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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/2404.05660">arXiv:2404.05660</a> <span> [<a href="https://arxiv.org/pdf/2404.05660">pdf</a>, <a href="https://arxiv.org/format/2404.05660">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"> Measurement of the ratio of the scalar polarizability to the vector polarizability for the $6s ^2S_{1/2} \rightarrow 7s ^2S_{1/2}$ transition in cesium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quirk%2C+J+A">Jonah A. Quirk</a>, <a href="/search/physics?searchtype=author&query=Tanner%2C+C+E">Carol E. Tanner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="2404.05660v1-abstract-short" style="display: inline;"> We report measurements of the ratio of the scalar polarizability $伪$ to the vector polarizability $尾$ for the $6s ^2S_{1/2} \rightarrow 7s ^2S_{1/2}$ transition in atomic cesium. These measurements are motivated by a discrepancy between the values of the vector transition polarizability as determined using two separate methods. In the present measurement, we use a two-pathway, coherent-control tec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.05660v1-abstract-full').style.display = 'inline'; document.getElementById('2404.05660v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.05660v1-abstract-full" style="display: none;"> We report measurements of the ratio of the scalar polarizability $伪$ to the vector polarizability $尾$ for the $6s ^2S_{1/2} \rightarrow 7s ^2S_{1/2}$ transition in atomic cesium. These measurements are motivated by a discrepancy between the values of the vector transition polarizability as determined using two separate methods. In the present measurement, we use a two-pathway, coherent-control technique in which we observe the interference between a two-photon interaction driven by infrared light at 1079 nm and a linear Stark-induced interaction driven by the mutually-coherent second harmonic of this infrared beam at 540 nm. The result of our measurements is $伪/尾= -9.902 \: (9)$, in good agreement with the previous determination of this ratio. This measurement, critical to the study of atomic parity violation in cesium, does not reduce the discrepancy between the two methods for the determination of the vector polarizability $尾$ for this transition. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.05660v1-abstract-full').style.display = 'none'; document.getElementById('2404.05660v1-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 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.09409">arXiv:2311.09409</a> <span> [<a href="https://arxiv.org/pdf/2311.09409">pdf</a>, <a href="https://arxiv.org/format/2311.09409">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"> Technique for a direct measurement of the cesium anapole moment using coherent rf and Raman interactions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Damitz%2C+A">Amy Damitz</a>, <a href="/search/physics?searchtype=author&query=Quirk%2C+J+A">Jonah A. Quirk</a>, <a href="/search/physics?searchtype=author&query=Tanner%2C+C+E">Carol E. Tanner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="2311.09409v2-abstract-short" style="display: inline;"> We report progress toward measurements of the electric dipole (E1) transition moments between hyperfine components of the ground state of atomic cesium. This transition is weakly E1 allowed due to weak interactions between nucleons within the nucleus, which lead to a parity-odd current distribution and its associated anapole moment. In this report, we discuss the experimental geometry of our measu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09409v2-abstract-full').style.display = 'inline'; document.getElementById('2311.09409v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.09409v2-abstract-full" style="display: none;"> We report progress toward measurements of the electric dipole (E1) transition moments between hyperfine components of the ground state of atomic cesium. This transition is weakly E1 allowed due to weak interactions between nucleons within the nucleus, which lead to a parity-odd current distribution and its associated anapole moment. In this report, we discuss the experimental geometry of our measurement scheme, explore the effects of extraneous fields that can obscure the signal, present initial measurements, analyze the sources and magnitudes of measurement noise, and suggest improvements to the current apparatus. