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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/2405.07303">arXiv:2405.07303</a> <span> [<a href="https://arxiv.org/pdf/2405.07303">pdf</a>, <a href="https://arxiv.org/format/2405.07303">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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"> Search for solar axions by Primakoff effect with the full dataset of the CDEX-1B Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+S+K">S. K. Liu</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+J+R">J. R. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</a> , et al. (61 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="2405.07303v1-abstract-short" style="display: inline;"> We present the first limit on $g_{A纬}$ coupling constant using the Bragg-Primakoff conversion based on an exposure of 1107.5 kg days of data from the CDEX-1B experiment at the China Jinping Underground Laboratory. The data are consistent with the null signal hypothesis, and no excess signals are observed. Limits of the coupling $g_{A纬}<2.08\times10^{-9}$ GeV$^{-1}$ (95\% C.L.) are derived for axio… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07303v1-abstract-full').style.display = 'inline'; document.getElementById('2405.07303v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.07303v1-abstract-full" style="display: none;"> We present the first limit on $g_{A纬}$ coupling constant using the Bragg-Primakoff conversion based on an exposure of 1107.5 kg days of data from the CDEX-1B experiment at the China Jinping Underground Laboratory. The data are consistent with the null signal hypothesis, and no excess signals are observed. Limits of the coupling $g_{A纬}<2.08\times10^{-9}$ GeV$^{-1}$ (95\% C.L.) are derived for axions with mass up to 100 eV/$c^2$. Within the hadronic model of KSVZ, our results exclude axion mass $>5.3~\rm{eV}/c^2$ at 95\% C.L. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.07303v1-abstract-full').style.display = 'none'; document.getElementById('2405.07303v1-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 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">7 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/2404.09793">arXiv:2404.09793</a> <span> [<a href="https://arxiv.org/pdf/2404.09793">pdf</a>, <a href="https://arxiv.org/format/2404.09793">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> First Search for Light Fermionic Dark Matter Absorption on Electrons Using Germanium Detector in CDEX-10 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Liu%2C+J+X">J. X. Liu</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+J+R">J. R. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</a> , et al. (61 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="2404.09793v1-abstract-short" style="display: inline;"> We present the first results of the search for sub-MeV fermionic dark matter absorbed by electron targets of Germanium using the 205.4~kg$\cdot$day data collected by the CDEX-10 experiment, with the analysis threshold of 160~eVee. No significant dark matter (DM) signals over the background are observed. Results are presented as limits on the cross section of DM--electron interaction. We present ne… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.09793v1-abstract-full').style.display = 'inline'; document.getElementById('2404.09793v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.09793v1-abstract-full" style="display: none;"> We present the first results of the search for sub-MeV fermionic dark matter absorbed by electron targets of Germanium using the 205.4~kg$\cdot$day data collected by the CDEX-10 experiment, with the analysis threshold of 160~eVee. No significant dark matter (DM) signals over the background are observed. Results are presented as limits on the cross section of DM--electron interaction. We present new constraints of cross section in the DM range of 0.1--10 keV/$c^2$ for vector and axial-vector interaction. The upper limit on the cross section is set to be $\rm 5.5\times10^{-46}~cm^2$ for vector interaction, and $\rm 1.8\times10^{-46}~cm^2$ for axial-vector interaction at DM mass of 5 keV/$c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.09793v1-abstract-full').style.display = 'none'; document.getElementById('2404.09793v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 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">6 pages, 4 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/2403.20276">arXiv:2403.20276</a> <span> [<a href="https://arxiv.org/pdf/2403.20276">pdf</a>, <a href="https://arxiv.org/format/2403.20276">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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"> Constraints on the Blazar-Boosted Dark Matter from the CDEX-10 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Xu%2C+R">R. Xu</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</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="2403.20276v1-abstract-short" style="display: inline;"> We report new constraints on light dark matter (DM) boosted by blazars using the 205.4 kg day data from the CDEX-10 experiment located at the China Jinping Underground Laboratory. Two representative blazars, TXS 0506+56 and BL Lacertae are studied. The results derived from TXS 0506+56 exclude DM-nucleon elastic scattering cross sections from $4.6\times 10^{-33}\ \rm cm^2$ to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.20276v1-abstract-full').style.display = 'inline'; document.getElementById('2403.20276v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.20276v1-abstract-full" style="display: none;"> We report new constraints on light dark matter (DM) boosted by blazars using the 205.4 kg day data from the CDEX-10 experiment located at the China Jinping Underground Laboratory. Two representative blazars, TXS 0506+56 and BL Lacertae are studied. The results derived from TXS 0506+56 exclude DM-nucleon elastic scattering cross sections from $4.6\times 10^{-33}\ \rm cm^2$ to $1\times10^{-26}\ \rm cm^2$ for DM masses between 10 keV and 1 GeV, and the results derived from BL Lacertae exclude DM-nucleon elastic scattering cross sections from $2.4\times 10^{-34}\ \rm cm^2$ to $1\times10^{-26}\ \rm cm^2$ for the same range of DM masses. The constraints correspond to the best sensitivities among solid-state detector experiments in the sub-MeV mass range. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.20276v1-abstract-full').style.display = 'none'; document.getElementById('2403.20276v1-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 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">7 pages, 4 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/2403.20263">arXiv:2403.20263</a> <span> [<a href="https://arxiv.org/pdf/2403.20263">pdf</a>, <a href="https://arxiv.org/format/2403.20263">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/10.1007/s11433-024-2446-2">10.1007/s11433-024-2446-2 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing Dark Matter Particles from Evaporating Primordial Black Holes via Electron Scattering in the CDEX-10 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+Z+H">Z. H. Zhang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</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="2403.20263v2-abstract-short" style="display: inline;"> Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as ``$蠂$") has been found in DM direct detection (DD) experiments to date. There is a novel concept of detecting $蠂$ from evaporating primordial black holes (PBHs). We search for $蠂$ emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.20263v2-abstract-full').style.display = 'inline'; document.getElementById('2403.20263v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.20263v2-abstract-full" style="display: none;"> Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as ``$蠂$") has been found in DM direct detection (DD) experiments to date. There is a novel concept of detecting $蠂$ from evaporating primordial black holes (PBHs). We search for $蠂$ emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range from 1$\times$10$^{15}$ to 7$\times$10$^{16}$ g under the current limits of PBH abundance $f_{PBH}$. Using 205.4 kg$\cdot$day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory, we exclude the $蠂$--electron ($蠂$--$e$) elastic-scattering cross section $蟽_{蠂e} \sim 5\times10^{-29}$ cm$^2$ for $蠂$ with a mass $m_蠂\lesssim$ 0.1 keV from our results. With the higher radiation background but lower energy threshold (160 eV), CDEX-10 fill a part of the gap in the previous work. If ($m_蠂$, $蟽_{蠂e}$) can be determined in the future, DD experiments are expected to impose strong constraints on $f_{PBH}$ for large $M_{PBH}$s. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.20263v2-abstract-full').style.display = 'none'; document.getElementById('2403.20263v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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, 3 tables. Version updated to match SCPMA version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci. China Phys. Mech. Astron. 67, 101011 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.14982">arXiv:2309.14982</a> <span> [<a href="https://arxiv.org/pdf/2309.14982">pdf</a>, <a href="https://arxiv.org/format/2309.14982">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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.132.171001">10.1103/PhysRevLett.132.171001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental Limits on Solar Reflected Dark Matter with a New Approach on Accelerated-Dark-Matter-Electron Analysis in Semiconductors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+Z+Y">Z. Y. Zhang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</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="2309.14982v3-abstract-short" style="display: inline;"> Recently a dark matter-electron (DM-electron) paradigm has drawn much attention. Models beyond the standard halo model describing DM accelerated by high energy celestial bodies are under intense examination as well. In this Letter, a velocity components analysis (VCA) method dedicated to swift analysis of accelerated DM-electron interactions via semiconductor detectors is proposed and the first HP… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14982v3-abstract-full').style.display = 'inline'; document.getElementById('2309.14982v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.14982v3-abstract-full" style="display: none;"> Recently a dark matter-electron (DM-electron) paradigm has drawn much attention. Models beyond the standard halo model describing DM accelerated by high energy celestial bodies are under intense examination as well. In this Letter, a velocity components analysis (VCA) method dedicated to swift analysis of accelerated DM-electron interactions via semiconductor detectors is proposed and the first HPGe detector-based accelerated DM-electron analysis is realized. Utilizing the method, the first germanium based constraint on sub-GeV solar reflected DM-electron interaction is presented with the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. In the heavy mediator scenario, our result excels in the mass range of 5$-$15 keV/$c^2$, achieving a 3 orders of magnitude improvement comparing with previous semiconductor experiments. In the light mediator scenario, the strongest laboratory constraint for DM lighter than 0.1 MeV/$c^2$ is presented. The result proves the feasibility and demonstrates the vast potential of the VCA technique in future accelerated DM-electron analyses with semiconductor detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.14982v3-abstract-full').style.display = 'none'; document.getElementById('2309.14982v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">7 pages, 4 figures. Version updated to match PRL version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 132, 171001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.01843">arXiv:2309.01843</a> <span> [<a href="https://arxiv.org/pdf/2309.01843">pdf</a>, <a href="https://arxiv.org/format/2309.01843">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="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/10.1088/1475-7516/2024/07/009">10.1088/1475-7516/2024/07/009 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Projected WIMP sensitivity of the CDEX-50 dark matter experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+T">T. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+L">L. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</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="2309.01843v2-abstract-short" style="display: inline;"> CDEX-50 is a next-generation project of the China Dark Matter Experiment (CDEX) that aims to search for dark matter using a 50-kg germanium detector array. This paper comprises a thorough summary of the CDEX-50 dark matter experiment, including an investigation of potential background sources and the development of a background model. Based on the baseline model, the projected sensitivity of weakl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01843v2-abstract-full').style.display = 'inline'; document.getElementById('2309.01843v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.01843v2-abstract-full" style="display: none;"> CDEX-50 is a next-generation project of the China Dark Matter Experiment (CDEX) that aims to search for dark matter using a 50-kg germanium detector array. This paper comprises a thorough summary of the CDEX-50 dark matter experiment, including an investigation of potential background sources and the development of a background model. Based on the baseline model, the projected sensitivity of weakly interacting massive particle (WIMP) is also presented. The expected background level within the energy region of interest, set to 2--2.5 keVee, is $\sim$0.01 counts keVee$^{-1}$ kg$^{-1}$ day$^{-1}$. At 90\% confidence level, the expected sensitivity to spin-independent WIMP-nucleon couplings is estimated to reach a cross-section of 5.1 $\times$ 10$^{-45}$ cm$^{2}$ for a WIMP mass of 5 GeV/c$^{2}$ with an exposure objective of 150 kg$\cdot$year and an analysis threshold of 160 eVee. This science goal will correspond to the most sensitive results for WIMPs with a mass of 2.2--8 GeV/c$^{2}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.01843v2-abstract-full').style.display = 'none'; document.getElementById('2309.01843v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">12 pages, 11 figures. Version updated to match JCAP version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JCAP 07 (2024) 009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.14895">arXiv:2305.14895</a> <span> [<a href="https://arxiv.org/pdf/2305.14895">pdf</a>, <a href="https://arxiv.org/format/2305.14895">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 Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1674-4527/acd593">10.1088/1674-4527/acd593 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ling%2C+Z+X">Z. X. Ling</a>, <a href="/search/physics?searchtype=author&query=Sun%2C+X+J">X. J. Sun</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+C">C. Zhang</a>, <a href="/search/physics?searchtype=author&query=Sun%2C+S+L">S. L. Sun</a>, <a href="/search/physics?searchtype=author&query=Jin%2C+G">G. Jin</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+S+N">S. N. Zhang</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+X+F">X. F. Zhang</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+B">J. B. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+F+S">F. S. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+F">Y. F. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+Z+W">Z. W. Cheng</a>, <a href="/search/physics?searchtype=author&query=Fu%2C+W">W. Fu</a>, <a href="/search/physics?searchtype=author&query=Han%2C+Y+X">Y. X. Han</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J+F">J. F. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y">Y. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Z+D">Z. D. Li</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+P+R">P. R. Liu</a>, <a href="/search/physics?searchtype=author&query=Lv%2C+Y+H">Y. H. Lv</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+X+H">X. H. Ma</a>, <a href="/search/physics?searchtype=author&query=Tang%2C+Y+J">Y. J. Tang</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+C+B">C. B. Wang</a>, <a href="/search/physics?searchtype=author&query=Xie%2C+R+J">R. J. Xie</a>, <a href="/search/physics?searchtype=author&query=Xue%2C+Y+L">Y. L. Xue</a>, <a href="/search/physics?searchtype=author&query=Yan%2C+A+L">A. L. Yan</a> , et al. (101 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="2305.14895v1-abstract-short" style="display: inline;"> The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe (EP) mission, was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on 27 July 2022. In this paper, we introduce the design and on-ground test results of the LEIA instrument. Using state-of-the-art Micro-Pore Optics (MPO), a wide field-of-view (Fo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.14895v1-abstract-full').style.display = 'inline'; document.getElementById('2305.14895v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.14895v1-abstract-full" style="display: none;"> The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe (EP) mission, was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on 27 July 2022. In this paper, we introduce the design and on-ground test results of the LEIA instrument. Using state-of-the-art Micro-Pore Optics (MPO), a wide field-of-view (FoV) of 346 square degrees (18.6 degrees * 18.6 degrees) of the X-ray imager is realized. An optical assembly composed of 36 MPO chips is used to focus incident X-ray photons, and four large-format complementary metal-oxide semiconductor (CMOS) sensors, each of 6 cm * 6 cm, are used as the focal plane detectors. The instrument has an angular resolution of 4 - 8 arcmin (in FWHM) for the central focal spot of the point spread function, and an effective area of 2 - 3 cm2 at 1 keV in essentially all the directions within the field of view. The detection passband is 0.5 - 4 keV in the soft X-rays and the sensitivity is 2 - 3 * 10-11 erg s-1 cm-2 (about 1 mini-Crab) at 1,000 second observation. The total weight of LEIA is 56 kg and the power is 85 W. The satellite, with a design lifetime of 2 years, operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 minutes. LEIA is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOS sensors for X-ray observation, and by optimizing the working setups of the instrumental parameters. In addition, LEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft X-ray band, albeit limited useful observing time available. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.14895v1-abstract-full').style.display = 'none'; document.getElementById('2305.14895v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 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">Accepted by RAA</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.00894">arXiv:2305.00894</a> <span> [<a href="https://arxiv.org/pdf/2305.00894">pdf</a>, <a href="https://arxiv.org/format/2305.00894">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/10.1088/1674-1137/ad597b">10.1088/1674-1137/ad597b <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Searching for $^{76}$Ge neutrinoless double beta decay with the CDEX-1B experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+B+T">B. T. Zhang</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+J+Z">J. Z. Wang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a> , et al. (60 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="2305.00894v3-abstract-short" style="display: inline;"> We operated a p-type point contact high purity germanium (PPCGe) detector (CDEX-1B, 1.008 kg) in the China Jinping Underground Laboratory (CJPL) for 500.3 days to search for neutrinoless double beta ($0谓尾尾$) decay of $^{76}$Ge. A total of 504.3 kg$\cdot$day effective exposure data was accumulated. The anti-coincidence and the multi/single-site event (MSE/SSE) discrimination methods were used to su… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.00894v3-abstract-full').style.display = 'inline'; document.getElementById('2305.00894v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.00894v3-abstract-full" style="display: none;"> We operated a p-type point contact high purity germanium (PPCGe) detector (CDEX-1B, 1.008 kg) in the China Jinping Underground Laboratory (CJPL) for 500.3 days to search for neutrinoless double beta ($0谓尾尾$) decay of $^{76}$Ge. A total of 504.3 kg$\cdot$day effective exposure data was accumulated. The anti-coincidence and the multi/single-site event (MSE/SSE) discrimination methods were used to suppress the background in the energy region of interest (ROI, 1989$-$2089 keV for this work) with a factor of 23. A background level of 0.33 counts/(keV$\cdot$kg$\cdot$yr) was realized. The lower limit on the half life of $^{76}$Ge $0谓尾尾$ decay was constrained as $T_{1/2}^{0谓}\ > \ {1.0}\times 10^{23}\ \rm yr\ (90\% \ C.L.)$, corresponding to the upper limits on the effective Majorana neutrino mass: $\langle m_{尾尾}\rangle < $3.2$-$7.5$\ \mathrm{eV}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.00894v3-abstract-full').style.display = 'none'; document.getElementById('2305.00894v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 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">11 pages, 12 figures, 2 tables. Version updated to match CPC version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C 48, 101001 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.07978">arXiv:2303.07978</a> <span> [<a href="https://arxiv.org/pdf/2303.07978">pdf</a>, <a href="https://arxiv.org/format/2303.07978">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1088/1748-0221/18/04/P04011">10.1088/1748-0221/18/04/P04011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the Compton scattering in germanium with a p-type point-contact germanium detector for dark matter detection </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Liang%2C+Y+F">Y. F. Liang</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+S+T">S. T. Lin</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+S+K">S. K. Liu</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+L">L. Wang</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+B+T">B. T. Zhang</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="2303.07978v1-abstract-short" style="display: inline;"> Low-energy background through Compton scattering from the ambient $纬$ rays can be contaminated in direct dark matter search experiments. In this paper, we report comparable measurements on low-energy spectra via Compton scattering from several $纬$-ray sources with a p-type point-contact germanium detector. The spectra between 500 eV and 18 keV have been measured and analyzed. Moreover, the feature… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07978v1-abstract-full').style.display = 'inline'; document.getElementById('2303.07978v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.07978v1-abstract-full" style="display: none;"> Low-energy background through Compton scattering from the ambient $纬$ rays can be contaminated in direct dark matter search experiments. In this paper, we report comparable measurements on low-energy spectra via Compton scattering from several $纬$-ray sources with a p-type point-contact germanium detector. The spectra between 500 eV and 18 keV have been measured and analyzed. Moreover, the features of the electron binding effect, particularly at the edges of the K- and L-shells in the germanium atom, were observed with different gamma sources and were consistent with the models in the Geant4 simulation. An empirical background model is proposed that provides insights into understanding the low-energy background in germanium for direct dark matter experiments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.07978v1-abstract-full').style.display = 'none'; document.getElementById('2303.07978v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">7 pages, 5 figures and 2 tables; version accepted by JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.07477">arXiv:2211.07477</a> <span> [<a