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</div> <div class="control"> <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/2309.16877">arXiv:2309.16877</a> <span> [<a href="https://arxiv.org/pdf/2309.16877">pdf</a>, <a href="https://arxiv.org/format/2309.16877">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Achieving ultra-low and -uniform residual magnetic fields in a very large magnetically shielded room for fundamental physics experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Bouillaud%2C+T">T. Bouillaud</a>, <a href="/search/hep-ex?searchtype=author&query=Bowles%2C+D">D. Bowles</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+W">W. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/hep-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Grujic%2C+Z+D">Z. D. Grujic</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Kletzl%2C+V">V. Kletzl</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/hep-ex?searchtype=author&query=Lejuez%2C+A">A. Lejuez</a> , et al. (25 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.16877v1-abstract-short" style="display: inline;"> High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optim… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16877v1-abstract-full').style.display = 'inline'; document.getElementById('2309.16877v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.16877v1-abstract-full" style="display: none;"> High-precision searches for an electric dipole moment of the neutron (nEDM) require stable and uniform magnetic field environments. We present the recent achievements of degaussing and equilibrating the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute. We present the final degaussing configuration that will be used for n2EDM after numerous studies. The optimized procedure results in a residual magnetic field that has been reduced by a factor of two. The ultra-low field is achieved with the full magnetic-field-coil system, and a large vacuum vessel installed, both in the MSR. In the inner volume of ~1.4 m^3, the field is now more uniform and below 300 pT. In addition, the procedure is faster and dissipates less heat into the magnetic environment, which in turn, reduces its thermal relaxation time from 12 h down to ~1.5 h. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16877v1-abstract-full').style.display = 'none'; document.getElementById('2309.16877v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2307.07588">arXiv:2307.07588</a> <span> [<a href="https://arxiv.org/pdf/2307.07588">pdf</a>, <a href="https://arxiv.org/format/2307.07588">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"> A large 'Active Magnetic Shield' for a high-precision experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Bouillaud%2C+T">T. Bouillaud</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+J">J. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chen%2C+W">W. Chen</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Grujic%2C+Z+D">Z. D. Grujic</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P">P. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Kletzl%2C+V">V. Kletzl</a>, <a href="/search/hep-ex?searchtype=author&query=Koss%2C+P+A">P. A. Koss</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a> , et al. (26 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2307.07588v1-abstract-short" style="display: inline;"> We present a novel Active Magnetic Shield (AMS), designed and implemented for the n2EDM experiment at the Paul Scherrer Institute. The experiment will perform a high-sensitivity search for the electric dipole moment of the neutron. Magnetic-field stability and control is of key importance for n2EDM. A large, cubic, 5m side length, magnetically shielded room (MSR) provides a passive, quasi-static s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.07588v1-abstract-full').style.display = 'inline'; document.getElementById('2307.07588v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2307.07588v1-abstract-full" style="display: none;"> We present a novel Active Magnetic Shield (AMS), designed and implemented for the n2EDM experiment at the Paul Scherrer Institute. The experiment will perform a high-sensitivity search for the electric dipole moment of the neutron. Magnetic-field stability and control is of key importance for n2EDM. A large, cubic, 5m side length, magnetically shielded room (MSR) provides a passive, quasi-static shielding-factor of about 10^5 for its inner sensitive volume. The AMS consists of a system of eight complex, feedback-controlled compensation coils constructed on an irregular grid spanned on a volume of less than 1000m^3 around the MSR. The AMS is designed to provide a stable and uniform magnetic-field environment around the MSR, while being reasonably compact. The system can compensate static and variable magnetic fields up to +-50muT (homogeneous components) and +-5muT (first-order gradients), suppressing them to a few muT in the sub-Hertz frequency range. The presented design concept and implementation of the AMS fulfills the requirements of the n2EDM experiment and can be useful for other applications, where magnetically silent environments are important and spatial constraints inhibit simpler geometrical solutions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2307.07588v1-abstract-full').style.display = 'none'; document.getElementById('2307.07588v1-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 July, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.02403">arXiv:2212.02403</a> <span> [<a href="https://arxiv.org/pdf/2212.02403">pdf</a>, <a href="https://arxiv.org/format/2212.02403">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.21468/SciPostPhys.15.2.058">10.21468/SciPostPhys.15.2.058 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for ultralight axion dark matter in a side-band analysis of a 199Hg free-spin precession signal </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Dechenaux%2C+B">B. Dechenaux</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/hep-ex?searchtype=author&query=Koss%2C+P+A">P. A. Koss</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/hep-ex?