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09409v2-abstract-full').style.display = 'none'; document.getElementById('2311.09409v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">14 pages, 17 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/2311.09169">arXiv:2311.09169</a> <span> [<a href="https://arxiv.org/pdf/2311.09169">pdf</a>, <a href="https://arxiv.org/format/2311.09169">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"> Measurement of the static Stark Shift of the $7s \ ^2S_{1/2}$ level in atomic cesium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quirk%2C+J+A">Jonah A. Quirk</a>, <a href="/search/physics?searchtype=author&query=Jacobsen%2C+A">Aidan Jacobsen</a>, <a href="/search/physics?searchtype=author&query=Damitz%2C+A">Amy Damitz</a>, <a href="/search/physics?searchtype=author&query=Tanner%2C+C+E">Carol E. Tanner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="2311.09169v2-abstract-short" style="display: inline;"> We report a new precision measurement of the dc Stark shift of the $6s\hspace{1mm} ^2S_{1/2} \rightarrow 7s\hspace{1mm}^2S_{1/2}$ transition in atomic cesium-133. Our result is 0.72246 (29) $\textrm{Hz}(\textrm{V}/\textrm{cm})^{-2}$. This result differs from a previous measurement of the Stark shift by $\sim$0.5\%. We use this value to recalculate the magnitude of the reduced dipole matrix element… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09169v2-abstract-full').style.display = 'inline'; document.getElementById('2311.09169v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.09169v2-abstract-full" style="display: none;"> We report a new precision measurement of the dc Stark shift of the $6s\hspace{1mm} ^2S_{1/2} \rightarrow 7s\hspace{1mm}^2S_{1/2}$ transition in atomic cesium-133. Our result is 0.72246 (29) $\textrm{Hz}(\textrm{V}/\textrm{cm})^{-2}$. This result differs from a previous measurement of the Stark shift by $\sim$0.5\%. We use this value to recalculate the magnitude of the reduced dipole matrix elements $\langle7s ||r||7p_{j}\rangle$, as well as the vector transition polarizability for the $6s \rightarrow 7s$ transition, $\tilde尾 = 27.043 \: (36) \ a_0^3$. This determination helps resolve a critical discrepancy between two techniques for determining the vector polarizability. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.09169v2-abstract-full').style.display = 'none'; document.getElementById('2311.09169v2-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 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">5 pages, 3 figures, 3 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.08142">arXiv:2209.08142</a> <span> [<a href="https://arxiv.org/pdf/2209.08142">pdf</a>, <a href="https://arxiv.org/format/2209.08142">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.107.012807">10.1103/PhysRevA.107.012807 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the hyperfine coupling constants and absolute energies of the $8p \ ^2P_{1/2}$ and $8p \ ^2P_{3/2}$ levels in atomic cesium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quirk%2C+J">Jonah Quirk</a>, <a href="/search/physics?searchtype=author&query=Sherman%2C+L">Liam Sherman</a>, <a href="/search/physics?searchtype=author&query=Damitz%2C+A">Amy Damitz</a>, <a href="/search/physics?searchtype=author&query=Tanner%2C+C">Carol Tanner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="2209.08142v1-abstract-short" style="display: inline;"> We report measurements of the hyperfine coupling constant for the $8p \ ^2P_{1/2}$ level of atomic cesium, $^{133}$Cs, with a relative uncertainty of $\sim$0.019\%. Our result is $A = 42.933 \: (8)$ MHz, in good agreement with recent theoretical results. We also examine the hyperfine structure of the $8p \ ^2P_{3/2}$ state, and derive new values for the state energies of the $8p \ ^2P_{1/2}$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08142v1-abstract-full').style.display = 'inline'; document.getElementById('2209.08142v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.08142v1-abstract-full" style="display: none;"> We report