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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/2305.11679">arXiv:2305.11679</a> <span> [<a href="https://arxiv.org/pdf/2305.11679">pdf</a>, <a href="https://arxiv.org/format/2305.11679">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="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> The helion charge radius from laser spectroscopy of muonic helium-3 ions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=The+CREMA+Collaboration"> The CREMA Collaboration</a>, <a href="/search/physics?searchtype=author&query=Schuhmann%2C+K">Karsten Schuhmann</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+L+M+P">Luis M. P. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Nez%2C+F">Fran莽ois Nez</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+M+A">Marwan Abdou Ahmed</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">Fernando D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+P">Pedro Amaro</a>, <a href="/search/physics?searchtype=author&query=Biraben%2C+F">Fran莽ois Biraben</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+T">Tzu-Ling Chen</a>, <a href="/search/physics?searchtype=author&query=Covita%2C+D+S">Daniel S. Covita</a>, <a href="/search/physics?searchtype=author&query=Dax%2C+A+J">Andreas J. Dax</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Galtier%2C+S">Sandrine Galtier</a>, <a href="/search/physics?searchtype=author&query=Gouvea%2C+A+L">Andrea L. Gouvea</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6tzfried%2C+J">Johannes G枚tzfried</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+T">Thomas Graf</a>, <a href="/search/physics?searchtype=author&query=H%C3%A4nsch%2C+T+W">Theodor W. H盲nsch</a>, <a href="/search/physics?searchtype=author&query=Hildebrandt%2C+M">Malte Hildebrandt</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/physics?searchtype=author&query=Julien%2C+L">Lucile Julien</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">Klaus Kirch</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">Andreas Knecht</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a> , et al. (15 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.11679v2-abstract-short" style="display: inline;"> Hydrogen-like light muonic ions, in which one negative muon replaces all the electrons, are extremely sensitive probes of nuclear structure, because the large muon mass increases tremendously the wave function overlap with the nucleus. Using pulsed laser spectroscopy we have measured three 2S-2P transitions in the muonic helium-3 ion ($渭^3$He$^+$), an ion formed by a negative muon and bare helium-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11679v2-abstract-full').style.display = 'inline'; document.getElementById('2305.11679v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.11679v2-abstract-full" style="display: none;"> Hydrogen-like light muonic ions, in which one negative muon replaces all the electrons, are extremely sensitive probes of nuclear structure, because the large muon mass increases tremendously the wave function overlap with the nucleus. Using pulsed laser spectroscopy we have measured three 2S-2P transitions in the muonic helium-3 ion ($渭^3$He$^+$), an ion formed by a negative muon and bare helium-3 nucleus. This allowed us to extract the Lamb shift $E(2P_{1/2}-2S_{1/2})= 1258.598(48)^{\rm exp}(3)^{\rm theo}$ meV, the 2P fine structure splitting $E_{\rm FS}^{\rm exp} = 144.958(114)$ meV, and the 2S-hyperfine splitting (HFS) $E_{\rm HFS}^{\rm exp} = -166.495(104)^{\rm exp}(3)^{\rm theo}$ meV in $渭^3$He$^+$. Comparing these measurements to theory we determine the rms charge radius of the helion ($^3$He nucleus) to be $r_h$ = 1.97007(94) fm. This radius represents a benchmark for few nucleon theories and opens the way for precision tests in $^3$He atoms and $^3$He-ions. This radius is in good agreement with the value from elastic electron scattering, but a factor 15 more accurate. Combining our Lamb shift measurement with our earlier one in $渭^4$He$^+$ we obtain $r_h^2-r_伪^2 = 1.0636(6)^{\rm exp}(30)^{\rm theo}$ fm$^2$ to be compared to results from the isotope shift measurements in regular He atoms, which are however affected by long-standing tensions. By comparing $E_{\rm HFS}^{\rm exp}$ with theory we also obtain the two-photon-exchange contribution (including higher orders) which is another important benchmark for ab-initio few-nucleon theories aiming at understanding the magnetic and current structure of light nuclei. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.11679v2-abstract-full').style.display = 'none'; document.getElementById('2305.11679v2-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 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">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/2207.09880">arXiv:2207.09880</a> <span> [<a href="https://arxiv.org/pdf/2207.09880">pdf</a>, <a href="https://arxiv.org/ps/2207.09880">ps</a>, <a href="https://arxiv.org/format/2207.09880">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div 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/10.7566/JPSCP.37.020701">10.7566/JPSCP.37.020701 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Precision nEDM Measurement with UltraCold Neutrons at TRIUMF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Matsumiya%2C+R">Ryohei Matsumiya</a>, <a href="/search/physics?searchtype=author&query=Akatsuka%2C+H">Hiroaki Akatsuka</a>, <a href="/search/physics?searchtype=author&query=Bidinosti%2C+C+P">Chris P. Bidinosti</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+C+A">Charles A. Davis</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Fujimoto%2C+D">Derek Fujimoto</a>, <a href="/search/physics?searchtype=author&query=Gericke%2C+M+T+W">Michael T. W. Gericke</a>, <a href="/search/physics?searchtype=author&query=Giampa%2C+P">Pietro Giampa</a>, <a href="/search/physics?searchtype=author&query=Golub%2C+R">Robert Golub</a>, <a href="/search/physics?searchtype=author&query=Hansen-Romu%2C+S">Sean Hansen-Romu</a>, <a href="/search/physics?searchtype=author&query=Hatanaka%2C+K">Kichiji Hatanaka</a>, <a href="/search/physics?searchtype=author&query=Hayamizu%2C+T">Tomohiro Hayamizu</a>, <a href="/search/physics?searchtype=author&query=Higuchi%2C+T">Takashi Higuchi</a>, <a href="/search/physics?searchtype=author&query=Ichikawa%2C+G">Go Ichikawa</a>, <a href="/search/physics?searchtype=author&query=Imajo%2C+S">Sohei Imajo</a>, <a href="/search/physics?searchtype=author&query=Jamieson%2C+B">Blair Jamieson</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+S">Shinsuke Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kitaguchi%2C+M">Masaaki Kitaguchi</a>, <a href="/search/physics?searchtype=author&query=Klassen%2C+W">Wolfgang Klassen</a>, <a href="/search/physics?searchtype=author&query=Klemets%2C+E">Emma Klemets</a>, <a href="/search/physics?searchtype=author&query=Konaka%2C+A">Akira Konaka</a>, <a href="/search/physics?searchtype=author&query=Korkmaz%2C+E">Elie Korkmaz</a>, <a href="/search/physics?searchtype=author&query=Korobkina%2C+E">Ekaterina Korobkina</a>, <a href="/search/physics?searchtype=author&query=Kuchler%2C+F">Florian Kuchler</a>, <a href="/search/physics?searchtype=author&query=Lavvaf%2C+M">Maedeh Lavvaf</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="2207.09880v1-abstract-short" style="display: inline;"> The TRIUMF Ultra-Cold Advanced Neutron (TUCAN) collaboration aims at a precision neutron electric dipole moment (nEDM) measurement with an uncertainty of $10^{-27}\,e\cdot\mathrm{cm}$, which is an order-of-magnitude better than the current nEDM upper limit and enables us to test Supersymmetry. To achieve this precision, we are developing a new high-intensity ultracold neutron (UCN) source using su… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.09880v1-abstract-full').style.display = 'inline'; document.getElementById('2207.09880v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2207.09880v1-abstract-full" style="display: none;"> The TRIUMF Ultra-Cold Advanced Neutron (TUCAN) collaboration aims at a precision neutron electric dipole moment (nEDM) measurement with an uncertainty of $10^{-27}\,e\cdot\mathrm{cm}$, which is an order-of-magnitude better than the current nEDM upper limit and enables us to test Supersymmetry. To achieve this precision, we are developing a new high-intensity ultracold neutron (UCN) source using super-thermal UCN production in superfluid helium (He-II) and a nEDM spectrometer. The current development status of them is reported in this article. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2207.09880v1-abstract-full').style.display = 'none'; document.getElementById('2207.09880v1-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 July, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Proceedings of the 24th International Spin Symposium (SPIN 2021), 18-22 October 2021, Matsue, Japan</span> </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/physics?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+C+A">C. A. Baker</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/physics?searchtype=author&query=Burghoff%2C+M">M. Burghoff</a>, <a href="/search/physics?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/physics?searchtype=author&query=Clement%2C+B">B. Clement</a>, <a href="/search/physics?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/physics?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Flaux%2C+P">P. Flaux</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Fratangelo%2C+A">A. Fratangelo</a>, <a href="/search/physics?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/physics?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/physics?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/physics?