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/hep-ex?searchtype=author&query=Mohanmurthy%2C+P">P. Mohanmurthy</a>, <a href="/search/hep-ex?searchtype=author&query=Pais%2C+D">D. Pais</a>, <a href="/search/hep-ex?searchtype=author&query=Piegsa%2C+F+M">F. M. Piegsa</a> , et al. (13 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.02403v2-abstract-short" style="display: inline;"> Ultra-low-mass axions are a viable dark matter candidate and may form a coherently oscillating classical field. Nuclear spins in experiments on Earth might couple to this oscillating axion dark-matter field, when propagating on Earth's trajectory through our Galaxy. This spin coupling resembles an oscillating pseudo-magnetic field which modulates the spin precession of nuclear spins. Here we repor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.02403v2-abstract-full').style.display = 'inline'; document.getElementById('2212.02403v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.02403v2-abstract-full" style="display: none;"> Ultra-low-mass axions are a viable dark matter candidate and may form a coherently oscillating classical field. Nuclear spins in experiments on Earth might couple to this oscillating axion dark-matter field, when propagating on Earth's trajectory through our Galaxy. This spin coupling resembles an oscillating pseudo-magnetic field which modulates the spin precession of nuclear spins. Here we report on the null result of a demonstration experiment searching for a frequency modulation of the free spin-precession signal of \magHg in a \SI{1}{\micro\tesla} magnetic field. Our search covers the axion mass range $10^{-16}~\textrm{eV} \lesssim m_a \lesssim 10^{-13}~\textrm{eV}$ and achieves a peak sensitivity to the axion-nucleon coupling of $g_{aNN} \approx 3.5 \times 10^{-6}~\textrm{GeV}^{-1}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.02403v2-abstract-full').style.display = 'none'; document.getElementById('2212.02403v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 4 images, submitted to SciPost Physics</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> SciPost Phys. 15, 058 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.10714">arXiv:2206.10714</a> <span> [<a href="https://arxiv.org/pdf/2206.10714">pdf</a>, <a href="https://arxiv.org/format/2206.10714">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/10.1063/5.0101391">10.1063/5.0101391 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The `n2EDM MSR' -- a very large magnetically shielded room with an exceptional performance for fundamental physics measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Bouillaud%2C+T">T. Bouillaud</a>, <a href="/search/hep-ex?searchtype=author&query=Clement%2C+B">B. Clement</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Grujic%2C+Z+D">Z. D. Grujic</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/hep-ex?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/hep-ex?searchtype=author&query=Pais%2C+D">D. Pais</a>, <a href="/search/hep-ex?searchtype=author&query=Piegsa%2C+F+M">F. M. Piegsa</a> , et al. (19 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="2206.10714v1-abstract-short" style="display: inline;"> We present the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute which features an interior cubic volume with each side of length 2.92m, thus providing an accessible space of 25m3. The MSR has 87 openings up to 220mm diameter to operate the experimental apparatus inside, and an intermediate space between the layers for sensitive signal processing electronics.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.10714v1-abstract-full').style.display = 'inline'; document.getElementById('2206.10714v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.10714v1-abstract-full" style="display: none;"> We present the magnetically shielded room (MSR) for the n2EDM experiment at the Paul Scherrer Institute which features an interior cubic volume with each side of length 2.92m, thus providing an accessible space of 25m3. The MSR has 87 openings up to 220mm diameter to operate the experimental apparatus inside, and an intermediate space between the layers for sensitive signal processing electronics. The characterization measurements show a remanent magnetic field in the central 1m3 below 100pT, and a field below 600pT in the entire inner volume, up to 4\,cm to the walls. The quasi-static shielding factor at 0.01\,Hz measured with a sinusoidal 2muT peak-to-peak signal is about 100,000 in all three spatial directions and rises fast with frequency to reach 10^8 above 1Hz. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.10714v1-abstract-full').style.display = 'none'; document.getElementById('2206.10714v1-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 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 15 Figures, submitted to Review of Scientific Instruments</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.02794">arXiv:2111.02794</a> <span> [<a href="https://arxiv.org/pdf/2111.02794">pdf</a>, <a href="https://arxiv.org/format/2111.02794">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"> Improved search for neutron to mirror-neutron oscillations in the presence of mirror magnetic fields with a dedicated apparatus at the PSI UCN source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Berezhiani%2C+Z">Z. Berezhiani</a>, <a href="/search/hep-ex?searchtype=author&query=Biondi%2C+R">R. Biondi</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Dinani%2C+R+T">R. T. Dinani</a>, <a href="/search/hep-ex?searchtype=author&query=Doorenbos%2C+C+B">C. B. Doorenbos</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Kletzl%2C+V">V. Kletzl</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Pais%2C+D">D. Pais</a>, <a href="/search/hep-ex?searchtype=author&query=Rienaecker%2C+I">I. Rienaecker</a>, <a href="/search/hep-ex?searchtype=author&query=Ries%2C+D">D. Ries</a>, <a href="/search/hep-ex?searchtype=author&query=Rossi%2C+N">N. Rossi</a>, <a href="/search/hep-ex?searchtype=author&query=Rozpedzik%2C+D">D. Rozpedzik</a>, <a href="/search/hep-ex?searchtype=author&query=Schmidt-Wellenburg%2C+P">P. Schmidt-Wellenburg</a>, <a href="/search/hep-ex?searchtype=author&query=Tanaka%2C+K+S">K. S. Tanaka</a>, <a href="/search/hep-ex?searchtype=author&query=Zejma%2C+J">J. Zejma</a>, <a href="/search/hep-ex?searchtype=author&query=Ziehl%2C+N">N. Ziehl</a>, <a