measurements of the hyperfine coupling constant for the $8p \ ^2P_{1/2}$ level of atomic cesium, $^{133}$Cs, with a relative uncertainty of $\sim$0.019\%. Our result is $A = 42.933 \: (8)$ MHz, in good agreement with recent theoretical results. We also examine the hyperfine structure of the $8p \ ^2P_{3/2}$ state, and derive new values for the state energies of the $8p \ ^2P_{1/2}$ and $8p \ ^2P_{3/2}$ states of cesium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.08142v1-abstract-full').style.display = 'none'; document.getElementById('2209.08142v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 7 figures, 5 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.00755">arXiv:2201.00755</a> <span> [<a href="https://arxiv.org/pdf/2201.00755">pdf</a>, <a href="https://arxiv.org/format/2201.00755">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.105.022819">10.1103/PhysRevA.105.022819 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the hyperfine coupling constants and absolute energies of the $12s \ ^2S_{1/2}$, $13s \ ^2S_{1/2}$, and $11d \ ^2D_{J}$ levels in atomic cesium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quirk%2C+J+A">Jonah A. Quirk</a>, <a href="/search/physics?searchtype=author&query=Damitz%2C+A">Amy Damitz</a>, <a href="/search/physics?searchtype=author&query=Tanner%2C+C+E">Carol E. Tanner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="2201.00755v1-abstract-short" style="display: inline;"> We report measurements of the absolute energies of the hyperfine components of the $12s \ ^2S_{1/2}$ and $13s \ ^2S_{1/2}$ levels of atomic cesium, $^{133}$Cs. Using the frequency difference between these components, we determine the hyperfine coupling constants for these states, and report these values with a relative uncertainty of $\sim$0.06 %. We also examine the hyperfine structure of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.00755v1-abstract-full').style.display = 'inline'; document.getElementById('2201.00755v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.00755v1-abstract-full" style="display: none;"> We report measurements of the absolute energies of the hyperfine components of the $12s \ ^2S_{1/2}$ and $13s \ ^2S_{1/2}$ levels of atomic cesium, $^{133}$Cs. Using the frequency difference between these components, we determine the hyperfine coupling constants for these states, and report these values with a relative uncertainty of $\sim$0.06 %. We also examine the hyperfine structure of the $11d \ ^2D_{J}$ ($J=3/2, 5/2$) states, and resolve the sign ambiguity of the hyperfine coupling constants from previous measurements of these states. We also derive new, high precision values for the state energies of the $12s \ ^2S_{1/2}$, $13s \ ^2S_{1/2}$ and $11d \ ^2D_{J}$ states of cesium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.00755v1-abstract-full').style.display = 'none'; document.getElementById('2201.00755v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">8 pages, 7 figures, 4 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2110.10228">arXiv:2110.10228</a> <span> [<a href="https://arxiv.org/pdf/2110.10228">pdf</a>, <a href="https://arxiv.org/format/2110.10228">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> <p class="title is-5 mathjax"> A Measurement of Proton, Deuteron, Triton and Alpha Particle Emission after Nuclear Muon Capture on Al, Si and Ti with the AlCap Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=AlCap+Collaboration"> AlCap Collaboration</a>, <a href="/search/physics?searchtype=author&query=Edmonds%2C+A">Andrew Edmonds</a>, <a href="/search/physics?searchtype=author&query=Quirk%2C+J">John Quirk</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+M">Ming-Liang Wong</a>, <a href="/search/physics?searchtype=author&query=Alexander%2C+D">Damien Alexander</a>, <a href="/search/physics?searchtype=author&query=Bernstein%2C+R+H">Robert H. Bernstein</a>, <a href="/search/physics?searchtype=author&query=Daniel%2C+A">Aji Daniel</a>, <a href="/search/physics?searchtype=author&query=Diociaiuti%2C+E">Eleonora Diociaiuti</a>, <a href="/search/physics?searchtype=author&query=Donghia%2C+R">Raffaella Donghia</a>, <a href="/search/physics?searchtype=author&query=Gillies%2C+E+L">Ewen L. Gillies</a>, <a href="/search/physics?searchtype=author&query=Hungerford%2C+E+V">Ed