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/1912.04631">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/physics?searchtype=author&query=Abel%2C+C">C. Abel</a>, <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Bondar%2C+V">V. Bondar</a>, <a href="/search/physics?searchtype=author&query=Chanel%2C+E">E. Chanel</a>, <a href="/search/physics?searchtype=author&query=Chiu%2C+P+-">P. -J. Chiu</a>, <a href="/search/physics?searchtype=author&query=Crawford%2C+C+B">C. B. Crawford</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Emmenegger%2C+S">S. Emmenegger</a>, <a href="/search/physics?searchtype=author&query=Ferraris-Bouchez%2C+L">L. Ferraris-Bouchez</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/physics?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/physics?searchtype=author&query=Hayen%2C+L">L. Hayen</a>, <a href="/search/physics?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/physics?searchtype=author&query=Hild%2C+N">N. Hild</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?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/1905.08857">arXiv:1905.08857</a> <span> [<a href="https://arxiv.org/pdf/1905.08857">pdf</a>, <a href="https://arxiv.org/format/1905.08857">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Accelerator Physics">physics.acc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <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/PhysRevAccelBeams.22.102401">10.1103/PhysRevAccelBeams.22.102401 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A fast-switching magnet serving a spallation-driven ultracold neutron source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Altiere%2C+E">E. Altiere</a>, <a href="/search/physics?searchtype=author&query=Andalib%2C+T">T. Andalib</a>, <a href="/search/physics?searchtype=author&query=Barnes%2C+M+J">M. J. Barnes</a>, <a href="/search/physics?searchtype=author&query=Bell%2C+B">B. Bell</a>, <a href="/search/physics?searchtype=author&query=Bidinosti%2C+C+P">C. P. Bidinosti</a>, <a href="/search/physics?searchtype=author&query=Bylinsky%2C+Y">Y. Bylinsky</a>, <a href="/search/physics?searchtype=author&query=Chak%2C+J">J. Chak</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+C+A">C. A. Davis</a>, <a href="/search/physics?searchtype=author&query=Fischer%2C+F">F. Fischer</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Gericke%2C+M+T+W">M. T. W. Gericke</a>, <a href="/search/physics?searchtype=author&query=Giampa%2C+P">P. Giampa</a>, <a href="/search/physics?searchtype=author&query=Hahn%2C+M">M. Hahn</a>, <a href="/search/physics?searchtype=author&query=Hansen-Romu%2C+S">S. Hansen-Romu</a>, <a href="/search/physics?searchtype=author&query=Hatanaka%2C+K">K. Hatanaka</a>, <a href="/search/physics?searchtype=author&query=Hayamizu%2C+T">T. Hayamizu</a>, <a href="/search/physics?searchtype=author&query=Jamieson%2C+B">B. Jamieson</a>, <a href="/search/physics?searchtype=author&query=Jones%2C+D">D. Jones</a>, <a href="/search/physics?searchtype=author&query=Katsika%2C+K">K. Katsika</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+S">S. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kikawa%2C+T">T. Kikawa</a>, <a href="/search/physics?searchtype=author&query=Klassen%2C+W">W. Klassen</a>, <a href="/search/physics?searchtype=author&query=Konaka%2C+A">A. Konaka</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="1905.08857v2-abstract-short" style="display: inline;"> A fast-switching, high-repetition-rate magnet and power supply have been developed for and operated at TRIUMF, to deliver a proton beam to the new ultracold neutron (UCN) facility. The facility possesses unique operational requirements: a time-averaged beam current of 40~$渭$A with the ability to switch the beam on or off for several minutes. These requirements are in conflict with the typical oper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.08857v2-abstract-full').style.display = 'inline'; document.getElementById('1905.08857v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.08857v2-abstract-full" style="display: none;"> A fast-switching, high-repetition-rate magnet and power supply have been developed for and operated at TRIUMF, to deliver a proton beam to the new ultracold neutron (UCN) facility. The facility possesses unique operational requirements: a time-averaged beam current of 40~$渭$A with the ability to switch the beam on or off for several minutes. These requirements are in conflict with the typical operation mode of the TRIUMF cyclotron which delivers nearly continuous beam to multiple users. To enable the creation of the UCN facility, a beam-sharing arrangement with another facility was made. The beam sharing is accomplished by the fast-switching (kicker) magnet which is ramped in 50~$渭$s to a current of 193~A, held there for approximately 1~ms, then ramped down in the same short period of time. This achieves a 12~mrad deflection which is sufficient to switch the proton beam between the two facilities. The kicker magnet relies on a high-current, low-inductance coil connected to a fast-switching power supply that is based on insulated-gate bipolar transistors (IGBTs). The design and performance of the kicker magnet system and initial beam delivery results are reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.08857v2-abstract-full').style.display = 'none'; document.getElementById('1905.08857v2-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 August, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 21 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.01001">arXiv:1810.01001</a> <span> [<a href="https://arxiv.org/pdf/1810.01001">pdf</a>, <a href="https://arxiv.org/format/1810.01001">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> </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.2019.01.074">10.1016/j.nima.2019.01.074 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A beamline for fundamental neutron physics at TRIUMF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Andalib%2C+T">T. Andalib</a>, <a href="/search/physics?searchtype=author&query=Barnes%2C+M+J">M. J. Barnes</a>, <a href="/search/physics?searchtype=author&query=Bidinosti%2C+C+B">C. B. Bidinosti</a>, <a href="/search/physics?searchtype=author&query=Bylinsky%2C+Y">Y. Bylinsky</a>, <a href="/search/physics?searchtype=author&query=Chak%2C+J">J. Chak</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+C+A">C. A. Davis</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Gericke%2C+M+T+W">M. T. W. Gericke</a>, <a href="/search/physics?searchtype=author&query=Giampa%2C+P">P. Giampa</a>, <a href="/search/physics?searchtype=author&query=Hahn%2C+M">M. Hahn</a>, <a href="/search/physics?searchtype=author&query=Hansen-Romu%2C+S">S. Hansen-Romu</a>, <a href="/search/physics?searchtype=author&query=Hatanaka%2C+K">K. Hatanaka</a>, <a href="/search/physics?searchtype=author&query=Jamieson%2C+B">B. Jamieson</a>, <a href="/search/physics?searchtype=author&query=Jones%2C+D">D. Jones</a>, <a href="/search/physics?searchtype=author&query=Katsika%2C+K">K. Katsika</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+S">S. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Klassen%2C+W">W. Klassen</a>, <a href="/search/physics?searchtype=author&query=Konaka%2C+A">A. Konaka</a>, <a href="/search/physics?searchtype=author&query=Korkmaz%2C+E">E. Korkmaz</a>, <a href="/search/physics?searchtype=author&query=Kuchler%2C+F">F. Kuchler</a>, <a href="/search/physics?searchtype=author&query=Kurchaninov%2C+L">L. Kurchaninov</a>, <a href="/search/physics?searchtype=author&query=Lang%2C+M">M. Lang</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+L">L. Lee</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="1810.01001v2-abstract-short" style="display: inline;"> This article describes the new primary proton beamline 1U at TRIUMF. The purpose of this beamline is to produce ultracold neutrons (UCN) for fundamental-physics experiments. It delivers up to 40 microA of 480 MeV protons from the TRIUMF cyclotron to a tungsten spallation target and uses a fast kicker to share the beam between the Center for Molecular and Materials Science and UCN. The beamline has… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.01001v2-abstract-full').style.display = 'inline'; document.getElementById('1810.01001v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.01001v2-abstract-full" style="display: none;"> This article describes the new primary proton beamline 1U at TRIUMF. The purpose of this beamline is to produce ultracold neutrons (UCN) for fundamental-physics experiments. It delivers up to 40 microA of 480 MeV protons from the TRIUMF cyclotron to a tungsten spallation target and uses a fast kicker to share the beam between the Center for Molecular and Materials Science and UCN. The beamline has been successfully commissioned and operated with a beam current up to 10 microA, facilitating first large-scale UCN production in Canada. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.01001v2-abstract-full').style.display = 'none'; document.getElementById('1810.01001v2-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 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.04071">arXiv:1809.04071</a> <span> [<a href="https://arxiv.org/pdf/1809.04071">pdf</a>, <a href="https://arxiv.org/format/1809.04071">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevC.99.025503">10.1103/PhysRevC.99.025503 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First ultracold neutrons produced at TRIUMF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ahmed%2C+S">S. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Altiere%2C+E">E. Altiere</a>, <a href="/search/physics?searchtype=author&query=Andalib%2C+T">T. Andalib</a>, <a href="/search/physics?searchtype=author&query=Bell%2C+B">B. Bell</a>, <a href="/search/physics?searchtype=author&query=Bidinosti%2C+C+P">C. P. Bidinosti</a>, <a href="/search/physics?searchtype=author&query=Cudmore%2C+E">E. Cudmore</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Davis%2C+C+A">C. A. Davis</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Gericke%2C+M">M. Gericke</a>, <a href="/search/physics?searchtype=author&query=Giampa%2C+P">P. Giampa</a>, <a href="/search/physics?searchtype=author&query=Gnyp%2C+P">P. Gnyp</a>, <a href="/search/physics?searchtype=author&query=Hansen-Romu%2C+S">S. Hansen-Romu</a>, <a href="/search/physics?searchtype=author&query=Hatanaka%2C+K">K. Hatanaka</a>, <a href="/search/physics?searchtype=author&query=Hayamizu%2C+T">T. Hayamizu</a>, <a href="/search/physics?searchtype=author&query=Jamieson%2C+B">B. Jamieson</a>, <a href="/search/physics?searchtype=author&query=Jones%2C+D">D. Jones</a>, <a href="/search/physics?searchtype=author&query=Kawasaki%2C+S">S. Kawasaki</a>, <a href="/search/physics?searchtype=author&query=Kikawa%2C+T">T. Kikawa</a>, <a href="/search/physics?searchtype=author&query=Kitaguchi%2C+M">M. Kitaguchi</a>, <a href="/search/physics?searchtype=author&query=Klassen%2C+W">W. Klassen</a>, <a href="/search/physics?searchtype=author&query=Konaka%2C+A">A. Konaka</a>, <a href="/search/physics?searchtype=author&query=Korkmaz%2C+E">E. Korkmaz</a>, <a href="/search/physics?searchtype=author&query=Kuchler%2C+F">F. Kuchler</a>, <a href="/search/physics?searchtype=author&query=Lang%2C+M">M. Lang</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="1809.04071v3-abstract-short" style="display: inline;"> We installed a source for ultracold neutrons at a new, dedicated spallation target at TRIUMF. The source was originally developed in Japan and uses a superfluid-helium converter cooled to 0.9$\,$K. During an extensive test campaign in November 2017, we extracted up to 325000 ultracold neutrons after a one-minute irradiation of the target, over three times more than previously achieved with this so… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04071v3-abstract-full').style.display = 'inline'; document.getElementById('1809.04071v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.04071v3-abstract-full" style="display: none;"> We installed a source for ultracold neutrons at a new, dedicated spallation target at TRIUMF. The source was originally developed in Japan and uses a superfluid-helium converter cooled to 0.9$\,$K. During an extensive test campaign in November 2017, we extracted up to 325000 ultracold neutrons after a one-minute irradiation of the target, over three times more than previously achieved with this source. The corresponding ultracold-neutron density in the whole production and guide volume is 5.3$\,$cm$^{-3}$. The storage lifetime of ultracold neutrons in the source was initially 37$\,$s and dropped to 24$\,$s during the eighteen days of operation. During continuous irradiation of the spallation target, we were able to detect a sustained ultracold-neutron rate of up to 1500$\,$s$^{-1}$. Simulations of UCN production, UCN transport, temperature-dependent UCN yield, and temperature-dependent storage lifetime show excellent agreement with the experimental data and confirm that the ultracold-neutron-upscattering rate in superfluid helium is proportional to $T^7$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.04071v3-abstract-full').style.display = 'none'; document.getElementById('1809.04071v3-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 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 10 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 99, 025503 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.05838">arXiv:1804.05838</a> <span> [<a href="https://arxiv.org/pdf/1804.05838">pdf</a>, <a href="https://arxiv.org/format/1804.05838">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> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2018.04.025">10.1016/j.nima.2018.04.025 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Demonstration of sensitivity increase in mercury free-spin-precession magnetometers due to laser-based readout for neutron electric dipole moment searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=Horras%2C+M">M. Horras</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</a>, <a href="/search/physics?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/physics?searchtype=author&query=Kozel%2C+A">A. Kozel</a>, <a href="/search/physics?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/physics?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Mtchedlishvili%2C+A">A. Mtchedlishvili</a>, <a href="/search/physics?searchtype=author&query=Pignol%2C+G">G. Pignol</a>, <a href="/search/physics?searchtype=author&query=Piegsa%2C+F+M">F. M. Piegsa</a>, <a href="/search/physics?searchtype=author&query=Prashanth%2C+P">P. Prashanth</a>, <a href="/search/physics?searchtype=author&query=Qu%C3%A9m%C3%A9ner%2C+G">G. Qu茅m茅ner</a>, <a href="/search/physics?searchtype=author&query=Rawlik%2C+M">M. Rawlik</a>, <a href="/search/physics?searchtype=author&query=Rebreyend%2C+D">D. Rebreyend</a> , et al. (9 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="1804.05838v1-abstract-short" style="display: inline;"> We report on a laser based $^{199}$Hg co-magnetometer deployed in an experiment searching for a permanent electric dipole moment of the neutron. We demonstrate a more than five times increased signal to-noise-ratio in a direct comparison measurement with its $^{204}$Hg discharge bulb-based predecessor. An improved data model for the extraction of important system parameters such as the degrees of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.05838v1-abstract-full').style.display = 'inline'; document.getElementById('1804.05838v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.05838v1-abstract-full" style="display: none;"> We report on a laser based $^{199}$Hg co-magnetometer deployed in an experiment searching for a permanent electric dipole moment of the neutron. We demonstrate a more than five times increased signal to-noise-ratio in a direct comparison measurement with its $^{204}$Hg discharge bulb-based predecessor. An improved data model for the extraction of important system parameters such as the degrees of absorption and polarization is derived. Laser- and lamp-based data-sets can be consistently described by the improved model which permits to compare measurements using the two different light sources and to explain the increase in magnetometer performance. The laser-based magnetometer satisfies the magnetic field sensitivity requirements for the next generation nEDM experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.05838v1-abstract-full').style.display = 'none'; document.getElementById('1804.05838v1-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 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> NIM A 896 (2018) 129-138 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1706.00696">arXiv:1706.00696</a> <span> [<a href="https://arxiv.org/pdf/1706.00696">pdf</a>, <a href="https://arxiv.org/format/1706.00696">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> </div> </div> <p class="title is-5 mathjax"> The proton radius puzzle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">J. J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Schuhmann%2C+K">K. Schuhmann</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+M+A">M. Abdou Ahmed</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+P">P. Amaro</a>, <a href="/search/physics?searchtype=author&query=Biraben%2C+F">F. Biraben</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+J+M+R">J. M. R. Cardoso</a>, <a href="/search/physics?searchtype=author&query=Carvalho%2C+M+L">M. L. Carvalho</a>, <a href="/search/physics?searchtype=author&query=Covita%2C+D+S">D. S. Covita</a>, <a href="/search/physics?searchtype=author&query=Dax%2C+A">A. Dax</a>, <a href="/search/physics?searchtype=author&query=Dhawan%2C+S">S. Dhawan</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">M. Diepold</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+L+M+P">L. M. P. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Galtier%2C+S">S. Galtier</a>, <a href="/search/physics?searchtype=author&query=Giesen%2C+A">A. Giesen</a>, <a href="/search/physics?searchtype=author&query=Gouvea%2C+A+L">A. L. Gouvea</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6tzfried%2C+J">J. G枚tzfried</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+T">T. Graf</a>, <a href="/search/physics?searchtype=author&query=Guerra%2C+M">M. Guerra</a>, <a href="/search/physics?searchtype=author&query=Haack%2C+J">J. Haack</a>, <a href="/search/physics?searchtype=author&query=H%C3%A4nsch%2C+T+W">T. W. H盲nsch</a>, <a href="/search/physics?