href="/search/hep-ex?searchtype=author&query=Zsigmond%2C+G">G. Zsigmond</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.02794v1-abstract-short" style="display: inline;"> While the international nEDM collaboration at the Paul Scherrer Institut (PSI) took data in 2017 that covered a considerable fraction of the parameter space of claimed potential signals of hypothetical neutron ($n$) to mirror-neutron ($n'$) transitions, it could not test all claimed signal regions at various mirror magnetic fields. Therefore, a new study of $n-n'$ oscillations using stored ultraco… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.02794v1-abstract-full').style.display = 'inline'; document.getElementById('2111.02794v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.02794v1-abstract-full" style="display: none;"> While the international nEDM collaboration at the Paul Scherrer Institut (PSI) took data in 2017 that covered a considerable fraction of the parameter space of claimed potential signals of hypothetical neutron ($n$) to mirror-neutron ($n'$) transitions, it could not test all claimed signal regions at various mirror magnetic fields. Therefore, a new study of $n-n'$ oscillations using stored ultracold neutrons (UCNs)is underway at PSI, considerably expanding the reach in parameter space of mirror magnetic fields ($B'$) and oscillation time constants ($蟿_{nn'}$). The new apparatus is designed to test for the anomalous loss of stored ultracold neutrons as a function of an applied magnetic field. The experiment is distinguished from its predecessors by its very large storage vessel (1.47\,m$^3$), enhancing its statistical sensitivity. In a test experiment in 2020 we have demonstrated the capabilities of our apparatus. However, the full analysis of our recent data is still pending. Based on already demonstrated performance, we will reach a sensitivity to oscillation times $蟿_{nn'}/\sqrt{\cos(尾)}$ well above hundred seconds, with $尾$ being the angle between $B'$ and the applied magnetic field $B$. The scan of $B$ will allow the finding or the comprehensive exclusion of potential signals reported in the analysis of previous experiments and suggested to be consistent with neutron to mirror-neutron oscillations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.02794v1-abstract-full').style.display = 'none'; document.getElementById('2111.02794v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2103.09039">arXiv:2103.09039</a> <span> [<a href="https://arxiv.org/pdf/2103.09039">pdf</a>, <a href="https://arxiv.org/format/2103.09039">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.106.032808">10.1103/PhysRevA.106.032808 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Mapping of the magnetic field to correct systematic effects in a neutron electric dipole moment experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Cl%C3%A9ment%2C+B">B. Cl茅ment</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Hayen%2C+L">L. Hayen</a>, <a href="/search/hep-ex?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/hep-ex?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Knowles%2C+P">P. Knowles</a>, <a href="/search/hep-ex?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</a> , et al. (28 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2103.09039v3-abstract-short" style="display: inline;"> Experiments dedicated to the measurement of the electric dipole moment of the neutron require outstanding control of the magnetic field uniformity. The neutron electric dipole moment (nEDM) experiment at the Paul Scherrer Institute uses a 199Hg co-magnetometer to precisely monitor magnetic field variations. This co-magnetometer, in the presence of field non-uniformity, is responsible for the large… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09039v3-abstract-full').style.display = 'inline'; document.getElementById('2103.09039v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2103.09039v3-abstract-full" style="display: none;"> Experiments dedicated to the measurement of the electric dipole moment of the neutron require outstanding control of the magnetic field uniformity. The neutron electric dipole moment (nEDM) experiment at the Paul Scherrer Institute uses a 199Hg co-magnetometer to precisely monitor magnetic field variations. This co-magnetometer, in the presence of field non-uniformity, is responsible for the largest systematic effect of this measurement. To evaluate and correct that effect, offline measurements of the field non-uniformity were performed during mapping campaigns in 2013, 2014 and 2017. We present the results of these campaigns, and the improvement the correction of this effect brings to the neutron electric dipole moment measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2103.09039v3-abstract-full').style.display = 'none'; document.getElementById('2103.09039v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.11966">arXiv:2001.11966</a> <span> [<a href="https://arxiv.org/pdf/2001.11966">pdf</a>, <a href="https://arxiv.org/format/2001.11966">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.124.081803">10.1103/PhysRevLett.124.081803 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the permanent electric dipole moment of the neutron </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Baker%2C+C+A">C. A. Baker</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Burghoff%2C+M">M. Burghoff</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Clement%2C+B">B. Clement</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/hep-ex?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/hep-ex?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/hep-ex?