V. Hungerford</a>, <a href="/search/physics?searchtype=author&query=Kammel%2C+P">Peter Kammel</a>, <a href="/search/physics?searchtype=author&query=Krikler%2C+B+E">Benjamin E. Krikler</a>, <a href="/search/physics?searchtype=author&query=Kuno%2C+Y">Yoshitaka Kuno</a>, <a href="/search/physics?searchtype=author&query=Lancaster%2C+M">Mark Lancaster</a>, <a href="/search/physics?searchtype=author&query=Litchfield%2C+R+P">R. Phillip Litchfield</a>, <a href="/search/physics?searchtype=author&query=Miller%2C+J+P">James P. Miller</a>, <a href="/search/physics?searchtype=author&query=Palladino%2C+A">Anthony Palladino</a>, <a href="/search/physics?searchtype=author&query=Repond%2C+J">Jose Repond</a>, <a href="/search/physics?searchtype=author&query=Sato%2C+A">Akira Sato</a>, <a href="/search/physics?searchtype=author&query=Sarra%2C+I">Ivano Sarra</a>, <a href="/search/physics?searchtype=author&query=Soleti%2C+S+R">Stefano Roberto Soleti</a>, <a href="/search/physics?searchtype=author&query=Tishchenko%2C+V">Vladimir Tishchenko</a>, <a href="/search/physics?searchtype=author&query=Tran%2C+N+H">Nam H. Tran</a>, <a href="/search/physics?searchtype=author&query=Uchida%2C+Y">Yoshi Uchida</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2110.10228v3-abstract-short" style="display: inline;"> Heavy charged particles after nuclear muon capture are an important nuclear physics background to the muon-to-electron conversion experiments Mu2e and COMET, which will search for charged lepton flavor violation at an unprecedented level of sensitivity. The AlCap experiment measured the yield and energy spectra of protons, deuterons, tritons, and alpha particles emitted after the nuclear capture o… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.10228v3-abstract-full').style.display = 'inline'; document.getElementById('2110.10228v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2110.10228v3-abstract-full" style="display: none;"> Heavy charged particles after nuclear muon capture are an important nuclear physics background to the muon-to-electron conversion experiments Mu2e and COMET, which will search for charged lepton flavor violation at an unprecedented level of sensitivity. The AlCap experiment measured the yield and energy spectra of protons, deuterons, tritons, and alpha particles emitted after the nuclear capture of muons stopped in Al, Si, and Ti in the low energy range relevant for the muon-to-electron conversion experiments. Individual charged particle types were identified in layered silicon detector packages and their initial energy distributions were unfolded from the observed energy spectra. Detailed information on yields and energy spectra for all observed nuclei are presented in the paper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2110.10228v3-abstract-full').style.display = 'none'; document.getElementById('2110.10228v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 April, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 19 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/1901.00480">arXiv:1901.00480</a> <span> [<a href="https://arxiv.org/pdf/1901.00480">pdf</a>, <a href="https://arxiv.org/format/1901.00480">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.99.032504">10.1103/PhysRevA.99.032504 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Electric dipole matrix elements for the $6p\ ^2P_J \rightarrow 7s\ ^2S_{1/2}$ transition in atomic cesium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Toh%2C+G">George Toh</a>, <a href="/search/physics?searchtype=author&query=Damitz%2C+A">Amy Damitz</a>, <a href="/search/physics?searchtype=author&query=Glotzbach%2C+N">Nathan Glotzbach</a>, <a href="/search/physics?searchtype=author&query=Quirk%2C+J">Jonah Quirk</a>, <a href="/search/physics?searchtype=author&query=Stevenson%2C+I+C">I. C. Stevenson</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J">J. Choi</a>, <a href="/search/physics?searchtype=author&query=Safronova%2C+M+S">M. S. Safronova</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="1901.00480v1-abstract-short" style="display: inline;"> We report a measurement of the ratio of electric dipole transition matrix elements of cesium for the $6p\,^2P_{1/2} \rightarrow 7s\,^2S_{1/2}$ and $6p\,^2P_{3/2} \rightarrow 7s\,^2S_{1/2}$ transitions. We determine this ratio of matrix elements through comparisons of two-color, two-photon excitation rates of the $7s\,^2S_{1/2}$ state using laser beams with polarizations parallel to one another vs.