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/physics?searchtype=author&query=Julien%2C+L">L. Julien</a> , et al. (27 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1706.00696v2-abstract-short" style="display: inline;"> High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy, which is known as the proton radius puzzle will be discussed in this paper, complemented with the new insights obtained from spectroscopy of muon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00696v2-abstract-full').style.display = 'inline'; document.getElementById('1706.00696v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1706.00696v2-abstract-full" style="display: none;"> High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy, which is known as the proton radius puzzle will be discussed in this paper, complemented with the new insights obtained from spectroscopy of muonic deuterium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1706.00696v2-abstract-full').style.display = 'none'; document.getElementById('1706.00696v2-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, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 June, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Moriond 2017 conference, 8 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 52nd Rencontres de Moriond on EW Interactions and Unified Theories, Mar 2017, La Thuile, Italy. pp.95-102 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1705.00352">arXiv:1705.00352</a> <span> [<a href="https://arxiv.org/pdf/1705.00352">pdf</a>, <a href="https://arxiv.org/format/1705.00352">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="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjd/e2017-80296-1">10.1140/epjd/e2017-80296-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Theory of the n=2 levels in muonic helium-3 ions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Antognini%2C+A">Aldo Antognini</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Pohl%2C+R">Randolf Pohl</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="1705.00352v2-abstract-short" style="display: inline;"> The present knowledge of Lamb shift, fine-, and hyperfine structure of the 2S and 2P states in muonic helium-3 ions is reviewed in anticipation of the results of a first measurement of several $\mathrm{2S\rightarrow2P}$ transition frequencies in the muonic helium-3 ion, $\mathrm{渭^3He^+}$. This ion is the bound state of a single negative muon $渭^-$ and a bare helium-3 nucleus (helion),… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.00352v2-abstract-full').style.display = 'inline'; document.getElementById('1705.00352v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1705.00352v2-abstract-full" style="display: none;"> The present knowledge of Lamb shift, fine-, and hyperfine structure of the 2S and 2P states in muonic helium-3 ions is reviewed in anticipation of the results of a first measurement of several $\mathrm{2S\rightarrow2P}$ transition frequencies in the muonic helium-3 ion, $\mathrm{渭^3He^+}$. This ion is the bound state of a single negative muon $渭^-$ and a bare helium-3 nucleus (helion), $\mathrm{^3He^{++}}$. A term-by-term comparison of all available sources, including new, updated, and so far unpublished calculations, reveals reliable values and uncertainties of the QED and nuclear structure-dependent contributions to the Lamb shift and the hyperfine splitting. These values are essential for the determination of the helion rms charge radius and the nuclear structure effects to the hyperfine splitting in $\mathrm{渭^3He^+}$. With this review we continue our series of theory summaries in light muonic atoms; see Antognini et al., Ann. Phys. 331, 127 (2013), Krauth et al., Ann.Phys. 366, 168 (2016), and Diepold et al., ArXiv 1606.05231 (2016). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1705.00352v2-abstract-full').style.display = 'none'; document.getElementById('1705.00352v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 April, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">27 pages, continues series of theory summaries from muonic hydrogen up to muonic helium-4, revised manuscript, updated numbers</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> EPJD (2017) 71: 341 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1609.03440">arXiv:1609.03440</a> <span> [<a href="https://arxiv.org/pdf/1609.03440">pdf</a>, <a href="https://arxiv.org/ps/1609.03440">ps</a>, <a href="https://arxiv.org/format/1609.03440">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> </div> </div> <p class="title is-5 mathjax"> Laser Spectroscopy of Muonic Atoms and Ions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Pohl%2C+R">Randolf Pohl</a>, <a href="/search/physics?searchtype=author&query=Nez%2C+F">Fran莽ois Nez</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+L+M+P">Luis M. P. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+M+A">Marwan Abdou Ahmed</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">Fernando D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+P">Pedro Amaro</a>, <a href="/search/physics?searchtype=author&query=Biraben%2C+F">Fran莽ois Biraben</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+J+M+R">Jo茫o M. R. Cardoso</a>, <a href="/search/physics?searchtype=author&query=Covita%2C+D+S">Daniel S. Covita</a>, <a href="/search/physics?searchtype=author&query=Dax%2C+A">Andreas Dax</a>, <a href="/search/physics?searchtype=author&query=Dhawan%2C+S">Satish Dhawan</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Galtier%2C+S">Sandrine Galtier</a>, <a href="/search/physics?searchtype=author&query=Giesen%2C+A">Adolf Giesen</a>, <a href="/search/physics?searchtype=author&query=Gouvea%2C+A+L">Andrea L. Gouvea</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6tzfried%2C+J">Johannes G枚tzfried</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+T">Thomas Graf</a>, <a href="/search/physics?searchtype=author&query=H%C3%A4nsch%2C+T+W">Theodor W. H盲nsch</a>, <a href="/search/physics?searchtype=author&query=Hildebrandt%2C+M">Malte Hildebrandt</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/physics?searchtype=author&query=Julien%2C+L">Lucile Julien</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">Klaus Kirch</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">Andreas Knecht</a>, <a href="/search/physics?searchtype=author&query=Knowles%2C+P">Paul Knowles</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="1609.03440v1-abstract-short" style="display: inline;"> Laser spectroscopy of the Lamb shift (2S-2P energy difference) in light muonic atoms or ions, in which one negative muon $渭^-$ is bound to a nucleus, has been performed. The measurements yield significantly improved values of the root-mean-square charge radii of the nuclei, owing to the large muon mass, which results in a vastly increased muon wave function overlap with the nucleus. The values of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.03440v1-abstract-full').style.display = 'inline'; document.getElementById('1609.03440v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1609.03440v1-abstract-full" style="display: none;"> Laser spectroscopy of the Lamb shift (2S-2P energy difference) in light muonic atoms or ions, in which one negative muon $渭^-$ is bound to a nucleus, has been performed. The measurements yield significantly improved values of the root-mean-square charge radii of the nuclei, owing to the large muon mass, which results in a vastly increased muon wave function overlap with the nucleus. The values of the proton and deuteron radii are 10 and 3 times more accurate than the respective CODATA values, but 7 standard deviations smaller. Data on muonic helium-3 and -4 ions is being analyzed and will give new insights. In future, the (magnetic) Zemach radii of the proton and the helium-3 nuclei will be determined from laser spectroscopy of the 1S hyperfine splittings, and the Lamb shifts of muonic Li, Be and B can be used to improve the respective charge radii. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1609.03440v1-abstract-full').style.display = 'none'; document.getElementById('1609.03440v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">Contribution to LEAP 2016 in Kanazawa, Japan</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.05231">arXiv:1606.05231</a> <span> [<a href="https://arxiv.org/pdf/1606.05231">pdf</a>, <a href="https://arxiv.org/format/1606.05231">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="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.aop.2018.07.015">10.1016/j.aop.2018.07.015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Theory of the Lamb shift and Fine Structure in muonic $\mathrm{^4He}$ ions and the muonic $\mathrm{^3He-^4He}$ Isotope Shift </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Antognini%2C+A">Aldo Antognini</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Pohl%2C+R">Randolf Pohl</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="1606.05231v3-abstract-short" style="display: inline;"> We provide an up to date summary of the theory contributions to the 2S-2P Lamb shift and the fine structure of the 2P state in the muonic helium ion $(\mathrm{渭^4He})^+$. This summary serves as the basis for the extraction of the alpha particle charge radius from the muonic helium Lamb shift measurements at the Paul Scherrer Institute, Switzerland. Individual theory contributions needed for a char… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.05231v3-abstract-full').style.display = 'inline'; document.getElementById('1606.05231v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.05231v3-abstract-full" style="display: none;"> We provide an up to date summary of the theory contributions to the 2S-2P Lamb shift and the fine structure of the 2P state in the muonic helium ion $(\mathrm{渭^4He})^+$. This summary serves as the basis for the extraction of the alpha particle charge radius from the muonic helium Lamb shift measurements at the Paul Scherrer Institute, Switzerland. Individual theory contributions needed for a charge radius extraction are compared and compiled into a consistent summary. The influence of the alpha particle charge distribution on the elastic two-photon exchange is studied to take into account possible model-dependencies of the energy levels on the electric form factor of the nucleus. We also discuss the theory uncertainty which enters the extraction of the $\mathrm{^3He-^4He}$ isotope shift from the muonic measurements. The theory uncertainty of the extraction is much smaller than a present discrepancy between previous isotope shift measurements. This work completes our series of $n=2$ theory compilations in light muonic atoms which we have performed already for muonic hydrogen, deuterium, and helium-3 ions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.05231v3-abstract-full').style.display = 'none'; document.getElementById('1606.05231v3-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 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 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">18 Pages, revised and updated manuscript, numbers are now same as in published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Ann. Phys. 396, 220 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.03235">arXiv:1509.03235</a> <span> [<a href="https://arxiv.org/pdf/1509.03235">pdf</a>, <a href="https://arxiv.org/ps/1509.03235">ps</a>, <a href="https://arxiv.org/format/1509.03235">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> </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/201611301006">10.1051/epjconf/201611301006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experiments towards resolving the proton charge radius puzzle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Antognini%2C+A">A. Antognini</a>, <a href="/search/physics?searchtype=author&query=Schuhmann%2C+K">K. Schuhmann</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+P">P. Amaro</a>, <a href="/search/physics?searchtype=author&query=Abdou-Ahmed%2C+M">M. Abdou-Ahmed</a>, <a href="/search/physics?searchtype=author&query=Biraben%2C+F">F. Biraben</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+T+-">T. -L. Chen</a>, <a href="/search/physics?searchtype=author&query=Covita%2C+D+S">D. S. Covita</a>, <a href="/search/physics?searchtype=author&query=Dax%2C+A+J">A. J. Dax</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">M. Diepold</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+L+M+P">L. M. P. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Galtier%2C+S">S. Galtier</a>, <a href="/search/physics?searchtype=author&query=Gouvea%2C+A+L">A. L. Gouvea</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6tzfried%2C+J">J. G枚tzfried</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+T">T. Graf</a>, <a href="/search/physics?searchtype=author&query=H%C3%A4nsch%2C+T+W">T. W. H盲nsch</a>, <a href="/search/physics?searchtype=author&query=Hildebrandt%2C+M">M. Hildebrandt</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">P. Indelicato</a>, <a href="/search/physics?searchtype=author&query=Julien%2C+L">L. Julien</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">A. Knecht</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">F. Kottmann</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">J. J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+Y+-">Y. -W. Liu</a> , et al. (12 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="1509.03235v2-abstract-short" style="display: inline;"> We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the results from scattering and regular hydrogen spectroscopy. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.03235v2-abstract-full" style="display: none;"> We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the results from scattering and regular hydrogen spectroscopy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.03235v2-abstract-full').style.display = 'none'; document.getElementById('1509.03235v2-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 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, Few Body Systems FB21 conference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.06563">arXiv:1506.06563</a> <span> [<a href="https://arxiv.org/pdf/1506.06563">pdf</a>, <a href="https://arxiv.org/format/1506.06563">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/PhysRevD.92.052008">10.1103/PhysRevD.92.052008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Gravitational Depolarization of Ultracold Neutrons: Comparison with Data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+C+A">C. A. Baker</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/physics?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/physics?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/physics?searchtype=author&query=van+der+Grinten%2C+M">M. van der Grinten</a>, <a href="/search/physics?searchtype=author&query=Grujic%2C+Z+D">Z. D. Grujic</a>, <a href="/search/physics?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=Helaine%2C+V">V. Helaine</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Ivanov%2C+S+N">S. N. Ivanov</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</a>, <a href="/search/physics?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/physics?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/physics?searchtype=author&query=Krempel%2C+J">J. Krempel</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="1506.06563v3-abstract-short" style="display: inline;"> We compare the expected effects of so-called gravitationally enhanced depolarization of ultracold neutrons to measurements carried out in a spin-precession chamber exposed to a variety of vertical magnetic-field gradients. In particular, we have investigated the dependence upon these field gradients of spin depolarization rates and also of shifts in the measured neutron Larmor precession frequency… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.06563v3-abstract-full').style.display = 'inline'; document.getElementById('1506.06563v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.06563v3-abstract-full" style="display: none;"> We compare the expected effects of so-called gravitationally enhanced depolarization of ultracold neutrons to measurements carried out in a spin-precession chamber exposed to a variety of vertical magnetic-field gradients. In particular, we have investigated the dependence upon these field gradients of spin depolarization rates and also of shifts in the measured neutron Larmor precession frequency. We find excellent qualitative agreement, with gravitationally enhanced depolarization accounting for several previously unexplained features in the data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.06563v3-abstract-full').style.display = 'none'; document.getElementById('1506.06563v3-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 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </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. Updated: section added about implications for current nEDM limit</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 92, 052008 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.02734">arXiv:1506.02734</a> <span> [<a href="https://arxiv.org/pdf/1506.02734">pdf</a>, <a href="https://arxiv.org/format/1506.02734">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> </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.92.022514">10.1103/PhysRevA.92.022514 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+P">Pedro Amaro</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Fratini%2C+F">Filippo Fratini</a>, <a href="/search/physics?searchtype=author&query=Safari%2C+L">Laleh Safari</a>, <a href="/search/physics?searchtype=author&query=Machado%2C+J">Jorge Machado</a>, <a href="/search/physics?searchtype=author&query=Antognini%2C+A">Aldo Antognini</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/physics?searchtype=author&query=Pohl%2C+R">Randolf Pohl</a>, <a href="/search/physics?searchtype=author&query=Santos%2C+J+P">Jos茅 Paulo Santos</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="1506.02734v2-abstract-short" style="display: inline;"> Quantum interference between energetically close states is theoretically investigated, with the state structure being observed via laser spectroscopy. In this work, we focus on hyperfine states of selected hydrogenic muonic isotopes, and on how quantum interference affects the measured Lamb shift. The process of photon excitation and subsequent photon decay is implemented within the framework of n… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.02734v2-abstract-full').style.display = 'inline'; document.getElementById('1506.02734v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.02734v2-abstract-full" style="display: none;"> Quantum interference between energetically close states is theoretically investigated, with the state structure being observed via laser spectroscopy. In this work, we focus on hyperfine states of selected hydrogenic muonic isotopes, and on how quantum interference affects the measured Lamb shift. The process of photon excitation and subsequent photon decay is implemented within the framework of nonrelativistic second-order perturbation theory. Due to its experimental interest, calculations are performed for muonic hydrogen, deuterium, and helium-3. We restrict our analysis to the case of photon scattering by incident linear polarized photons and the polarization of the scattered photons not being observed. We conclude that while quantum interference effects can be safely neglected in muonic hydrogen and helium-3, in the case of muonic deuterium there are resonances with close proximity, where quantum interference effects can induce shifts up to a few percent of the linewidth, assuming a pointlike detector. However, by taking into account the geometry of the setup used by the CREMA collaboration, this effect is reduced to less than 0.2% of the linewidth in all possible cases, which makes it irrelevant at the present level of accuracy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.02734v2-abstract-full').style.display = 'none'; document.getElementById('1506.02734v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </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, 4 Figs. Shorter version as recommended by the referee. More details can be found in v1</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.01298">arXiv:1506.01298</a> <span> [<a href="https://arxiv.org/pdf/1506.01298">pdf</a>, <a href="https://arxiv.org/format/1506.01298">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="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.aop.2015.12.006">10.1016/j.aop.2015.12.006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Theory of the n=2 levels in muonic deuterium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Antognini%2C+A">Aldo Antognini</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Pohl%2C+R">Randolf