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=van+der+Grinten%2C+M">M. van der Grinten</a> , et al. (59 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2001.11966v1-abstract-short" style="display: inline;"> We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magnetic fields with ultracold neutrons (UCN). Our measurement stands in the long history of EDM experiments probing physics violating time reversal invariance. The salient features of this experiment were the use of a Hg-19… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.11966v1-abstract-full').style.display = 'inline'; document.getElementById('2001.11966v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.11966v1-abstract-full" style="display: none;"> We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magnetic fields with ultracold neutrons (UCN). Our measurement stands in the long history of EDM experiments probing physics violating time reversal invariance. The salient features of this experiment were the use of a Hg-199 co-magnetometer and an array of optically pumped cesium vapor magnetometers to cancel and correct for magnetic field changes. The statistical analysis was performed on blinded datasets by two separate groups while the estimation of systematic effects profited from an unprecedented knowledge of the magnetic field. The measured value of the neutron EDM is $d_{\rm n} = (0.0\pm1.1_{\rm stat}\pm0.2_{\rm sys})\times10^{-26}e\,{\rm cm}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.11966v1-abstract-full').style.display = 'none'; document.getElementById('2001.11966v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 4 figures, submitted to PRL on 18.12.2019</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 081803 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.09244">arXiv:1912.09244</a> <span> [<a href="https://arxiv.org/pdf/1912.09244">pdf</a>, <a href="https://arxiv.org/format/1912.09244">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Data Analysis, Statistics and Probability">physics.data-an</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epja/s10050-021-00456-1">10.1140/epja/s10050-021-00456-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Data blinding for the nEDM experiment at PSI </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C">C. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Gruji%C4%87%2C+Z">Z. Gruji膰</a>, <a href="/search/hep-ex?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/hep-ex?searchtype=author&query=Hommet%2C+J">J. Hommet</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/hep-ex?searchtype=author&query=Lemiere%2C+Y">Y. Lemiere</a>, <a href="/search/hep-ex?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/hep-ex?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/hep-ex?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</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="1912.09244v2-abstract-short" style="display: inline;"> Psychological bias towards, or away from, a prior measurement or a theory prediction is an intrinsic threat to any data analysis. While various methods can be used to avoid the bias, e.g. actively not looking at the result, only data blinding is a traceable and thus trustworthy method to circumvent the bias and to convince a public audience that there is not even an accidental psychological bias.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.09244v2-abstract-full').style.display = 'inline'; document.getElementById('1912.09244v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.09244v2-abstract-full" style="display: none;"> Psychological bias towards, or away from, a prior measurement or a theory prediction is an intrinsic threat to any data analysis. While various methods can be used to avoid the bias, e.g. actively not looking at the result, only data blinding is a traceable and thus trustworthy method to circumvent the bias and to convince a public audience that there is not even an accidental psychological bias. Data blinding is nowadays a standard practice in particle physics, but it is particularly difficult for experiments searching for the neutron electric dipole moment, as several cross measurements, in particular of the magnetic field, create a self-consistent network into which it is hard to inject a fake signal. We present an algorithm that modifies the data without influencing the experiment. Results of an automated analysis of the data are used to change the recorded spin state of a few neutrons of each measurement cycle. The flexible algorithm is applied twice to the data, to provide different data to various analysis teams. This gives us the option to sequentially apply various blinding offsets for separate analysis steps with independent teams. The subtle modification of the data allows us to modify the algorithm and to produce a re-blinded data set without revealing the blinding secret. The method was designed for the 2015/2016 measurement campaign of the nEDM experiment at the Paul Scherrer Institute. However, it can be re-used with minor modification for the follow-up experiment n2EDM, and may be suitable for comparable efforts. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.09244v2-abstract-full').style.display = 'none'; document.getElementById('1912.09244v2-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 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.04631">arXiv:1912.04631</a> <span> [<a href="https://arxiv.org/pdf/1912.04631">pdf</a>, <a href="https://arxiv.org/format/1912.04631">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.101.053419">10.1103/PhysRevA.101.053419 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Optically Pumped Cs Magnetometers Enabling a High-Sensitivity Search for the Neutron Electric Dipole Moment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/hep-ex?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/hep-ex?searchtype=author&query=Hayen%2C+L">L. Hayen</a>, <a href="/search/hep-ex?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/hep-ex?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/hep-ex?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/hep-ex?