.0952v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 4 figures and 3 tables, 1 Appendix with 3 figures. Version accepted by the Editor</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1210.6775">arXiv:1210.6775</a> <span> [<a href="https://arxiv.org/pdf/1210.6775">pdf</a>, <a href="https://arxiv.org/ps/1210.6775">ps</a>, <a href="https://arxiv.org/format/1210.6775">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/10.1140/epjc/s10052-013-2329-6">10.1140/epjc/s10052-013-2329-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A survey of backward proton and pion production in p+C interactions at beam momenta from 1 to 400 GeV/c </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Chvala%2C+O">O. Chvala</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H+G">H. G. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Makariev%2C+M">M. Makariev</a>, <a href="/search/nucl-ex?searchtype=author&query=Rybicki%2C+A">A. Rybicki</a>, <a href="/search/nucl-ex?searchtype=author&query=Varga%2C+D">D. Varga</a>, <a href="/search/nucl-ex?searchtype=author&query=Wenig%2C+S">S. Wenig</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="1210.6775v1-abstract-short" style="display: inline;"> New data on proton and pion production in p+C interactions from the CERN PS and SPS accelerators are used in conjunction with other available data sets to perform a comprehensive survey of backward hadronic cross sections. This survey covers the complete backward hemisphere in the range of lab angles from 10 to 180 degrees, from 0.2 to 1.4 GeV/c in lab momentum and from 1 to 400 GeV/c in projectil… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.6775v1-abstract-full').style.display = 'inline'; document.getElementById('1210.6775v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.6775v1-abstract-full" style="display: none;"> New data on proton and pion production in p+C interactions from the CERN PS and SPS accelerators are used in conjunction with other available data sets to perform a comprehensive survey of backward hadronic cross sections. This survey covers the complete backward hemisphere in the range of lab angles from 10 to 180 degrees, from 0.2 to 1.4 GeV/c in lab momentum and from 1 to 400 GeV/c in projectile momentum. Using the constraints of continuity and smoothness of the angular, momentum and energy dependences a consistent description of the inclusive cross sections is established which allows the control of the internal consistency of the nineteen available data sets. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.6775v1-abstract-full').style.display = 'none'; document.getElementById('1210.6775v1-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 October, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2012. </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">52 pages 47 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2012-154 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1207.6520">arXiv:1207.6520</a> <span> [<a href="https://arxiv.org/pdf/1207.6520">pdf</a>, <a href="https://arxiv.org/ps/1207.6520">ps</a>, <a href="https://arxiv.org/format/1207.6520">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Inclusive production of protons, anti-protons, neutrons, deuterons and tritons in p+C collisions at 158 GeV/c beam momentum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=The+NA49+Collaboration"> The NA49 Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Baatar%2C+B">B. Baatar</a>, <a href="/search/nucl-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/nucl-ex?searchtype=author&query=Bartke%2C+J">J. Bartke</a>, <a href="/search/nucl-ex?searchtype=author&query=Betev%2C+L">L. Betev</a>, <a href="/search/nucl-ex?searchtype=author&query=Chvala%2C+O">O. Chvala</a>, <a href="/search/nucl-ex?searchtype=author&query=Dolejsi%2C+J">J. Dolejsi</a>, <a href="/search/nucl-ex?searchtype=author&query=Eckardt%2C+V">V. Eckardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H+G">H. G. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Fodor%2C+Z">Z. Fodor</a>, <a href="/search/nucl-ex?searchtype=author&query=Karev%2C+A">A. Karev</a>, <a href="/search/nucl-ex?searchtype=author&query=Kolesnikov%2C+V">V. Kolesnikov</a>, <a href="/search/nucl-ex?searchtype=author&query=Kowalski%2C+M">M. Kowalski</a>, <a href="/search/nucl-ex?searchtype=author&query=Makariev%2C+M">M. Makariev</a>, <a href="/search/nucl-ex?searchtype=author&query=Malakhov%2C+A">A. Malakhov</a>, <a href="/search/nucl-ex?searchtype=author&query=Mateev%2C+M">M. Mateev</a>, <a href="/search/nucl-ex?searchtype=author&query=Melkumov%2C+G">G. Melkumov</a>, <a href="/search/nucl-ex?searchtype=author&query=Rybicki%2C+A">A. Rybicki</a>, <a href="/search/nucl-ex?searchtype=author&query=Schmitz%2C+N">N. Schmitz</a>, <a href="/search/nucl-ex?searchtype=author&query=Seyboth%2C+P">P. Seyboth</a>, <a href="/search/nucl-ex?searchtype=author&query=Stock%2C+R">R. Stock</a>, <a href="/search/nucl-ex?searchtype=author&query=Tinti%2C+G">G. Tinti</a>, <a href="/search/nucl-ex?searchtype=author&query=Varga%2C+D">D. Varga</a>, <a href="/search/nucl-ex?searchtype=author&query=Vesztergombi%2C+G">G. Vesztergombi</a>, <a href="/search/nucl-ex?searchtype=author&query=Wenig%2C+S">S. Wenig</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="1207.6520v3-abstract-short" style="display: inline;"> The production of protons, anti-protons, neutrons, deuterons and tritons in minimum bias p+C interactions is studied using a sample of 385 734 inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The data cover a phase space area ranging from 0 to 1.9 GeV/c in transverse momentum and in Feynman x from -0.80 to 0.95 for protons, from -0.2 to 0.4 for anti-prot… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.6520v3-abstract-full').style.display = 'inline'; document.getElementById('1207.6520v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1207.6520v3-abstract-full" style="display: none;"> The production of protons, anti-protons, neutrons, deuterons and tritons in minimum bias p+C interactions is studied using a sample of 385 734 inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The data cover a phase space area ranging from 0 to 1.9 GeV/c in transverse momentum and in Feynman x from -0.80 to 0.95 for protons, from -0.2 to 0.4 for anti-protons and from 0.2 to 0.95 for neutrons. Existing data in the far backward hemisphere are used to extend the coverage for protons and light nuclear fragments into the region of intranuclear cascading. The use of corresponding data sets obtained in hadron-proton collisions with the same detector allows for the detailed analysis and model-independent separation of the three principle components of hadronization in p+C interactions, namely projectile fragmentation, target fragmentation of participant nucleons and intranuclear cascading. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1207.6520v3-abstract-full').style.display = 'none'; document.getElementById('1207.6520v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 July, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2012. </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">104 pages, 114 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-EP-2012-153 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ex/0606029">arXiv:hep-ex/0606029</a> <span> [<a href="https://arxiv.org/pdf/hep-ex/0606029">pdf</a>, <a href="https://arxiv.org/ps/hep-ex/0606029">ps</a>, <a href="https://arxiv.org/format/hep-ex/0606029">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/10.1140/epjc/s10052-006-0166-6">10.1140/epjc/s10052-006-0166-6 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Charged Pion Production in p+C Collisions at 158 GeV/c Beam Momentum: Discussion </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Barr%2C+G">G. Barr</a>, <a href="/search/nucl-ex?searchtype=author&query=Chvala%2C+O">O. Chvala</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H+G">H. G. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Kreps%2C+M">M. Kreps</a>, <a href="/search/nucl-ex?searchtype=author&query=Makariev%2C+M">M. Makariev</a>, <a href="/search/nucl-ex?searchtype=author&query=Pattison%2C+C">C. Pattison</a>, <a href="/search/nucl-ex?searchtype=author&query=Rybicki%2C+A">A. Rybicki</a>, <a href="/search/nucl-ex?searchtype=author&query=Varga%2C+D">D. Varga</a>, <a href="/search/nucl-ex?searchtype=author&query=Wenig%2C+S">S. Wenig</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="hep-ex/0606029v2-abstract-short" style="display: inline;"> The new data on pion production in p+C interactions from the NA49 experiment at the CERN SPS are used for a detailed study of hadronization in the collision of protons with light nuclei. The comparison to the extensive set of data from p+p collisions obtained with the same detector allows for the separation and extraction of the projectile and target contributions to the pion yield both in longi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0606029v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ex/0606029v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ex/0606029v2-abstract-full" style="display: none;"> The new data on pion production in p+C interactions from the NA49 experiment at the CERN SPS are used for a detailed study of hadronization in the collision of protons with light nuclei. The comparison to the extensive set of data from p+p collisions obtained with the same detector allows for the separation and extraction of the projectile and target contributions to the pion yield both in longitudinal and in transverse momentum. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ex/0606029v2-abstract-full').style.display = 'none'; document.getElementById('hep-ex/0606029v2-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 June, 2006; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 June, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2006. </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">44 pages, 37 figures, submitted to European Journal of Physics. Fixing misplaced figures, no change of text</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur.Phys.J.C49:919-945,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/0605025">arXiv:nucl-ex/0605025</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0605025">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0605025">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0605025">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.74.015206">10.1103/PhysRevC.74.015206 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental determination of the complete spin structure for anti-proton + proton -> anti-螞+ 螞at anti-proton beam momentum of 1.637 GeV/c </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=The+PS185+collaboration"> The PS185 collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Paschke%2C+K+.+D">K . D. Paschke</a>, <a href="/search/nucl-ex?searchtype=author&query=Quinn%2C+B">B. Quinn</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdoz%2C+A">A. Berdoz</a>, <a href="/search/nucl-ex?searchtype=author&query=Franklin%2C+G+B">G. B. Franklin</a>, <a href="/search/nucl-ex?searchtype=author&query=Khaustov%2C+P">P. Khaustov</a>, <a href="/search/nucl-ex?searchtype=author&query=Meyer%2C+C+A">C. A. Meyer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradtke%2C+C">C. Bradtke</a>, <a href="/search/nucl-ex?searchtype=author&query=Gehring%2C+R">R. Gehring</a>, <a href="/search/nucl-ex?searchtype=author&query=Goertz%2C+S">S. Goertz</a>, <a href="/search/nucl-ex?searchtype=author&query=Harmsen%2C+J">J. Harmsen</a>, <a href="/search/nucl-ex?searchtype=author&query=Meier%2C+A">A. Meier</a>, <a href="/search/nucl-ex?searchtype=author&query=Meyer%2C+W">W. Meyer</a>, <a href="/search/nucl-ex?searchtype=author&query=Radtke%2C+E">E. Radtke</a>, <a href="/search/nucl-ex?searchtype=author&query=Reicherz%2C+G">G. Reicherz</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutz%2C+H">H. Dutz</a>, <a href="/search/nucl-ex?searchtype=author&query=Pluckthun%2C+M">M. Pluckthun</a>, <a href="/search/nucl-ex?searchtype=author&query=Schoch%2C+B">B. Schoch</a>, <a href="/search/nucl-ex?searchtype=author&query=Dennert%2C+H">H. Dennert</a>, <a href="/search/nucl-ex?searchtype=author&query=Eyrich%2C+W">W. Eyrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauffe%2C+J">J. Hauffe</a>, <a href="/search/nucl-ex?searchtype=author&query=Metzger%2C+A">A. Metzger</a>, <a href="/search/nucl-ex?searchtype=author&query=Moosburger%2C+M">M. Moosburger</a>, <a href="/search/nucl-ex?searchtype=author&query=Stinzing%2C+F">F. Stinzing</a>, <a href="/search/nucl-ex?searchtype=author&query=Wirth%2C+S">St. Wirth</a> , et al. (24 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="nucl-ex/0605025v1-abstract-short" style="display: inline;"> The reaction anti-proton + proton -> anti-螞+ 螞-> anti-proton + 蟺^+ + proton + 蟺^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of 螞/anti-螞decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0605025v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0605025v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0605025v1-abstract-full" style="display: none;"> The reaction anti-proton + proton -> anti-螞+ 螞-> anti-proton + 蟺^+ + proton + 蟺^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of 螞/anti-螞decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-螞+ 螞near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0605025v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0605025v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 May, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2006. </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 Phys. Rev. C. Tables of results (i.e. Ref. 24) are available at http://www-meg.phys.cmu.edu/~bquinn/ps185_pub/results.tab 24 pages, 16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.C74:015206,2006 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/0206005">arXiv:nucl-ex/0206005</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0206005">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0206005">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0206005">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.89.212302">10.1103/PhysRevLett.89.212302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Spin Transfer Observables in Antiproton-Proton -> Antilambda-Lambda at 1.637 GeV/c </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdoz%2C+A">A. Berdoz</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradtke%2C+C">C. Bradtke</a>, <a href="/search/nucl-ex?searchtype=author&query=Br%C3%B6ders%2C+R">R. Br枚ders</a>, <a href="/search/nucl-ex?searchtype=author&query=Bunker%2C+B">B. Bunker</a>, <a href="/search/nucl-ex?searchtype=author&query=Dennert%2C+H">H. Dennert</a>, <a href="/search/nucl-ex?searchtype=author&query=Dutz%2C+H">H. Dutz</a>, <a href="/search/nucl-ex?searchtype=author&query=Eilerts%2C+S">S. Eilerts</a>, <a href="/search/nucl-ex?searchtype=author&query=Eyrich%2C+W">W. Eyrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Fields%2C+D">D. Fields</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Franklin%2C+G">G. Franklin</a>, <a href="/search/nucl-ex?searchtype=author&query=Franz%2C+J">J. Franz</a>, <a href="/search/nucl-ex?searchtype=author&query=Gehring%2C+R">R. Gehring</a>, <a href="/search/nucl-ex?searchtype=author&query=Geyer%2C+R">R. Geyer</a>, <a href="/search/nucl-ex?searchtype=author&query=Goertz%2C+S">S. Goertz</a>, <a href="/search/nucl-ex?searchtype=author&query=Harmsen%2C+J">J. Harmsen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hauffe%2C+J">J. Hauffe</a>, <a href="/search/nucl-ex?searchtype=author&query=Heinsius%2C+F+H">F. H. Heinsius</a>, <a href="/search/nucl-ex?searchtype=author&query=Hertzog%2C+D">D. Hertzog</a>, <a href="/search/nucl-ex?searchtype=author&query=Johansson%2C+T">T. Johansson</a>, <a href="/search/nucl-ex?searchtype=author&query=Jones%2C+T">T. Jones</a>, <a href="/search/nucl-ex?searchtype=author&query=Khaustov%2C+P">P. Khaustov</a>, <a href="/search/nucl-ex?searchtype=author&query=Kilian%2C+K">K. Kilian</a>, <a href="/search/nucl-ex?searchtype=author&query=Kingsberry%2C+P">P. Kingsberry</a> , et al. (23 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="nucl-ex/0206005v1-abstract-short" style="display: inline;"> Spin transfer observables for the strangeness-production reaction Antiproton-Proton -> Antilambda-Lambda have been measured by the PS185 collaboration using a transversely-polarized frozen-spin target with an antiproton beam momentum of 1.637 GeV/c at the Low Energy Antiproton Ring at CERN. This measurement investigates observables for which current models of the reaction near threshold make sig… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0206005v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0206005v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0206005v1-abstract-full" style="display: none;"> Spin transfer observables for the strangeness-production reaction Antiproton-Proton -> Antilambda-Lambda have been measured by the PS185 collaboration using a transversely-polarized frozen-spin target with an antiproton beam momentum of 1.637 GeV/c at the Low Energy Antiproton Ring at CERN. This measurement investigates observables for which current models of the reaction near threshold make significantly differing predictions. Those models are in good agreement with existing measurements performed with unpolarized particles in the initial state. Theoretical attention has focused on the fact that these models produce conflicting predictions for the spin-transfer observables D_{nn} and K_{nn}, which are measurable only with polarized target or beam. Results presented here for D_{nn} and K_{nn} are found to be in disagreement with predictions from existing models. These results also underscore the importance of singlet-state production at backward angles, while current models predict complete or near-complete triplet-state