Pohl</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="1506.01298v2-abstract-short" style="display: inline;"> The present knowledge of Lamb shift, fine- and hyperfine structure of the $\mathrm{2S}$ and $\mathrm{2P}$ states in muonic deuterium is reviewed in anticipation of the results of a first measurement of several $\mathrm{2S-2P}$ transition frequencies in muonic deuterium ($渭\mathrm{d}$). A term-by-term comparison of all available sources reveals reliable values and uncertainties of the QED and nucle… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.01298v2-abstract-full').style.display = 'inline'; document.getElementById('1506.01298v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.01298v2-abstract-full" style="display: none;"> The present knowledge of Lamb shift, fine- and hyperfine structure of the $\mathrm{2S}$ and $\mathrm{2P}$ states in muonic deuterium is reviewed in anticipation of the results of a first measurement of several $\mathrm{2S-2P}$ transition frequencies in muonic deuterium ($渭\mathrm{d}$). A term-by-term comparison of all available sources reveals reliable values and uncertainties of the QED and nuclear structure-dependent contributions to the Lamb shift, which are essential for a determination of the deuteron rms charge radius from $渭\mathrm{d}$. Apparent discrepancies between different sources are resolved, in particular for the difficult two-photon exchange contributions. Problematic single-sourced terms are identified which require independent recalculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.01298v2-abstract-full').style.display = 'none'; document.getElementById('1506.01298v2-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 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </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">26 pages, add missing feynman diagrams (Fig. 3), renumber items (Tab. IV), correct a sum (column 5, Tab. IV)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.00446">arXiv:1506.00446</a> <span> [<a href="https://arxiv.org/pdf/1506.00446">pdf</a>, <a href="https://arxiv.org/format/1506.00446">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div 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.115.162502">10.1103/PhysRevLett.115.162502 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of gravitationally induced vertical striation of polarized ultracold neutrons by spin-echo spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Ayres%2C+N+J">N. J. Ayres</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Griffith%2C+W+C">W. C. Griffith</a>, <a href="/search/physics?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/physics?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Knowles%2C+P">P. Knowles</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</a>, <a href="/search/physics?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/physics?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/physics?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/physics?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Lemi%C3%A8re%2C+Y">Y. Lemi猫re</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="1506.00446v2-abstract-short" style="display: inline;"> We describe a spin-echo method for ultracold neutrons (UCNs) confined in a precession chamber and exposed to a $|B_0|=1~\text{渭T}$ magnetic field. We have demonstrated that the analysis of UCN spin-echo resonance signals in combination with knowledge of the ambient magnetic field provides an excellent method by which to reconstruct the energy spectrum of a confined ensemble of neutrons. The method… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.00446v2-abstract-full').style.display = 'inline'; document.getElementById('1506.00446v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.00446v2-abstract-full" style="display: none;"> We describe a spin-echo method for ultracold neutrons (UCNs) confined in a precession chamber and exposed to a $|B_0|=1~\text{渭T}$ magnetic field. We have demonstrated that the analysis of UCN spin-echo resonance signals in combination with knowledge of the ambient magnetic field provides an excellent method by which to reconstruct the energy spectrum of a confined ensemble of neutrons. The method takes advantage of the relative dephasing of spins arising from a gravitationally induced striation of stored UCN of different energies, and also permits an improved determination of the vertical magnetic-field gradient with an exceptional accuracy of $1.1~\text{pT/cm}$. This novel combination of a well-known nuclear resonance method and gravitationally induced vertical striation is unique in the realm of nuclear and particle physics and should prove to be invaluable for the assessment of systematic effects in precision experiments such as searches for an electric dipole moment of the neutron or the measurement of the neutron lifetime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.00446v2-abstract-full').style.display = 'none'; document.getElementById('1506.00446v2-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 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages 5 figures, accepted by PRL, September, 08 2015</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 115, 162502 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.06879">arXiv:1505.06879</a> <span> [<a href="https://arxiv.org/pdf/1505.06879">pdf</a>, <a href="https://arxiv.org/format/1505.06879">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> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/1.4921195">10.1063/1.4921195 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Improved X-ray detection and particle identification with avalanche photodiodes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Diepold%2C+M">Marc Diepold</a>, <a href="/search/physics?searchtype=author&query=Fernandes%2C+L+M+P">Luis M. P. Fernandes</a>, <a href="/search/physics?searchtype=author&query=Machado%2C+J">Jorge Machado</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+P">Pedro Amaro</a>, <a href="/search/physics?searchtype=author&query=Abdou-Ahmed%2C+M">Marwan Abdou-Ahmed</a>, <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">Fernando D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Antognini%2C+A">Aldo Antognini</a>, <a href="/search/physics?searchtype=author&query=Biraben%2C+F">Fran莽ois Biraben</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+T">Tzu-Ling Chen</a>, <a href="/search/physics?searchtype=author&query=Covita%2C+D+S">Daniel S. Covita</a>, <a href="/search/physics?searchtype=author&query=Dax%2C+A+J">Andreas J. Dax</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">Beatrice Franke</a>, <a href="/search/physics?searchtype=author&query=Galtier%2C+S">Sandrine Galtier</a>, <a href="/search/physics?searchtype=author&query=Gouvea%2C+A+L">Andrea L. Gouvea</a>, <a href="/search/physics?searchtype=author&query=G%C3%B6tzfried%2C+J">Johannes G枚tzfried</a>, <a href="/search/physics?searchtype=author&query=Graf%2C+T">Thomas Graf</a>, <a href="/search/physics?searchtype=author&query=H%C3%A4nsch%2C+T+W">Theodor W. H盲nsch</a>, <a href="/search/physics?searchtype=author&query=Hildebrandt%2C+M">Malte Hildebrandt</a>, <a href="/search/physics?searchtype=author&query=Indelicato%2C+P">Paul Indelicato</a>, <a href="/search/physics?searchtype=author&query=Julien%2C+L">Lucile Julien</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">Klaus Kirch</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">Andreas Knecht</a>, <a href="/search/physics?searchtype=author&query=Kottmann%2C+F">Franz Kottmann</a>, <a href="/search/physics?searchtype=author&query=Krauth%2C+J+J">Julian J. Krauth</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+Y">Yi-Wei Liu</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="1505.06879v1-abstract-short" style="display: inline;"> Avalanche photodiodes are commonly used as detectors for low energy x-rays. In this work we report on a fitting technique used to account for different detector responses resulting from photo absorption in the various APD layers. The use of this technique results in an improvement of the energy resolution at 8.2 keV by up to a factor of 2, and corrects the timing information by up to 25 ns to acco… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.06879v1-abstract-full').style.display = 'inline'; document.getElementById('1505.06879v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.06879v1-abstract-full" style="display: none;"> Avalanche photodiodes are commonly used as detectors for low energy x-rays. In this work we report on a fitting technique used to account for different detector responses resulting from photo absorption in the various APD layers. The use of this technique results in an improvement of the energy resolution at 8.2 keV by up to a factor of 2, and corrects the timing information by up to 25 ns to account for space dependent electron drift time. In addition, this waveform analysis is used for particle identification, e.g. to distinguish between x-rays and MeV electrons in our experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.06879v1-abstract-full').style.display = 'none'; document.getElementById('1505.06879v1-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 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </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, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Rev. Sci. Inst. 86, 053102 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1503.08651">arXiv:1503.08651</a> <span> [<a href="https://arxiv.org/pdf/1503.08651">pdf</a>, <a href="https://arxiv.org/format/1503.08651">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="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/epjd/e2015-60207-4">10.1140/epjd/e2015-60207-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of a false electric dipole moment signal from $^{199}$Hg atoms exposed to an inhomogeneous magnetic field </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+C+A">C. A. Baker</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/physics?