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Knowles%2C+P">P. Knowles</a> , et al. (35 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.04631v3-abstract-short" style="display: inline;"> An array of sixteen laser-pumped scalar Cs magnetometers was part of the neutron electric dipole moment (nEDM) experiment taking data at the Paul Scherrer Institute in 2015 and 2016. It was deployed to measure the gradients of the experiment's magnetic field and to monitor their temporal evolution. The originality of the array lies in its compact design, in which a single near-infrared diode laser… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.04631v3-abstract-full').style.display = 'inline'; document.getElementById('1912.04631v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.04631v3-abstract-full" style="display: none;"> An array of sixteen laser-pumped scalar Cs magnetometers was part of the neutron electric dipole moment (nEDM) experiment taking data at the Paul Scherrer Institute in 2015 and 2016. It was deployed to measure the gradients of the experiment's magnetic field and to monitor their temporal evolution. The originality of the array lies in its compact design, in which a single near-infrared diode laser drives all magnetometers that are located in a high-vacuum chamber, with a selection of the sensors mounted on a high-voltage electrode. We describe details of the Cs sensors' construction and modes of operation, emphasizing the accuracy and sensitivity of the magnetic field readout. We present two applications of the magnetometer array directly beneficial to the nEDM experiment: (i) the implementation of a strategy to correct for the drift of the vertical magnetic field gradient and (ii) a procedure to homogenize the magnetic field. The first reduces the uncertainty of the new nEDM result. The second enables transverse neutron spin relaxation times exceeding 1500 s, improving the statistical sensitivity of the nEDM experiment by about 35% and effectively increasing the rate of nEDM data taking by a factor of 1.8. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.04631v3-abstract-full').style.display = 'none'; document.getElementById('1912.04631v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. A 101, 053419 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1811.06085">arXiv:1811.06085</a> <span> [<a href="https://arxiv.org/pdf/1811.06085">pdf</a>, <a href="https://arxiv.org/format/1811.06085">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevA.99.042112">10.1103/PhysRevA.99.042112 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Magnetic field uniformity in neutron electric dipole moment experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N">N. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Baker%2C+T">T. Baker</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C">C. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Dechenaux%2C+B">B. Dechenaux</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/hep-ex?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=van+der+Grinten%2C+M">M. van der Grinten</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/hep-ex?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/hep-ex?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/hep-ex?searchtype=author&query=Ivanov%2C+S+N">S. N. Ivanov</a> , et al. (31 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1811.06085v2-abstract-short" style="display: inline;"> Magnetic field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of non-uniformities: depolarization of ultracold neutrons, and Larmor frequency shifts of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.06085v2-abstract-full').style.display = 'inline'; document.getElementById('1811.06085v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1811.06085v2-abstract-full" style="display: none;"> Magnetic field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of non-uniformities: depolarization of ultracold neutrons, and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber nEDM apparatus installed at the Paul Scherrer Institute. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.06085v2-abstract-full').style.display = 'none'; document.getElementById('1811.06085v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 13 November, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. A 99, 042112 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1811.02340">arXiv:1811.02340</a> <span> [<a href="https://arxiv.org/pdf/1811.02340">pdf</a>, <a href="https://arxiv.org/format/1811.02340">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/10.1051/epjconf/201921902002">10.1051/epjconf/201921902002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The n2EDM experiment at the Paul Scherrer Institute </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/hep-ex?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/hep-ex?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/hep-ex?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/hep-ex?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/hep-ex?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/hep-ex?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/hep-ex?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/hep-ex?searchtype=author&query=Clement%2C+B">B. Clement</a>, <a href="/search/hep-ex?searchtype=author&query=Crawford%2C+C">C. Crawford</a>, <a href="/search/hep-ex?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/hep-ex?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/hep-ex?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/hep-ex?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/hep-ex?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/hep-ex?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/hep-ex?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/hep-ex?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/hep-ex?searchtype=author&query=Koss%2C+P+A">P. A. Koss</a>, <a href="/search/hep-ex?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/hep-ex?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/hep-ex?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/hep-ex?searchtype=author&query=Lefort%2C+T">T. Lefort</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="1811.02340v2-abstract-short" style="display: inline;"> We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum using ultracold neutrons. n2EDM features a large UCN double storage chamber design with neutron transport adapted to the PSI UCN source. The design builds on experience gained from the previous apparatus operated at PSI… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.02340v2-abstract-full').style.display = 'inline'; document.getElementById('1811.02340v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1811.02340v2-abstract-full" style="display: none;"> We present the new spectrometer for the neutron electric dipole moment (nEDM) search at the Paul Scherrer Institute (PSI), called n2EDM. The setup is at room temperature in vacuum using ultracold neutrons. n2EDM features a large UCN double storage chamber design with neutron transport adapted to the PSI UCN source. The design builds on experience gained from the previous apparatus operated at PSI until 2017. An order of magnitude increase in sensitivity is calculated for the new baseline setup based on scalable results from the previous apparatus, and the UCN source performance achieved in 2016. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1811.02340v2-abstract-full').style.display = 'none'; document.getElementById('1811.02340v2-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 February, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 November, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">Submitted as a web of conference proceedings paper</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.00971">arXiv:1710.00971</a> <span> [<a href="https://arxiv.org/pdf/1710.00971">pdf</a>, <a href="https://arxiv.org/format/1710.00971">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </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.97.072002">10.1103/PhysRevD.97.072002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for vector mediator of Dark Matter production in invisible decay mode </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=NA64+Collaboration"> NA64 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+D">D. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Burtsev%2C+V+E">V. E. Burtsev</a>, <a href="/search/hep-ex?searchtype=author&query=Chumakov%2C+A+G">A. G. Chumakov</a>, <a href="/search/hep-ex?searchtype=author&query=Cooke%2C+D">D. Cooke</a>, <a href="/search/hep-ex?searchtype=author&query=Crivelli%2C+P">P. Crivelli</a>, <a href="/search/hep-ex?searchtype=author&query=Depero%2C+E">E. Depero</a>, <a href="/search/hep-ex?searchtype=author&query=Dermenev%2C+A+V">A. V. Dermenev</a>, <a href="/search/hep-ex?searchtype=author&query=Donskov%2C+S+V">S. V. Donskov</a>, <a href="/search/hep-ex?searchtype=author&query=Dubinin%2C+F">F. Dubinin</a>, <a href="/search/hep-ex?searchtype=author&query=Dusaev%2C+R+R">R. R. Dusaev</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fabich%2C+A">A. Fabich</a>, <a href="/search/hep-ex?searchtype=author&query=Frolov%2C+V+N">V. N. Frolov</a>, <a href="/search/hep-ex?searchtype=author&query=Gardikiotis%2C+A">A. Gardikiotis</a>, <a href="/search/hep-ex?searchtype=author&query=Gerassimov%2C+S+G">S. G. Gerassimov</a>, <a href="/search/hep-ex?searchtype=author&query=Gninenko%2C+S+N">S. N. Gninenko</a>, <a href="/search/hep-ex?searchtype=author&query=Hosgen%2C+M">M. Hosgen</a>, <a href="/search/hep-ex?searchtype=author&query=Karneyeu%2C+A+E">A. E. Karneyeu</a>, <a href="/search/hep-ex?searchtype=author&query=Ketzer%2C+B">B. Ketzer</a>, <a href="/search/hep-ex?searchtype=author&query=Kirpichnikov%2C+D+V">D. V. Kirpichnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Kirsanov%2C+M+M">M. M. Kirsanov</a>, <a href="/search/hep-ex?searchtype=author&query=Konorov%2C+I+V">I. V. Konorov</a>, <a href="/search/hep-ex?searchtype=author&query=Kovalenko%2C+S+G">S. G. Kovalenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kramarenko%2C+V+A">V. A. Kramarenko</a> , et al. (19 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.00971v2-abstract-short" style="display: inline;"> A search is performed for a new sub-GeV vector boson ($A'$) mediated production of Dark Matter ($蠂$) in the fixed-target experiment, NA64, at the CERN SPS. The $A'$, called dark photon, could be generated in the reaction $ e^- Z \to e^- Z A'$ of 100 GeV electrons dumped against an active target which is followed by the prompt invisible decay $A' \to 蠂\overline蠂$. The experimental signature of this… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.00971v2-abstract-full').style.display = 'inline'; document.getElementById('1710.00971v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.00971v2-abstract-full" style="display: none;"> A search is performed for a new sub-GeV vector boson ($A'$) mediated production of Dark Matter ($蠂$) in the fixed-target experiment, NA64, at the CERN SPS. The $A'$, called dark photon, could be generated in the reaction $ e^- Z \to e^- Z A'$ of 100 GeV electrons dumped against an active target which is followed by the prompt invisible decay $A' \to 蠂\overline蠂$. The experimental signature of this process would be an event with an isolated electron and large missing energy in the detector. From the analysis of the data sample collected in 2016 corresponding to $4.3\times10^{10}$ electrons on target no evidence of such a process has been found. New stringent constraints on the $A'$ mixing strength with photons, $10^{-5}\lesssim 蔚\lesssim 10^{-2}$, for the $A'$ mass range $m_{A'} \lesssim 1$ GeV are derived. For models considering scalar and fermionic thermal Dark Matter interacting with the visible sector through the vector portal the 90% C.L. limits $10^{-11}\lesssim y \lesssim 10^{-6}$ on the dark-matter parameter $y = 蔚^2 伪_D (\frac{m_蠂}{m_{A'}})^4 $ are obtained for the dark coupling constant $伪_D = 0.5$ and dark-matter masses $0.001 \lesssim m_蠂\lesssim 0.5 $ GeV. The lower limits $伪_D \gtrsim 10^{-3} $ for pseudo-Dirac Dark Matter in the mass region $m_蠂\lesssim 0.05 $ GeV are more stringent than the corresponding bounds from beam dump experiments. The results are obtained by using tree level, exact calculations of the $A'$ production cross-sections, which turn out to be significantly smaller compared to the one obtained in the Weizs盲cker-Williams approximation for the mass region $m_{A'} \gtrsim 0.1$ GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.00971v2-abstract-full').style.display = 'none'; document.getElementById('1710.00971v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 17 figures, version accepted for publication in PRD</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 97, 072002 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1708.04087">arXiv:1708.04087</a> <span> [<a href="https://arxiv.org/pdf/1708.04087">pdf</a>, <a href="https://arxiv.org/format/1708.04087">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2017.10.067">10.1016/j.nima.2017.10.067 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of Multiplexed XY Resistive Micromegas detectors in a high intensity beam </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+D">D. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Burtsev%2C+V">V. Burtsev</a>, <a href="/search/hep-ex?searchtype=author&query=Chumakov%2C+A">A. Chumakov</a>, <a href="/search/hep-ex?searchtype=author&query=Cooke%2C+D">D. Cooke</a>, <a href="/search/hep-ex?searchtype=author&query=Depero%2C+E">E. Depero</a>, <a href="/search/hep-ex?searchtype=author&query=Dermenev%2C+A+V">A. V. Dermenev</a>, <a href="/search/hep-ex?searchtype=author&query=Donskov%2C+S+V">S. V. Donskov</a>, <a href="/search/hep-ex?searchtype=author&query=Dubinin%2C+F">F. Dubinin</a>, <a href="/search/hep-ex?searchtype=author&query=Dusaev%2C+R+R">R. R. Dusaev</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fabich%2C+A">A. Fabich</a>, <a href="/search/hep-ex?searchtype=author&query=Frolov%2C+V+N">V. N. Frolov</a>, <a href="/search/hep-ex?searchtype=author&query=Gardikiotis%2C+A">A. Gardikiotis</a>, <a href="/search/hep-ex?searchtype=author&query=Gninenko%2C+S+N">S. N. Gninenko</a>, <a href="/search/hep-ex?searchtype=author&query=H%C3%B6sgen%2C+M">M. H枚sgen</a>, <a href="/search/hep-ex?searchtype=author&query=Karneyeu%2C+A+E">A. E. Karneyeu</a>, <a href="/search/hep-ex?searchtype=author&query=Ketzer%2C+B">B. Ketzer</a>, <a href="/search/hep-ex?searchtype=author&query=Kirsanov%2C+M+M">M. M. Kirsanov</a>, <a href="/search/hep-ex?searchtype=author&query=Konorov%2C+I+V">I. V. Konorov</a>, <a href="/search/hep-ex?searchtype=author&query=Kramarenko%2C+V+A">V. A. Kramarenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kuleshov%2C+S+V">S. V. Kuleshov</a>, <a href="/search/hep-ex?searchtype=author&query=Levchenko%2C+E">E. Levchenko</a>, <a href="/search/hep-ex?searchtype=author&query=Lyubovitskij%2C+V+E">V. E. Lyubovitskij</a>, <a href="/search/hep-ex?searchtype=author&query=Lysan%2C+V">V. Lysan</a>, <a href="/search/hep-ex?searchtype=author&query=Mamon%2C+S">S. Mamon</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1708.04087v1-abstract-short" style="display: inline;"> We present the performance of multiplexed XY resistive Micromegas detectors tested in the CERN SPS 100 GeV/c electron beam at intensities up to 3.3 $\times$ 10$^5$ e$^- $/(s$\cdot$cm$^2$). So far, all studies with multiplexed Micromegas have only been reported for tests with radioactive sources and cosmic rays. The use of multiplexed modules in high intensity environments was not explored due to t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.04087v1-abstract-full').style.display = 'inline'; document.getElementById('1708.04087v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1708.04087v1-abstract-full" style="display: none;"> We present the performance of multiplexed XY resistive Micromegas detectors tested in the CERN SPS 100 GeV/c electron beam at intensities up to 3.3 $\times$ 10$^5$ e$^- $/(s$\cdot$cm$^2$). So far, all studies with multiplexed Micromegas have only been reported for tests with radioactive sources and cosmic rays. The use of multiplexed modules in high intensity environments was not explored due to the effect of ambiguities in the reconstruction of the hit point caused by the multiplexing feature. At the beam intensities analysed in this work and with a multiplexing factor of 5, more than 50% level of ambiguity is introduced. Our results prove that by using the additional information of cluster size and integrated charge from the signal clusters induced on the XY strips, the ambiguities can be reduced to a level below 2%. The tested detectors are used in the CERN NA64 experiment for tracking the incoming particles bending in a magnetic field in order to reconstruct their momentum. The average hit detection efficiency of each module was found to be $\sim$ 96% at the highest beam intensities. By using four modules a tracking resolution of 1.1% was obtained with $\sim$ 85% combined tracking efficiency. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1708.04087v1-abstract-full').style.display = 'none'; document.getElementById('1708.04087v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 August, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2017. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1703.05993">arXiv:1703.05993</a> <span> [<a href="https://arxiv.org/pdf/1703.05993">pdf</a>, <a href="https://arxiv.org/format/1703.05993">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2017.05.028">10.1016/j.nima.2017.05.028 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High purity 100 GeV electron identification with synchrotron radiation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=Depero%2C+E">E. Depero</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+D">D. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Burtsev%2C+V">V. Burtsev</a>, <a href="/search/hep-ex?searchtype=author&query=Chumakov%2C+A">A. Chumakov</a>, <a href="/search/hep-ex?searchtype=author&query=Cooke%2C+D">D. Cooke</a>, <a href="/search/hep-ex?searchtype=author&query=Dermenev%2C+A+V">A. V. Dermenev</a>, <a href="/search/hep-ex?searchtype=author&query=Donskov%2C+S+V">S. V. Donskov</a>, <a href="/search/hep-ex?searchtype=author&query=Dubinin%2C+F">F. Dubinin</a>, <a href="/search/hep-ex?searchtype=author&query=Dusaev%2C+R+R">R. R. Dusaev</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fabich%2C+A">A. Fabich</a>, <a href="/search/hep-ex?searchtype=author&query=Frolov%2C+V+N">V. N. Frolov</a>, <a href="/search/hep-ex?searchtype=author&query=Gardikiotis%2C+A">A. Gardikiotis</a>, <a href="/search/hep-ex?searchtype=author&query=Gninenko%2C+S+N">S. N. Gninenko</a>, <a href="/search/hep-ex?searchtype=author&query=H%C3%B6sgen%2C+M">M. H枚sgen</a>, <a href="/search/hep-ex?searchtype=author&query=Karneyeu%2C+A+E">A. E. Karneyeu</a>, <a href="/search/hep-ex?searchtype=author&query=Ketzer%2C+B">B. Ketzer</a>, <a href="/search/hep-ex?searchtype=author&query=Kirsanov%2C+M+M">M. M. Kirsanov</a>, <a href="/search/hep-ex?searchtype=author&query=Konorov%2C+I+V">I. V. Konorov</a>, <a href="/search/hep-ex?searchtype=author&query=Kramarenko%2C+V+A">V. A. Kramarenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kuleshov%2C+S+V">S. V. Kuleshov</a>, <a href="/search/hep-ex?searchtype=author&query=Lyubovitskij%2C+V+E">V. E. Lyubovitskij</a>, <a