href="https://arxiv.org/pdf/2211.07477">pdf</a>, <a href="https://arxiv.org/format/2211.07477">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/PhysRevD.108.052006">10.1103/PhysRevD.108.052006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for boosted keV-MeV light dark matter particles from evaporating primordial black holes at the CDEX-10 experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+Z+H">Z. H. Zhang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</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="2211.07477v2-abstract-short" style="display: inline;"> We present novel constraints on boosted light dark matter particles (denoted as ``$蠂$'') from evaporating primordial black holes (PBHs) using 205.4 kg$\cdot$day data from the China Jinping Underground Laboratory's CDEX-10 p-type point contact germanium detector with a 160 eVee analysis threshold. $蠂$ from PBHs with masses ranging from 1$\times$10$^{15}$ g to 7$\times$10$^{16}$ g are searched in th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.07477v2-abstract-full').style.display = 'inline'; document.getElementById('2211.07477v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.07477v2-abstract-full" style="display: none;"> We present novel constraints on boosted light dark matter particles (denoted as ``$蠂$'') from evaporating primordial black holes (PBHs) using 205.4 kg$\cdot$day data from the China Jinping Underground Laboratory's CDEX-10 p-type point contact germanium detector with a 160 eVee analysis threshold. $蠂$ from PBHs with masses ranging from 1$\times$10$^{15}$ g to 7$\times$10$^{16}$ g are searched in this work. In the presence of PBH abundance compatible with present bounds, our result excludes the $蠂$-nucleon elastic-scattering cross section region from 3.4$\times$10$^{-32}$ cm$^{2}$ to 2.3$\times$10$^{-29}$ cm$^{2}$ for $蠂$ of 1 keV to 24 MeV from PBHs with masses of 5$\times$10$^{15}$ g, as well as from 1.1$\times$10$^{-28}$ cm$^{2}$ to 7.6$\times$10$^{-28}$ cm$^{2}$ for $蠂$ of 1 keV to 0.6 MeV from PBHs with masses of 7$\times$10$^{16}$ g. If the $蠂$-nucleon elastic-scattering cross section can be determined in the future, the abundance of PBHs may be severely constrained by $蠂$ evaporation. With the lower threshold (160 eVee) of the CDEX-10 experiment compared to the previously used experiments, this work allows for a better reach at soft spectra produced by heavier PBHs, which demonstrates the vast potential of such a technical route to pursue $蠂$ from larger PBHs with a low threshold. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.07477v2-abstract-full').style.display = 'none'; document.getElementById('2211.07477v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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, 6 figures. Version updated to match PRD version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 109, 052006 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.01604">arXiv:2210.01604</a> <span> [<a href="https://arxiv.org/pdf/2210.01604">pdf</a>, <a href="https://arxiv.org/format/2210.01604">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/PhysRevD.107.112002">10.1103/PhysRevD.107.112002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for exotic interactions of solar neutrinos in the CDEX-10 experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=C.%2C+G">Greeshma C.</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a>, <a href="/search/physics?searchtype=author&query=Karmakar%2C+S">S. Karmakar</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a> , et al. (60 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="2210.01604v2-abstract-short" style="display: inline;"> We investigate exotic neutrino interactions using the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment at the China Jinping Underground Laboratory. New constraints on the mass and couplings of new gauge bosons are presented. Two nonstandard neutrino interactions are considered: a $U(1)_{B-L}$ gauge-boson-induced interaction between an active neutrino and electron/nucleus, and a dark-photon-i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.01604v2-abstract-full').style.display = 'inline'; document.getElementById('2210.01604v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.01604v2-abstract-full" style="display: none;"> We investigate exotic neutrino interactions using the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment at the China Jinping Underground Laboratory. New constraints on the mass and couplings of new gauge bosons are presented. Two nonstandard neutrino interactions are considered: a $U(1)_{B-L}$ gauge-boson-induced interaction between an active neutrino and electron/nucleus, and a dark-photon-induced interaction between a sterile neutrino and electron/nucleus via kinetic mixing with a photon. This work probes an unexplored parameter space involving sterile neutrino coupling with a dark photon. New laboratory limits are derived on dark photon masses below $1~{\rm eV}/c^{2}$ at some benchmark values of $螖m_{41}^{2}$ and $g^{\prime2}{\rm{sin}}^{2}2胃_{14}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.01604v2-abstract-full').style.display = 'none'; document.getElementById('2210.01604v2-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 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">6 pages, 4 figures. Version updated to match PRD version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 107, 112002 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2206.04128">arXiv:2206.04128</a> <span> [<a href="https://arxiv.org/pdf/2206.04128">pdf</a>, <a href="https://arxiv.org/format/2206.04128">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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.129.221301">10.1103/PhysRevLett.129.221301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on Sub-GeV Dark Matter--Electron Scattering from the CDEX-10 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Zhang%2C+Z+Y">Z. Y. Zhang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a> , et al. (60 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2206.04128v2-abstract-short" style="display: inline;"> We present improved germanium-based constraints on sub-GeV dark matter via dark matter--electron ($蠂$-$e$) scattering using the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. Using a novel calculation technique, we attain predicted $蠂$-$e$ scattering spectra observable in high-purity germanium detectors. In the heavy mediator scenario, our results achieve 3 orders of magnitude of improvem… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.04128v2-abstract-full').style.display = 'inline'; document.getElementById('2206.04128v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2206.04128v2-abstract-full" style="display: none;"> We present improved germanium-based constraints on sub-GeV dark matter via dark matter--electron ($蠂$-$e$) scattering using the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. Using a novel calculation technique, we attain predicted $蠂$-$e$ scattering spectra observable in high-purity germanium detectors. In the heavy mediator scenario, our results achieve 3 orders of magnitude of improvement for $m_蠂$ larger than 80 MeV/c$^2$ compared to previous germanium-based $蠂$-$e$ results. We also present the most stringent $蠂$-$e$ cross-section limit to date among experiments using solid-state detectors for $m_蠂$ larger than 90 MeV/c$^2$ with heavy mediators and $m_蠂$ larger than 100 MeV/c$^2$ with electric dipole coupling. The result proves the feasibility and demonstrates the vast potential of a new $蠂$-$e$ detection method with high-purity germanium detectors in ultralow radioactive background. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2206.04128v2-abstract-full').style.display = 'none'; document.getElementById('2206.04128v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 June, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 3 figures. Version updated to match PRL version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 129, 221301 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2205.10718">arXiv:2205.10718</a> <span> [<a href="https://arxiv.org/pdf/2205.10718">pdf</a>, <a href="https://arxiv.org/format/2205.10718">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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/PhysRevD.106.032012">10.1103/PhysRevD.106.032012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Neutrinoless Double-Beta Decay of $^{76}$Ge with a Natural Broad Energy Germanium Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=CDEX+collaboration"> CDEX collaboration</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=She%2C+Z">Z. She</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a> , et al. (61 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2205.10718v2-abstract-short" style="display: inline;"> A natural broad energy germanium (BEGe) detector is operated in the China Jinping Underground Laboratory (CJPL) for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0{$谓尾尾$}) decay of $^{76}$Ge. The setup of the prototype facility, characteristics of the BEGe detector, background reduction methods, and data analysis are described in this paper. A back… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10718v2-abstract-full').style.display = 'inline'; document.getElementById('2205.10718v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2205.10718v2-abstract-full" style="display: none;"> A natural broad energy germanium (BEGe) detector is operated in the China Jinping Underground Laboratory (CJPL) for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0{$谓尾尾$}) decay of $^{76}$Ge. The setup of the prototype facility, characteristics of the BEGe detector, background reduction methods, and data analysis are described in this paper. A background index of 6.4$\times$10$^{-3}$ counts/(keV$\cdot$kg$\cdot$day) is achieved and 1.86 times lower than our previous result of the CDEX-1 detector. No signal is observed with an exposure of 186.4 kg$\cdot$day, thus a limit on the half life of $^{76}$Ge 0$谓尾尾$ decay is set at T$_{1/2}^{0谓}$ $>$ 5.62$\times$10$^{22}$ yr at 90% C.L.. The limit corresponds to an effective Majorana neutrino mass in the range of 4.6 $\sim$ 10.3 eV, dependent on the nuclear matrix elements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2205.10718v2-abstract-full').style.display = 'none'; document.getElementById('2205.10718v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 May, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 15 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Physical Review D 106, 032012 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.01704">arXiv:2201.01704</a> <span> [<a href="https://arxiv.org/pdf/2201.01704">pdf</a>, <a href="https://arxiv.org/format/2201.01704">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/PhysRevD.106.052008">10.1103/PhysRevD.106.052008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on sub-GeV dark matter boosted by cosmic rays from the CDEX-10 experiment at the China Jinping Underground Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Xu%2C+R">R. Xu</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+X">X. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a> , et al. (60 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="2201.01704v3-abstract-short" style="display: inline;"> We present new constraints on light dark matter boosted by cosmic rays (CRDM) using the 205.4 kg day data of the CDEX-10 experiment conducted at the China Jinping Underground Laboratory. The Monte Carlo simulation package CJPL\_ESS was employed to evaluate the Earth shielding effect. Several key factors have been introduced and discussed in our CRDM analysis, including the contributions from heavi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.01704v3-abstract-full').style.display = 'inline'; document.getElementById('2201.01704v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.01704v3-abstract-full" style="display: none;"> We present new constraints on light dark matter boosted by cosmic rays (CRDM) using the 205.4 kg day data of the CDEX-10 experiment conducted at the China Jinping Underground Laboratory. The Monte Carlo simulation package CJPL\_ESS was employed to evaluate the Earth shielding effect. Several key factors have been introduced and discussed in our CRDM analysis, including the contributions from heavier CR nuclei than proton and helium, the inhomogeneity of CR distribution, and the impact of the form factor in the Earth attenuation calculation. Our result excludes the dark matter--nucleon elastic scattering cross-section region from $1.7\times 10^{-30}$ to $10^{-26}~\rm cm^2$ for dark matter of 10 keV$/c^2$ to 1 GeV$/c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.01704v3-abstract-full').style.display = 'none'; document.getElementById('2201.01704v3-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">v1</span> submitted 5 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">9 pages, 7 figures. Version updated to match PRD version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 106, 052008 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.11243">arXiv:2111.11243</a> <span> [<a href="https://arxiv.org/pdf/2111.11243">pdf</a>, <a href="https://arxiv.org/format/2111.11243">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/PhysRevD.105.052005">10.1103/PhysRevD.105.052005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Studies of the Earth shielding effect to direct dark matter searches at the China Jinping Underground Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Liu%2C+Z+Z">Z. Z. Liu</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Yeh%2C+C+H">C. H. Yeh</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+H+T">H. T. Jia</a> , et al. (58 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="2111.11243v2-abstract-short" style="display: inline;"> Dark matter direct detection experiments mostly operate at deep underground laboratories. It is necessary to consider shielding effect of the Earth, especially for dark matter particles interacting with a large cross section. We analyzed and simulated the Earth shielding effect for dark matter at the China Jinping Underground Laboratory (CJPL) with a simulation package, CJPL Earth Shielding Simula… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11243v2-abstract-full').style.display = 'inline'; document.getElementById('2111.11243v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.11243v2-abstract-full" style="display: none;"> Dark matter direct detection experiments mostly operate at deep underground laboratories. It is necessary to consider shielding effect of the Earth, especially for dark matter particles interacting with a large cross section. We analyzed and simulated the Earth shielding effect for dark matter at the China Jinping Underground Laboratory (CJPL) with a simulation package, CJPL Earth Shielding Simulation code (CJPL\_ESS), which is applicable to other underground locations. The further constraints on the $蠂$-N cross section exclusion regions are derived based on the studies with CDEX experiment data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.11243v2-abstract-full').style.display = 'none'; document.getElementById('2111.11243v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">8 pages, 8 figures, 2 tables. Version updated to match PRD version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 105, 052005 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.15555">arXiv:2007.15555</a> <span> [<a href="https://arxiv.org/pdf/2007.15555">pdf</a>, <a href="https://arxiv.org/format/2007.15555">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/10.1007/s11433-020-1666-8">10.1007/s11433-020-1666-8 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First experimental constraints on WIMP couplings in the effective field theory framework from CDEX </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/physics?searchtype=author&query=Zeng%2C+Z">Z. Zeng</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Chiang%2C+C+Y">C. Y. Chiang</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Fang%2C+C+H">C. H. Fang</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+H+J">H. J. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a> , et al. (63 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="2007.15555v2-abstract-short" style="display: inline;"> We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15555v2-abstract-full').style.display = 'inline'; document.getElementById('2007.15555v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.15555v2-abstract-full" style="display: none;"> We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level (C.L.) and improve over the current bounds in the low $m_蠂$ region. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the $m_蠂<$ 6 GeV/$c^2$ region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15555v2-abstract-full').style.display = 'none'; document.getElementById('2007.15555v2-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 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">version accepted by Science China-PMA, 8 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci. China-Phys. Mech. Astron. 64, 281011 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.03085">arXiv:1911.03085</a> <span> [<a href="https://arxiv.org/pdf/1911.03085">pdf</a>, <a href="https://arxiv.org/format/1911.03085">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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/PhysRevD.101.052003">10.1103/PhysRevD.101.052003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Improved limits on solar axions and bosonic dark matter from the CDEX-1B experiment using the profile likelihood ratio method </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+S+K">S. K. Liu</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Gu%2C+P">P. Gu</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+H+T">H. T. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a> , et al. (55 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="1911.03085v2-abstract-short" style="display: inline;"> We present the improved constraints on couplings of solar axions and more generic bosonic dark matter particles using 737.1 kg-days of data from the CDEX-1B experiment. The CDEX-1B experiment, located at the China Jinping Underground Laboratory, primarily aims at the direct detection of weakly interacting massive particles using a p-type point-contact germanium detector. We adopt the profile likel… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.03085v2-abstract-full').style.display = 'inline'; document.getElementById('1911.03085v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.03085v2-abstract-full" style="display: none;"> We present the improved constraints on couplings of solar axions and more generic bosonic dark matter particles using 737.1 kg-days of data from the CDEX-1B experiment. The CDEX-1B experiment, located at the China Jinping Underground Laboratory, primarily aims at the direct detection of weakly interacting massive particles using a p-type point-contact germanium detector. We adopt the profile likelihood ratio method for analysis of data in the presence of backgrounds. An energy threshold of 160 eV was achieved, much better than the 475 eV of CDEX-1A with an exposure of 335.6 kg-days. This significantly improves the sensitivity for the bosonic dark matter below 0.8 keV among germanium detectors. Limits are also placed on the coupling $g_{Ae} < 2.48 \times 10^{-11}$ from Compton, bremsstrahlung, atomic-recombination and de-excitation channels and $g^{eff}_{AN} \times g_{Ae} < 4.14 \times 10^{-17}$ from a $^{57}$Fe M1 transition at 90\% confidence level. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.03085v2-abstract-full').style.display = 'none'; document.getElementById('1911.03085v2-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 April, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">version accepted by PRD, 9 pages, 11 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 101, 052003 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.13234">arXiv:1910.13234</a> <span> [<a href="https://arxiv.org/pdf/1910.13234">pdf</a>, <a href="https://arxiv.org/format/1910.13234">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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.124.111301">10.1103/PhysRevLett.124.111301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct Detection Constraints on Dark Photons with CDEX-10 Experiment at the China Jinping Underground Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=She%2C+Z">Z. She</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Dai%2C+W+H">W. H. Dai</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Geng%2C+X+P">X. P. Geng</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Gu%2C+P">P. Gu</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+H+T">H. T. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+T+C">T. C. Huang</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</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="1910.13234v2-abstract-short" style="display: inline;"> We report constraints on the dark photon effective kinetic mixing parameter ($魏$) with data taken from two ${p}$-type point-contact germanium detectors of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90\% confidence level upper limits on $魏$ of solar dark photon from 205.4 kg-day exposure are derived, probing new parameter space with masses (${m_V}$) from 10 to 300 eV/… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.13234v2-abstract-full').style.display = 'inline'; document.getElementById('1910.13234v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.13234v2-abstract-full" style="display: none;"> We report constraints on the dark photon effective kinetic mixing parameter ($魏$) with data taken from two ${p}$-type point-contact germanium detectors of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90\% confidence level upper limits on $魏$ of solar dark photon from 205.4 kg-day exposure are derived, probing new parameter space with masses (${m_V}$) from 10 to 300 eV/${c^2}$ in direct detection experiments. Considering dark photon as the cosmological dark matter, limits at 90\% confidence level with ${m_V}$ from 0.1 to 4.0 keV/${c^2}$ are set from 449.6 kg-day data, with a minimum of ${\rm{魏=1.3 \times 10^{-15}}}$ at ${\rm{m_V=200\ eV/c^2}}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.13234v2-abstract-full').style.display = 'none'; document.getElementById('1910.13234v2-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 March, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">5 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 124, 111301 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.00354">arXiv:1905.00354</a> <span> [<a href="https://arxiv.org/pdf/1905.00354">pdf</a>, <a href="https://arxiv.org/format/1905.00354">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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.123.161301">10.1103/PhysRevLett.123.161301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on Spin-Independent Nucleus Scattering with sub-GeV Weakly Interacting Massive Particle Dark Matter from the CDEX-1B Experiment at the China Jin-Ping Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Liu%2C+Z+Z">Z. Z. Liu</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Du%2C+Q">Q. Du</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+X+Y">X. Y. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=He%2C+S+M">S. M. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+Q+D">Q. D. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a> , et al. (46 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="1905.00354v3-abstract-short" style="display: inline;"> We report results on the searches of weakly interacting massive particles (WIMPs) with sub-GeV masses ($m_蠂$) via WIMP-nucleus spin-independent scattering with Migdal effect incorporated. Analysis on time-integrated (TI) and annual modulation (AM) effects on CDEX-1B data are performed, with 737.1 kg$\cdot$day exposure and 160 eVee threshold for TI analysis, and 1107.5 kg$\cdot$day exposure and 250… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.00354v3-abstract-full').style.display = 'inline'; document.getElementById('1905.00354v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.00354v3-abstract-full" style="display: none;"> We report results on the searches of weakly interacting massive particles (WIMPs) with sub-GeV masses ($m_蠂$) via WIMP-nucleus spin-independent scattering with Migdal effect incorporated. Analysis on time-integrated (TI) and annual modulation (AM) effects on CDEX-1B data are performed, with 737.1 kg$\cdot$day exposure and 160 eVee threshold for TI analysis, and 1107.5 kg$\cdot$day exposure and 250 eVee threshold for AM analysis. The sensitive windows in $m_蠂$ are expanded by an order of magnitude to lower DM masses with Migdal effect incorporated. New limits on $蟽_{蠂N}^{\rm SI}$ at 90\% confidence level are derived as $2\times$10$^{-32}\sim7\times$10$^{-35}$ $\rm cm^2$ for TI analysis at $m_蠂\sim$ 50$-$180 MeV/$c^2$, and $3\times$10$^{-32}\sim9\times$10$^{-38}$ $\rm cm^2$ for AM analysis at $m_蠂\sim$75 MeV/$c^2-$3.0 GeV/$c^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.00354v3-abstract-full').style.display = 'none'; document.getElementById('1905.00354v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 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">5 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. Lett. 123, 161301 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.12889">arXiv:1904.12889</a> <span> [<a href="https://arxiv.org/pdf/1904.12889">pdf</a>, <a href="https://arxiv.org/format/1904.12889">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <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.123.221301">10.1103/PhysRevLett.123.221301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Light Weakly-Interacting-Massive-Particle Dark Matter by Annual Modulation Analysis with a Point-Contact Germanium Detector at the China Jinping Underground Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Du%2C+Q">Q. Du</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=Guo%2C+Q+J">Q. J. Guo</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+Q+D">Q. D. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J+M">J. M. Li</a> , et al. (50 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="1904.12889v2-abstract-short" style="display: inline;"> We present results on light weakly interacting massive particle (WIMP) searches with annual modulation (AM) analysis on data from a 1-kg mass $p$-type point-contact germanium detector of the CDEX-1B experiment at the China Jinping Underground Laboratory. Datasets with a total live time of 3.2 yr within a 4.2 yr span are analyzed with analysis threshold of 250 eVee. Limits on WIMP-nucleus ($蠂$-$N$)… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.12889v2-abstract-full').style.display = 'inline'; document.getElementById('1904.12889v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.12889v2-abstract-full" style="display: none;"> We present results on light weakly interacting massive particle (WIMP) searches with annual modulation (AM) analysis on data from a 1-kg mass $p$-type point-contact germanium detector of the CDEX-1B experiment at the China Jinping Underground Laboratory. Datasets with a total live time of 3.2 yr within a 4.2 yr span are analyzed with analysis threshold of 250 eVee. Limits on WIMP-nucleus ($蠂$-$N$) spin-independent cross sections as function of WIMP mass ($m_蠂$) at 90\% confidence level (C.L.) are derived using the dark matter halo model. Within the context of the standard halo model, the 90\% C.L. allowed regions implied by the DAMA/LIBRA and CoGeNT AM-based analysis are excluded at $>$99.99\% and 98\% C.L., respectively. These results correspond to the best sensitivity at $m_蠂$$<$6$~{\rm GeV}/c^2$ among WIMP AM measurements to date. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.12889v2-abstract-full').style.display = 'none'; document.getElementById('1904.12889v2-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 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">5 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. Lett. 123, 221301 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1810.08808">arXiv:1810.08808</a> <span> [<a href="https://arxiv.org/pdf/1810.08808">pdf</a>, <a href="https://arxiv.org/format/1810.08808">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/10.1007/s11433-018-8001-3">10.1007/s11433-018-8001-3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performances of a prototype point-contact germanium detector immersed in liquid nitrogen for light dark matter search </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Du%2C+Q">Q. Du</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+Q+D">Q. D. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J+M">J. M. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J">J. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+X">X. Li</a> , et al. (48 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="1810.08808v1-abstract-short" style="display: inline;"> The CDEX-10 experiment searches for light weakly-interacting massive particles, a form of dark matter, at the China JinPing underground laboratory, where approximately 10 kg of germanium detectors are arranged in an array and immersed in liquid nitrogen. Herein, we report on the experimental apparatus, detector characterization, and spectrum analysis of one prototype detector. Owing to the higher… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.08808v1-abstract-full').style.display = 'inline'; document.getElementById('1810.08808v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.08808v1-abstract-full" style="display: none;"> The CDEX-10 experiment searches for light weakly-interacting massive particles, a form of dark matter, at the China JinPing underground laboratory, where approximately 10 kg of germanium detectors are arranged in an array and immersed in liquid nitrogen. Herein, we report on the experimental apparatus, detector characterization, and spectrum analysis of one prototype detector. Owing to the higher rise-time resolution of the CDEX-10 prototype detector as compared with CDEX-1B, we identified the origin of an observed category of extremely fast events. For data analysis of the CDEX-10 prototype, we introduced and applied an improved bulk/surface event discrimination method. The results of the new method were compared to those of the CDEX-1B spectrum. Both sets of results showed good consistency in the 0--12 keVee energy range, except for the 8.0 keV K-shell X-ray peak from the external copper. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.08808v1-abstract-full').style.display = 'none'; document.getElementById('1810.08808v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">version accepted by SCPMA, 8 pages, 11 figures and 2 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci. China Phys. Mech. Astron. 62, 031012 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.09327">arXiv:1802.09327</a> <span> [<a href="https://arxiv.org/pdf/1802.09327">pdf</a>, <a href="https://arxiv.org/format/1802.09327">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1007/s11433-018-9215-0">10.1007/s11433-018-9215-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study on cosmogenic activation in germanium detectors for future tonne-scale CDEX experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Ma%2C+J+L">J. L. Ma</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Lin%2C+S+T">S. T. Lin</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J">J. Li</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+S+K">S. K. Liu</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+Z+Z">Z. Z. Liu</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+H">H. Ma</a>, <a href="/search/physics?searchtype=author&query=Tang%2C+W+Y">W. Y. Tang</a>, <a href="/search/physics?searchtype=author&query=Tian%2C+Y">Y. Tian</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+L">L. Wang</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+Q">Q. Wang</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Zeng%2C+Z">Z. Zeng</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="1802.09327v2-abstract-short" style="display: inline;"> A study on cosmogenic activation in germanium was carried out to evaluate the cosmogenic background level of natural and $^{70}$Ge depleted germanium detectors. The production rates of long-lived radionuclides were calculated with Geant4 and CRY. Results were validated by comparing the simulated and experimental spectra of CDEX-1B detector. Based on the validated codes, the cosmogenic background l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.09327v2-abstract-full').style.display = 'inline'; document.getElementById('1802.09327v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.09327v2-abstract-full" style="display: none;"> A study on cosmogenic activation in germanium was carried out to evaluate the cosmogenic background level of natural and $^{70}$Ge depleted germanium detectors. The production rates of long-lived radionuclides were calculated with Geant4 and CRY. Results were validated by comparing the simulated and experimental spectra of CDEX-1B detector. Based on the validated codes, the cosmogenic background level was predicted for further tonne-scale CDEX experiment. The suppression of cosmogenic background level could be achieved by underground germanium crystal growth and high-purity germanium detector fabrication to reach the sensitivity requirement for direct detection of dark matter. With the low cosmogenic background, new physics channels, such as solar neutrino research and neutrinoless double-beta decay experiments, were opened and the corresponding simulations and evaluations were carried out. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.09327v2-abstract-full').style.display = 'none'; document.getElementById('1802.09327v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 October, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 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">Version accepted by SCPMA; 10 pages, 13 figures, 7 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sci. China Phys. Mech. Astron. 62, 011011 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1802.09016">arXiv:1802.09016</a> <span> [<a href="https://arxiv.org/pdf/1802.09016">pdf</a>, <a href="https://arxiv.org/format/1802.09016">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="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.120.241301">10.1103/PhysRevLett.120.241301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg ${\times}$ day Data of the CDEX-10 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=Agartioglu%2C+M">M. Agartioglu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Du%2C+Q">Q. Du</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+Q+D">Q. D. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J+M">J. M. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J">J. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+X">X. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+X+Q">X. Q. Li</a> , et al. (48 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="1802.09016v2-abstract-short" style="display: inline;"> We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8 $\times 10^{-42}$ and 3 $\times 10^{-36}$ cm$^{2}$ at a 90\% confidenc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.09016v2-abstract-full').style.display = 'inline'; document.getElementById('1802.09016v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1802.09016v2-abstract-full" style="display: none;"> We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8 $\times 10^{-42}$ and 3 $\times 10^{-36}$ cm$^{2}$ at a 90\% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass ($m_蠂$) of 5 GeV/${c}^2$ are achieved. The lower reach of $m_蠂$ is extended to 2 GeV/${c}^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1802.09016v2-abstract-full').style.display = 'none'; document.getElementById('1802.09016v2-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 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 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">5 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. Lett. 120, 241301 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1710.06650">arXiv:1710.06650</a> <span> [<a href="https://arxiv.org/pdf/1710.06650">pdf</a>, <a href="https://arxiv.org/format/1710.06650">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="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/10.1088/1674-1137/42/2/023002">10.1088/1674-1137/42/2/023002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Limits on light WIMPs with a 1 kg-scale germanium detector at 160 eVee physics threshold at the China Jinping Underground Laboratory </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Yang%2C+L+T">L. T. Yang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H+B">H. B. Li</a>, <a href="/search/physics?searchtype=author&query=Yue%2C+Q">Q. Yue</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+K+J">K. J. Kang</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+J+P">J. P. Cheng</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Y+J">Y. J. Li</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+H+T">H. T. Wong</a>, <a href="/search/physics?searchtype=author&query=A%C7%A7artio%C7%A7lu%2C+M">M. A千artio千lu</a>, <a href="/search/physics?searchtype=author&query=An%2C+H+P">H. P. An</a>, <a href="/search/physics?searchtype=author&query=Chang%2C+J+P">J. P. Chang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+J+H">J. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+Y+H">Y. H. Chen</a>, <a href="/search/physics?searchtype=author&query=Deng%2C+Z">Z. Deng</a>, <a href="/search/physics?searchtype=author&query=Du%2C+Q">Q. Du</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+H">H. Gong</a>, <a href="/search/physics?searchtype=author&query=He%2C+L">L. He</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+J+W">J. W. Hu</a>, <a href="/search/physics?searchtype=author&query=Hu%2C+Q+D">Q. D. Hu</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+H+X">H. X. Huang</a>, <a href="/search/physics?searchtype=author&query=Jia%2C+L+P">L. P. Jia</a>, <a href="/search/physics?searchtype=author&query=Jiang%2C+H">H. Jiang</a>, <a href="/search/physics?searchtype=author&query=Li%2C+H">H. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J+M">J. M. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+J">J. Li</a>, <a href="/search/physics?searchtype=author&query=Li%2C+X">X. Li</a> , et al. (43 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1710.06650v2-abstract-short" style="display: inline;"> We report results of a search for light weakly interacting massive particle (WIMP) dark matter from the CDEX-1 experiment at the China Jinping Underground Laboratory (CJPL). Constraints on WIMP-nucleon spin-independent (SI) and spin-dependent (SD) couplings are derived with a physics threshold of 160 eVee, from an exposure of 737.1 kg-days. The SI and SD limits extend the lower reach of light WIMP… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.06650v2-abstract-full').style.display = 'inline'; document.getElementById('1710.06650v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1710.06650v2-abstract-full" style="display: none;"> We report results of a search for light weakly interacting massive particle (WIMP) dark matter from the CDEX-1 experiment at the China Jinping Underground Laboratory (CJPL). Constraints on WIMP-nucleon spin-independent (SI) and spin-dependent (SD) couplings are derived with a physics threshold of 160 eVee, from an exposure of 737.1 kg-days. The SI and SD limits extend the lower reach of light WIMPs to 2 GeV and improve over our earlier bounds at WIMP mass less than 6 GeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1710.06650v2-abstract-full').style.display = 'none'; document.getElementById('1710.06650v2-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 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 10 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Chin. Phys. C 42, 23002 (2018) </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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