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/physics?searchtype=author&query=van+der+Grinten%2C+M+G+D">M. G. D. van der Grinten</a>, <a href="/search/physics?searchtype=author&query=Grujic%2C+Z">Z. Grujic</a>, <a href="/search/physics?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/physics?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/physics?searchtype=author&query=Horras%2C+M">M. Horras</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Ivanov%2C+S+N">S. N. Ivanov</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kerma%C3%AFdic%2C+Y">Y. Kerma茂dic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Knowles%2C+P">P. Knowles</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</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="1503.08651v2-abstract-short" style="display: inline;"> We report on the measurement of a Larmor frequency shift proportional to the electric-field strength for $^{199}{\rm Hg}$ atoms contained in a volume permeated with aligned magnetic and electric fields. This shift arises from the interplay between the inevitable magnetic field gradients and the motional magnetic field. The proportionality to electric-field strength makes it apparently similar to a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.08651v2-abstract-full').style.display = 'inline'; document.getElementById('1503.08651v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1503.08651v2-abstract-full" style="display: none;"> We report on the measurement of a Larmor frequency shift proportional to the electric-field strength for $^{199}{\rm Hg}$ atoms contained in a volume permeated with aligned magnetic and electric fields. This shift arises from the interplay between the inevitable magnetic field gradients and the motional magnetic field. The proportionality to electric-field strength makes it apparently similar to an electric dipole moment (EDM) signal, although unlike an EDM this effect is P- and T-conserving. We have used a neutron magnetic resonance EDM spectrometer, featuring a mercury co-magnetometer and an array of external cesium magnetometers, to measure the shift as a function of the applied magnetic field gradient. Our results are in good agreement with theoretical expectations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1503.08651v2-abstract-full').style.display = 'none'; document.getElementById('1503.08651v2-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 August, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. D (2015) 69:225 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1502.06876">arXiv:1502.06876</a> <span> [<a href="https://arxiv.org/pdf/1502.06876">pdf</a>, <a href="https://arxiv.org/format/1502.06876">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> A device for simultaneous spin analysis of ultracold neutrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/physics?searchtype=author&query=Gruji%C4%87%2C+Z+D">Z. D. Gruji膰</a>, <a href="/search/physics?searchtype=author&query=Hayen%2C+L">L. Hayen</a>, <a href="/search/physics?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/physics?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kermaidic%2C+Y">Y. Kermaidic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Komposch%2C+S">S. Komposch</a>, <a href="/search/physics?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/physics?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/physics?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Lemi%C3%A8re%2C+Y">Y. Lemi猫re</a>, <a href="/search/physics?searchtype=author&query=Mtchedlishvili%2C+A">A. Mtchedlishvili</a>, <a href="/search/physics?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/physics?searchtype=author&query=Piegsa%2C+F+M">F. M. Piegsa</a> , et al. (15 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1502.06876v2-abstract-short" style="display: inline;"> We report on the design and first tests of a device allowing for measurement of ultracold neutrons polarisation by means of the simultaneous analysis of the two spin components. The device was developed in the framework of the neutron electric dipole moment experiment at the Paul Scherrer Institute. Individual parts and the entire newly built system have been characterised with ultracold neutrons.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.06876v2-abstract-full').style.display = 'inline'; document.getElementById('1502.06876v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1502.06876v2-abstract-full" style="display: none;"> We report on the design and first tests of a device allowing for measurement of ultracold neutrons polarisation by means of the simultaneous analysis of the two spin components. The device was developed in the framework of the neutron electric dipole moment experiment at the Paul Scherrer Institute. Individual parts and the entire newly built system have been characterised with ultracold neutrons. The gain in statistical sensitivity obtained with the simultaneous spin analyser is $(18.2\pm6.1)\%$ relative to the former sequential analyser under nominal running conditions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1502.06876v2-abstract-full').style.display = 'none'; document.getElementById('1502.06876v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 October, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 February, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1410.8259">arXiv:1410.8259</a> <span> [<a href="https://arxiv.org/pdf/1410.8259">pdf</a>, <a href="https://arxiv.org/format/1410.8259">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="Atomic Physics">physics.atom-ph</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/10.1016/j.physletb.2014.10.046">10.1016/j.physletb.2014.10.046 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A measurement of the neutron to 199Hg magnetic moment ratio </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Baker%2C+C+A">C. A. Baker</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Burghoff%2C+M">M. Burghoff</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Geltenbort%2C+P">P. Geltenbort</a>, <a href="/search/physics?searchtype=author&query=Green%2C+K">K. Green</a>, <a href="/search/physics?searchtype=author&query=van+der+Grinten%2C+M+G+D">M. G. D. van der Grinten</a>, <a href="/search/physics?searchtype=author&query=Grujic%2C+Z">Z. Grujic</a>, <a href="/search/physics?searchtype=author&query=Harris%2C+P+G">P. G. Harris</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=H%C3%A9laine%2C+V">V. H茅laine</a>, <a href="/search/physics?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/physics?searchtype=author&query=Horras%2C+M">M. Horras</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Ivanov%2C+S+N">S. N. Ivanov</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kerma%C3%AFdic%2C+Y">Y. Kerma茂dic</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">A. Knecht</a> , et al. (29 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1410.8259v2-abstract-short" style="display: inline;"> The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result $纬_{\rm n}/纬_{\rm Hg} = 3.8424574(30)$. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1410.8259v2-abstract-full" style="display: none;"> The neutron gyromagnetic ratio has been measured relative to that of the 199Hg atom with an uncertainty of 0.8 ppm. We employed an apparatus where ultracold neutrons and mercury atoms are stored in the same volume and report the result $纬_{\rm n}/纬_{\rm Hg} = 3.8424574(30)$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1410.8259v2-abstract-full').style.display = 'none'; document.getElementById('1410.8259v2-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 October, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physics Letters B 739, 128-132 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1408.6752">arXiv:1408.6752</a> <span> [<a href="https://arxiv.org/pdf/1408.6752">pdf</a>, <a href="https://arxiv.org/format/1408.6752">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-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/10.1063/1.4894158">10.1063/1.4894158 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dynamic stabilization of the magnetic field surrounding the neutron electric dipole moment spectrometer at the Paul Scherrer Institute </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Burri%2C+F">F. Burri</a>, <a href="/search/physics?searchtype=author&query=Chowdhuri%2C+Z">Z. Chowdhuri</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Grujic%2C+Z">Z. Grujic</a>, <a href="/search/physics?searchtype=author&query=Helaine%2C+V">V. Helaine</a>, <a href="/search/physics?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+-">H. -C. Koch</a>, <a href="/search/physics?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/physics?searchtype=author&query=Krempel%2C+J">J. Krempel</a>, <a href="/search/physics?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Lemiere%2C+Y">Y. Lemiere</a>, <a href="/search/physics?searchtype=author&query=Meier%2C+M">M. Meier</a>, <a href="/search/physics?