href="/search/hep-ex?searchtype=author&query=Lysan%2C+V">V. Lysan</a>, <a href="/search/hep-ex?searchtype=author&query=Matveev%2C+V+A">V. A. Matveev</a>, <a href="/search/hep-ex?searchtype=author&query=Mikhailov%2C+Y+V">Yu. V. Mikhailov</a> , et al. (14 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="1703.05993v1-abstract-short" style="display: inline;"> In high energy experiments such as active beam dump searches for rare decays and missing energy events, the beam purity is a crucial parameter. In this paper we present a technique to reject heavy charged particle contamination in the 100 GeV electron beam of the H4 beam line at CERN SPS. The method is based on the detection with BGO scintillators of the synchrotron radiation emitted by the electr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.05993v1-abstract-full').style.display = 'inline'; document.getElementById('1703.05993v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1703.05993v1-abstract-full" style="display: none;"> In high energy experiments such as active beam dump searches for rare decays and missing energy events, the beam purity is a crucial parameter. In this paper we present a technique to reject heavy charged particle contamination in the 100 GeV electron beam of the H4 beam line at CERN SPS. The method is based on the detection with BGO scintillators of the synchrotron radiation emitted by the electrons passing through a bending dipole magnet. A 100 GeV $蟺^-$ beam is used to test the method in the NA64 experiment resulting in a suppression factor of $10^{-5}$ while the efficiency for electron detection is $\sim$95%. The spectra and the rejection factors are in very good agreement with the Monte Carlo simulation. The reported suppression factors are significantly better than previously achieved. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1703.05993v1-abstract-full').style.display = 'none'; document.getElementById('1703.05993v1-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 March, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.02988">arXiv:1610.02988</a> <span> [<a href="https://arxiv.org/pdf/1610.02988">pdf</a>, <a href="https://arxiv.org/format/1610.02988">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </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.118.011802">10.1103/PhysRevLett.118.011802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for invisible decays of sub-GeV dark photons in missing-energy events at the CERN SPS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ex?searchtype=author&query=NA64+Collaboration"> NA64 Collaboration</a>, <a href="/search/hep-ex?searchtype=author&query=Banerjee%2C+D">D. Banerjee</a>, <a href="/search/hep-ex?searchtype=author&query=Burtsev%2C+V">V. Burtsev</a>, <a href="/search/hep-ex?searchtype=author&query=Cooke%2C+D">D. Cooke</a>, <a href="/search/hep-ex?searchtype=author&query=Crivelli%2C+P">P. Crivelli</a>, <a href="/search/hep-ex?searchtype=author&query=Depero%2C+E">E. Depero</a>, <a href="/search/hep-ex?searchtype=author&query=Dermenev%2C+A+V">A. V. Dermenev</a>, <a href="/search/hep-ex?searchtype=author&query=Donskov%2C+S+V">S. V. Donskov</a>, <a href="/search/hep-ex?searchtype=author&query=Dubinin%2C+F">F. Dubinin</a>, <a href="/search/hep-ex?searchtype=author&query=Dusaev%2C+R+R">R. R. Dusaev</a>, <a href="/search/hep-ex?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/hep-ex?searchtype=author&query=Fabich%2C+A">A. Fabich</a>, <a href="/search/hep-ex?searchtype=author&query=Frolov%2C+V+N">V. N. Frolov</a>, <a href="/search/hep-ex?searchtype=author&query=Gardikiotis%2C+A">A. Gardikiotis</a>, <a href="/search/hep-ex?searchtype=author&query=Gninenko%2C+S+N">S. N. Gninenko</a>, <a href="/search/hep-ex?searchtype=author&query=Hosgen%2C+M">M. Hosgen</a>, <a href="/search/hep-ex?searchtype=author&query=Kachanov%2C+V+A">V. A. Kachanov</a>, <a href="/search/hep-ex?searchtype=author&query=Karneyeu%2C+A+E">A. E. Karneyeu</a>, <a href="/search/hep-ex?searchtype=author&query=Ketzer%2C+B">B. Ketzer</a>, <a href="/search/hep-ex?searchtype=author&query=Kirpichnikov%2C+D+V">D. V. Kirpichnikov</a>, <a href="/search/hep-ex?searchtype=author&query=Kirsanov%2C+M+M">M. M. Kirsanov</a>, <a href="/search/hep-ex?searchtype=author&query=Kovalenko%2C+S+G">S. G. Kovalenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kramarenko%2C+V+A">V. A. Kramarenko</a>, <a href="/search/hep-ex?searchtype=author&query=Kravchuk%2C+L+V">L. V. Kravchuk</a>, <a href="/search/hep-ex?searchtype=author&query=Krasnikov%2C+N+V">N. V. Krasnikov</a> , et al. (22 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1610.02988v2-abstract-short" style="display: inline;"> We report on a direct search for sub-GeV dark photons (A') which might be produced in the reaction e^- Z \to e^- Z A' via kinetic mixing with photons by 100 GeV electrons incident on an active target in the NA64 experiment at the CERN SPS. The A's would decay invisibly into dark matter particles resulting in events with large missing energy. No evidence for such decays was found with 2.75\cdot 10^… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02988v2-abstract-full').style.display = 'inline'; document.getElementById('1610.02988v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.02988v2-abstract-full" style="display: none;"> We report on a direct search for sub-GeV dark photons (A') which might be produced in the reaction e^- Z \to e^- Z A' via kinetic mixing with photons by 100 GeV electrons incident on an active target in the NA64 experiment at the CERN SPS. The A's would decay invisibly into dark matter particles resulting in events with large missing energy. No evidence for such decays was found with 2.75\cdot 10^{9} electrons on target. We set new limits on the 纬-A' mixing strength and exclude the invisible A' with a mass < 100 MeV as an explanation of the muon g_渭-2 anomaly. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02988v2-abstract-full').style.display = 'none'; document.getElementById('1610.02988v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">6 pages, 3 figures; Typos corrected, references added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 118, 011802 (2017) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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