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.00480v1-abstract-full').style.display = 'inline'; document.getElementById('1901.00480v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.00480v1-abstract-full" style="display: none;"> We report a measurement of the ratio of electric dipole transition matrix elements of cesium for the $6p\,^2P_{1/2} \rightarrow 7s\,^2S_{1/2}$ and $6p\,^2P_{3/2} \rightarrow 7s\,^2S_{1/2}$ transitions. We determine this ratio of matrix elements through comparisons of two-color, two-photon excitation rates of the $7s\,^2S_{1/2}$ state using laser beams with polarizations parallel to one another vs.\ perpendicular to one another. Our result of $R \equiv \langle 7s\ ^2S_{1/2} || r || 6p\ ^2P_{3/2} \rangle / \langle 7s\ ^2S_{1/2} || r || 6p\ ^2P_{1/2} \rangle = 1.5272 \ (17)$ is in excellent agreement with a theoretical prediction of $R=1.5270 \ (27)$. Moreover, the accuracy of the experimental ratio is sufficiently high to differentiate between various theoretical approaches. To our knowledge, there are no prior experimental measurements of $R$. Combined with our recent determination of the lifetime of the $7s\,^2S_{1/2}$ state, we determine reduced matrix elements for these two transitions, $\langle 7s\ ^2S_{1/2} || r || 6p\ ^2P_{3/2} \rangle = -6.489 \ (5) \ a_0$ and $\langle 7s\ ^2S_{1/2} || r || 6p\ ^2P_{1/2} \rangle = -4.249 \ (4) \ a_0$. These matrix elements are also in excellent agreement with theoretical calculations. These measurements improve knowledge of Cs properties needed for parity violation studies and provide benchmarks for tests of high-precision theory. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.00480v1-abstract-full').style.display = 'none'; document.getElementById('1901.00480v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">10 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. A 99, 032504 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.00339">arXiv:1803.00339</a> <span> [<a href="https://arxiv.org/pdf/1803.00339">pdf</a>, <a href="https://arxiv.org/format/1803.00339">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.97.052507">10.1103/PhysRevA.97.052507 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the lifetime of the $7s^2S_{1/2} $ state in atomic cesium using asynchronous gated detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Toh%2C+G">George Toh</a>, <a href="/search/physics?searchtype=author&query=Jaramillo-Villegas%2C+J+A">Jose A. Jaramillo-Villegas</a>, <a href="/search/physics?searchtype=author&query=Glotzbach%2C+N">Nathan Glotzbach</a>, <a href="/search/physics?searchtype=author&query=Quirk%2C+J">Jonah Quirk</a>, <a href="/search/physics?searchtype=author&query=Stevenson%2C+I+C">Ian C. Stevenson</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+J">J. Choi</a>, <a href="/search/physics?searchtype=author&query=Weiner%2C+A+M">Andrew M. Weiner</a>, <a href="/search/physics?searchtype=author&query=Elliott%2C+D+S">D. S. Elliott</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="1803.00339v2-abstract-short" style="display: inline;"> We report a measurement of the lifetime of the cesium $7s\,^2S_{1/2}$ state using time-correlated single-photon counting spectroscopy in a vapor cell. We excite the atoms using a Doppler-free two-photon transition from the $6s\,^2S_{1/2}$ ground state, and detect the 1.47$渭$m photons from the spontaneous decay of the $7s\,^2S_{1/2}$ to the $6p\,^2P_{3/2}$ state. We use a gated single photon detect… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00339v2-abstract-full').style.display = 'inline'; document.getElementById('1803.00339v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.00339v2-abstract-full" style="display: none;"> We report a measurement of the lifetime of the cesium $7s\,^2S_{1/2}$ state using time-correlated single-photon counting spectroscopy in a vapor cell. We excite the atoms using a Doppler-free two-photon transition from the $6s\,^2S_{1/2}$ ground state, and detect the 1.47$渭$m photons from the spontaneous decay