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/physics?searchtype=author&query=Piegsa%2C+F+M">F. M. Piegsa</a>, <a href="/search/physics?searchtype=author&query=Pignol%2C+G">G. Pignol</a>, <a href="/search/physics?searchtype=author&query=Plonka-Spehr%2C+C">C. Plonka-Spehr</a>, <a href="/search/physics?searchtype=author&query=Prashanth%2C+P+N">P. N. Prashanth</a> , et al. (12 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="1408.6752v1-abstract-short" style="display: inline;"> The Surrounding Field Compensation (SFC) system described in this work is installed around the four-layer Mu-metal magnetic shield of the neutron electric dipole moment spectrometer located at the Paul Scherrer Institute. The SFC system reduces the DC component of the external magnetic field by a factor of about 20. Within a control volume of approximately 2.5m x 2.5m x 3m disturbances of the magn… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.6752v1-abstract-full').style.display = 'inline'; document.getElementById('1408.6752v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1408.6752v1-abstract-full" style="display: none;"> The Surrounding Field Compensation (SFC) system described in this work is installed around the four-layer Mu-metal magnetic shield of the neutron electric dipole moment spectrometer located at the Paul Scherrer Institute. The SFC system reduces the DC component of the external magnetic field by a factor of about 20. Within a control volume of approximately 2.5m x 2.5m x 3m disturbances of the magnetic field are attenuated by factors of 5 to 50 at a bandwidth from $10^{-3}$ Hz up to 0.5 Hz, which corresponds to integration times longer than several hundreds of seconds and represent the important timescale for the nEDM measurement. These shielding factors apply to random environmental noise from arbitrary sources. This is achieved via a proportional-integral feedback stabilization system that includes a regularized pseudoinverse matrix of proportionality factors which correlates magnetic field changes at all sensor positions to current changes in the SFC coils. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.6752v1-abstract-full').style.display = 'none'; document.getElementById('1408.6752v1-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 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">33 pages, 18 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J. Appl. Phys. 116, 084510 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.1505">arXiv:1110.1505</a> <span> [<a href="https://arxiv.org/pdf/1110.1505">pdf</a>, <a href="https://arxiv.org/format/1110.1505">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="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> An Improved Search for the Neutron Electric Dipole Moment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Burghoff%2C+M">M. Burghoff</a>, <a href="/search/physics?searchtype=author&query=Schnabel%2C+A">A. Schnabel</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Lemiere%2C+Y">Y. Lemiere</a>, <a href="/search/physics?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</a>, <a href="/search/physics?searchtype=author&query=Pierre%2C+E">E. Pierre</a>, <a href="/search/physics?searchtype=author&query=Quemener%2C+G">G. Quemener</a>, <a href="/search/physics?searchtype=author&query=Zejma%2C+J">J. Zejma</a>, <a href="/search/physics?searchtype=author&query=Kasprzak%2C+M">M. Kasprzak</a>, <a href="/search/physics?searchtype=author&query=Knowles%2C+P">P. Knowles</a>, <a href="/search/physics?searchtype=author&query=Weis%2C+A">A. Weis</a>, <a href="/search/physics?searchtype=author&query=Pignol%2C+G">G. Pignol</a>, <a href="/search/physics?searchtype=author&query=Rebreyend%2C+D">D. Rebreyend</a>, <a href="/search/physics?searchtype=author&query=Afach%2C+S">S. Afach</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Becker%2C+J">J. Becker</a>, <a href="/search/physics?searchtype=author&query=Severijns%2C+N">N. Severijns</a>, <a href="/search/physics?searchtype=author&query=Roccia%2C+S">S. Roccia</a>, <a href="/search/physics?searchtype=author&query=Plonka-Spehr%2C+C">C. Plonka-Spehr</a>, <a href="/search/physics?searchtype=author&query=Zennerz%2C+J">J. Zennerz</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=Koch%2C+H+C">H. C. Koch</a>, <a href="/search/physics?searchtype=author&query=Kraft%2C+A">A. Kraft</a>, <a href="/search/physics?searchtype=author&query=Lauer%2C+T">T. Lauer</a> , et al. (12 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="1110.1505v1-abstract-short" style="display: inline;"> A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since there is no sign of CPT-violation. The search for a neutron electric dipole moment (nEDM) probes CP violation within and beyond the Stan- dard Model. The experiment, set up at the Paul Scherrer Institute (PSI), an improved… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.1505v1-abstract-full').style.display = 'inline'; document.getElementById('1110.1505v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.1505v1-abstract-full" style="display: none;"> A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since there is no sign of CPT-violation. The search for a neutron electric dipole moment (nEDM) probes CP violation within and beyond the Stan- dard Model. The experiment, set up at the Paul Scherrer Institute (PSI), an improved, upgraded version of the apparatus which provided the current best experimental limit, dn < 2.9E-26 ecm (90% C.L.), by the RAL/Sussex/ILL collaboration: Baker et al., Phys. Rev. Lett. 97, 131801 (2006). In the next two years we aim to improve the sensitivity of the apparatus to sigma(dn) = 2.6E-27 ecm corresponding to an upper limit of dn < 5E-27 ecm (95% C.L.), in case for a null result. In parallel the collaboration works on the design of a new apparatus to further increase the sensitivity to sigma(dn) = 2.6E-28 ecm. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.1505v1-abstract-full').style.display = 'none'; document.getElementById('1110.1505v1-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 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">APS Division for particles and fields, Conference Proceedings, Two 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/1009.6060">arXiv:1009.6060</a> <span> [<a href="https://arxiv.org/pdf/1009.6060">pdf</a>, <a href="https://arxiv.org/ps/1009.6060">ps</a>, <a href="https://arxiv.org/format/1009.6060">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/10.1016/j.physb.2010.09.044">10.1016/j.physb.2010.09.044 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Testing isotropy of the universe using the Ramsey resonance technique on ultracold neutron spins </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Altarev%2C+I">I. Altarev</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+G">G. Ban</a>, <a href="/search/physics?searchtype=author&query=Bison%2C+G">G. Bison</a>, <a href="/search/physics?searchtype=author&query=Bodek%2C+K">K. Bodek</a>, <a href="/search/physics?searchtype=author&query=Daum%2C+M">M. Daum</a>, <a href="/search/physics?searchtype=author&query=Fertl%2C+M">M. Fertl</a>, <a href="/search/physics?searchtype=author&query=Fierlinger%2C+P">P. Fierlinger</a>, <a href="/search/physics?searchtype=author&query=Franke%2C+B">B. Franke</a>, <a href="/search/physics?searchtype=author&query=Gutsmiedl%2C+E">E. Gutsmiedl</a>, <a href="/search/physics?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/physics?searchtype=author&query=Henneck%2C+R">R. Henneck</a>, <a href="/search/physics?searchtype=author&query=Horras%2C+M">M. Horras</a>, <a href="/search/physics?searchtype=author&query=Khomutov%2C+N">N. Khomutov</a>, <a href="/search/physics?searchtype=author&query=Kirch%2C+K">K. Kirch</a>, <a href="/search/physics?searchtype=author&query=Kistryn%2C+S">S. Kistryn</a>, <a href="/search/physics?searchtype=author&query=Kraft%2C+A">A. Kraft</a>, <a href="/search/physics?searchtype=author&query=Knecht%2C+A">A. Knecht</a>, <a href="/search/physics?searchtype=author&query=Knowles%2C+P">P. Knowles</a>, <a href="/search/physics?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/physics?searchtype=author&query=Lauer%2C+T">T. Lauer</a>, <a href="/search/physics?searchtype=author&query=Lauss%2C+B">B. Lauss</a>, <a href="/search/physics?searchtype=author&query=Lefort%2C+T">T. Lefort</a>, <a href="/search/physics?searchtype=author&query=Lemi%C3%A8re%2C+Y">Y. Lemi猫re</a>, <a href="/search/physics?searchtype=author&query=Mtchedlishvili%2C+A">A. Mtchedlishvili</a>, <a href="/search/physics?searchtype=author&query=Naviliat-Cuncic%2C+O">O. Naviliat-Cuncic</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="1009.6060v1-abstract-short" style="display: inline;"> Physics at the Planck scale could be revealed by looking for tiny violations of fundamental symmetries in low energy experiments. In 2008, a sensitive test of the isotropy of the Universe using has been performed with stored ultracold neutrons (UCN), this is the first clock-comparison experiment performed with free neutrons. During several days we monitored the Larmor frequency of neutron spins in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.6060v1-abstract-full').style.display = 'inline'; document.getElementById('1009.6060v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1009.6060v1-abstract-full" style="display: none;"> Physics at the Planck scale could be revealed by looking for tiny violations of fundamental symmetries in low energy experiments. In 2008, a sensitive test of the isotropy of the Universe using has been performed with stored ultracold neutrons (UCN), this is the first clock-comparison experiment performed with free neutrons. During several days we monitored the Larmor frequency of neutron spins in a weak magnetic field using the Ramsey resonance technique. An non-zero cosmic axial field, violating rotational symmetry, would induce a daily variation of the precession frequency. Our null result constitutes one of the most stringent tests of Lorentz invariance to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1009.6060v1-abstract-full').style.display = 'none'; document.getElementById('1009.6060v1-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 September, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2010. </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 the PNCMI2010 conference</span> </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 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