dominance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0206005v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0206005v1-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 June, 2002; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2002. </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, 3 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.89:212302,2002 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/9912007">arXiv:nucl-ex/9912007</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/9912007">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/9912007">ps</a>, <a href="https://arxiv.org/format/nucl-ex/9912007">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.61.054603">10.1103/PhysRevC.61.054603 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evidence of Xi hypernuclear production in the ^{12}C(K^-,K^+)^{12}_{Xi}Be reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Khaustov%2C+P">P. Khaustov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alburger%2C+D+E">D. E. Alburger</a>, <a href="/search/nucl-ex?searchtype=author&query=Barnes%2C+P+D">P. D. Barnes</a>, <a href="/search/nucl-ex?searchtype=author&query=Bassalleck%2C+B">B. Bassalleck</a>, <a href="/search/nucl-ex?searchtype=author&query=Berdoz%2C+A+R">A. R. Berdoz</a>, <a href="/search/nucl-ex?searchtype=author&query=Biglan%2C+A">A. Biglan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buerger%2C+T">T. Buerger</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=Chrien%2C+R+E">R. E. Chrien</a>, <a href="/search/nucl-ex?searchtype=author&query=Davis%2C+C+A">C. A. Davis</a>, <a href="/search/nucl-ex?searchtype=author&query=Fischer%2C+H">H. Fischer</a>, <a href="/search/nucl-ex?searchtype=author&query=Franklin%2C+G+B">G. B. Franklin</a>, <a href="/search/nucl-ex?searchtype=author&query=Franz%2C+J">J. Franz</a>, <a href="/search/nucl-ex?searchtype=author&query=Gan%2C+L">L. Gan</a>, <a href="/search/nucl-ex?searchtype=author&query=Ichikawa%2C+A">A. Ichikawa</a>, <a href="/search/nucl-ex?searchtype=author&query=IijIma%2C+T">T. IijIma</a>, <a href="/search/nucl-ex?searchtype=author&query=Imai%2C+K">K. Imai</a>, <a href="/search/nucl-ex?searchtype=author&query=Kondo%2C+Y">Y. Kondo</a>, <a href="/search/nucl-ex?searchtype=author&query=Koran%2C+P">P. Koran</a>, <a href="/search/nucl-ex?searchtype=author&query=Landry%2C+M">M. Landry</a>, <a href="/search/nucl-ex?searchtype=author&query=Lee%2C+L">L. Lee</a>, <a href="/search/nucl-ex?searchtype=author&query=Lowe%2C+J">J. Lowe</a>, <a href="/search/nucl-ex?searchtype=author&query=Magahiz%2C+R">R. Magahiz</a>, <a href="/search/nucl-ex?searchtype=author&query=May%2C+M">M. May</a>, <a href="/search/nucl-ex?searchtype=author&query=McCrady%2C+R">R. McCrady</a> , et al. (20 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="nucl-ex/9912007v1-abstract-short" style="display: inline;"> The E885 collaboration utilized the 1.8 GeV/c K^- beam line at the AGS to accumulate 3 x 10^5 (K^-,K^+) events. Xi hypernuclear states are expected to be produced through the reaction K^- + ^{12}C -> K^+ + ^{12}_{Xi}Be. The measured missing-mass spectrum indicates the existence of a signal below the threshold for free Xi production. Although the resolution was not sufficient to resolve discrete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9912007v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/9912007v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/9912007v1-abstract-full" style="display: none;"> The E885 collaboration utilized the 1.8 GeV/c K^- beam line at the AGS to accumulate 3 x 10^5 (K^-,K^+) events. Xi hypernuclear states are expected to be produced through the reaction K^- + ^{12}C -> K^+ + ^{12}_{Xi}Be. The measured missing-mass spectrum indicates the existence of a signal below the threshold for free Xi production. Although the resolution was not sufficient to resolve discrete hypernuclear states, the excess of events in the region of missing mass, kinematically inaccessible in free Xi production, is compared to theoretical prediction for ^{12}_{Xi}Be production. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9912007v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/9912007v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 December, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 1999. </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 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.C61:054603,2000 </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 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