of the $7s\,^2S_{1/2}$ to the $6p\,^2P_{3/2}$ state. We use a gated single photon detector in an asynchronous mode, allowing us to capture the fluorescence profile for a window much larger than the detector gate length. Analysis of the exponential decay of the photon count yields a $7s\,^2S_{1/2}$ lifetime of 48.28$\pm$0.07ns, an uncertainty of 0.14%. These measurements provide sensitive tests of theoretical models of the Cs atom, which play a central role in parity violation measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00339v2-abstract-full').style.display = 'none'; document.getElementById('1803.00339v2-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 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">5 pages, 5 figures, 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. A 97, 052507 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.02599">arXiv:1802.02599</a> <span> [<a href="https://arxiv.org/pdf/1802.02599">pdf</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> <p class="title is-5 mathjax"> Expression of Interest for Evolution of the Mu2e Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abusalma%2C+F">F. Abusalma</a>, <a href="/search/physics?searchtype=author&query=Ambrose%2C+D">D. Ambrose</a>, <a href="/search/physics?searchtype=author&query=Artikov%2C+A">A. Artikov</a>, <a href="/search/physics?searchtype=author&query=Bernstein%2C+R">R. Bernstein</a>, <a href="/search/physics?searchtype=author&query=Blazey%2C+G+C">G. C. Blazey</a>, <a href="/search/physics?searchtype=author&query=Bloise%2C+C">C. Bloise</a>, <a href="/search/physics?searchtype=author&query=Boi%2C+S">S. Boi</a>, <a href="/search/physics?searchtype=author&query=Bolton%2C+T">T. Bolton</a>, <a href="/search/physics?searchtype=author&query=Bono%2C+J">J. Bono</a>, <a href="/search/physics?searchtype=author&query=Bonventre%2C+R">R. Bonventre</a>, <a href="/search/physics?searchtype=author&query=Bowring%2C+D">D. Bowring</a>, <a href="/search/physics?searchtype=author&query=Brown%2C+D">D. Brown</a>, <a href="/search/physics?searchtype=author&query=Brown%2C+D">D. Brown</a>, <a href="/search/physics?searchtype=author&query=Byrum%2C+K">K. Byrum</a>, <a href="/search/physics?searchtype=author&query=Campbell%2C+M">M. Campbell</a>, <a href="/search/physics?searchtype=author&query=Caron%2C+J+-">J. -F. Caron</a>, <a href="/search/physics?searchtype=author&query=Cervelli%2C+F">F. Cervelli</a>, <a href="/search/physics?searchtype=author&query=Chokheli%2C+D">D. Chokheli</a>, <a href="/search/physics?searchtype=author&query=Ciampa%2C+K">K. Ciampa</a>, <a href="/search/physics?searchtype=author&query=Ciolini%2C+R">R. Ciolini</a>, <a href="/search/physics?searchtype=author&query=Coleman%2C+R">R. Coleman</a>, <a href="/search/physics?searchtype=author&query=Cronin-Hennessy%2C+D">D. Cronin-Hennessy</a>, <a href="/search/physics?searchtype=author&query=Culbertson%2C+R">R. Culbertson</a>, <a href="/search/physics?searchtype=author&query=Cummings%2C+M+A">M. A. Cummings</a>, <a href="/search/physics?searchtype=author&query=Daniel%2C+A">A. Daniel</a> , et al. (103 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1802.02599v1-abstract-short" style="display: inline;"> We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron conversion by one order of magnitude beyond the Mu2e experiment, providing the deepest probe of charged lepton flavor violation in the fores… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02599v1-abstract-full').style.display = 'inline'; document.getElementById('1802.02599v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.02599v1-abstract-full" style="display: none;"> We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron conversion by one order of magnitude beyond the Mu2e experiment, providing the deepest probe of charged lepton flavor violation in the foreseeable future. Mu2e-II will use as much of the Mu2e infrastructure as possible, providing, where required, improvements to the Mu2e apparatus to accommodate the increased beam intensity and cope with the accompanying increase in backgrounds. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.02599v1-abstract-full').style.display = 'none'; document.getElementById('1802.02599v1-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 February, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 4 figures, 1 table; Submitted to the Fermilab Physics Advisory Committee</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Fermilab-FN-1052 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1501.05241">arXiv:1501.05241</a> <span> [<a href="https://arxiv.org/pdf/1501.05241">pdf</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> <p class="title is-5 mathjax"> Mu2e Technical Design Report </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bartoszek%2C+L">L. Bartoszek</a>, <a href="/search/physics?searchtype=author&query=Barnes%2C+E">E. Barnes</a>, <a href="/search/physics?searchtype=author&query=Miller%2C+J+P">J. P. Miller</a>, <a href="/search/physics?searchtype=author&query=Mott%2C+J">J. Mott</a>, <a href="/search/physics?searchtype=author&query=Palladino%2C+A">A. Palladino</a>, <a href="/search/physics?searchtype=author&query=Quirk%2C+J">J. Quirk</a>, <a href="/search/physics?searchtype=author&query=Roberts%2C+B+L">B. L. Roberts</a>, <a href="/search/physics?searchtype=author&query=Crnkovic%2C+J">J. Crnkovic</a>, <a href="/search/physics?searchtype=author&query=Polychronakos%2C+V">V. Polychronakos</a>, <a href="/search/physics?searchtype=author&query=Tishchenko%2C+V">V. Tishchenko</a>, <a href="/search/physics?searchtype=author&query=Yamin%2C+P">P. Yamin</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+C+-">C. -h. Cheng</a>, <a href="/search/physics?searchtype=author&query=Echenard%2C+B">B. Echenard</a>, <a href="/search/physics?searchtype=author&query=Flood%2C+K">K. Flood</a>, <a href="/search/physics?searchtype=author&query=Hitlin%2C+D+G">D. G. Hitlin</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+J+H">J. H. Kim</a>, <a href="/search/physics?searchtype=author&query=Miyashita%2C+T+S">T. S. Miyashita</a>, <a href="/search/physics?searchtype=author&query=Porter%2C+F+C">F. C. Porter</a>, <a href="/search/physics?searchtype=author&query=R%C3%B6hrken%2C+M">M. R枚hrken</a>, <a href="/search/physics?searchtype=author&query=Trevor%2C+J">J. Trevor</a>, <a href="/search/physics?searchtype=author&query=Zhu%2C+R+-">R. -Y. Zhu</a>, <a href="/search/physics?searchtype=author&query=Heckmaier%2C+E">E. Heckmaier</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+T+I">T. I. Kang</a>, <a href="/search/physics?searchtype=author&query=Lim%2C+G">G. Lim</a>, <a href="/search/physics?searchtype=author&query=Molzon%2C+W">W. Molzon</a> , et al. (238 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="1501.05241v2-abstract-short" style="display: inline;"> The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- N with a sensitivity approximately four orders of magnitude better than the current world's best limits for this process. The experiment's sensitivity offers discovery potential over a wide array of new physics models and probes mass scales well beyond the reach of the L… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.05241v2-abstract-full').style.display = 'inline'; document.getElementById('1501.05241v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1501.05241v2-abstract-full" style="display: none;"> The Mu2e experiment at Fermilab will search for charged lepton flavor violation via the coherent conversion process mu- N --> e- N with a sensitivity approximately four orders of magnitude better than the current world's best limits for this process. The experiment's sensitivity offers discovery potential over a wide array of new physics models and probes mass scales well beyond the reach of the LHC. We describe herein the preliminary design of the proposed Mu2e experiment. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2 approval. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1501.05241v2-abstract-full').style.display = 'none'; document.getElementById('1501.05241v2-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 March, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">compressed file, 888 pages, 621 figures, 126 tables; full resolution available at http://mu2e.fnal.gov; corrected typo in background summary, Table 3.4</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Fermilab-TM-2594 , Fermilab-DESIGN-2014-1 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 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