检索结果-内蒙古大学图书馆

Search for neutrinoless double-beta decay of Ge76 with a natural broad energy germanium detector

学校读者我要写书评

暂无评论

Physical Review D 2022年第3期106卷 032012-032012页

作者： W. H. Dai H. Ma Q. Yue Z. She K. J. Kang Y. J. Li M. Agartioglu H. P. An J. P. Chang Y. H. Chen J. P. Cheng Z. Deng C. H. Fang X. P. Geng H. Gong Q. J. Guo X. Y. Guo L. He S. M. He J. W. Hu H. X. Huang T. C. Huang H. T. Jia X. Jiang H. B. Li J. M. Li J. Li Q. Y. Li R. M. J. Li X. Q. Li Y. L. Li Y. F. Liang B. Liao F. K. Lin S. T. Lin S. K. Liu Y. D. Liu Y. Liu Y. Y. Liu Z. Z. Liu Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan K. Saraswat V. Sharma M. K. Singh T. X. Sun C. J. Tang W. Y. Tang Y. Tian G. F. Wang L. Wang Q. Wang Y. Wang Y. X. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing R. Xu Y. Xu T. Xue Y. L. Yan L. T. Yang C. H. Yeh N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng Z. Zeng B. T. Zhang F. S. Zhang L. Zhang Z. H. Zhang Z. Y. Zhang K. K. Zhao M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Beijing 100084 Institute of Physics Academia Sinica Taipei 11529 Department of Physics Tsinghua University Beijing 100084 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal University Beijing 100875 College of Physics Sichuan University Chengdu 610065 School of Physics Peking University Beijing 100871 Department of Nuclear Physics China Institute of Atomic Energy Beijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai 519082 School of Physics Nankai University Tianjin 300071 Department of Physics Banaras Hindu University Varanasi 221005 Department of Physics Beijing Normal University Beijing 100875

A natural broad energy germanium detector is operated in the China Jinping Underground Laboratory for a feasibility study of building the next generation experiment of the neutrinoless double-beta (0νββ) decay of Ge76. The setup of the prototype facility, characteristics of the broad energy germanium detector, background reduction methods, and data analysis are described in this paper. A background index of 6.4×10−3 counts/(keV kg 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 day, thus a limit on the half life of Ge76 0νββ decay is set at T1/20ν>5.62×1022 yr at 90% C.L. The limit corresponds to an effective Majorana neutrino mass in the range of 4.6–10.3 eV, dependent on the nuclear matrix elements.

关键词： Neutrinoless double beta decay Rare decays

Constraints on sub-GeV dark matter boosted by cosmic rays from the CDEX-10 experiment at the China Jinping Underground Laboratory

学校读者我要写书评

暂无评论

Physical Review D 2022年第5期106卷 052008-052008页

作者： R. Xu L. T. Yang Q. Yue K. J. Kang Y. J. Li M. Agartioglu H. P. An J. P. Chang Y. H. Chen J. P. Cheng W. H. Dai Z. Deng C. H. Fang X. P. Geng H. Gong X. Y. Guo Q. J. Guo L. He S. M. He J. W. Hu H. X. Huang T. C. Huang H. T. Jia X. Jiang H. B. Li J. M. Li J. Li Q. Y. Li R. M. J. Li X. Q. Li Y. L. Li Y. F. Liang B. Liao F. K. Lin S. T. Lin S. K. Liu Y. Liu Y. D. Liu Y. Y. Liu Z. Z. Liu H. Ma Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan K. Saraswat V. Sharma Z. She M. K. Singh T. X. Sun C. J. Tang W. Y. Tang Y. Tian G. F. Wang L. Wang Q. Wang Y. Wang Y. X. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing Y. Xu T. Xue Y. L. Yan C. H. Yeh N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng Z. Zeng B. T. Zhang F. S. Zhang L. Zhang Z. H. Zhang Z. Y. Zhang K. K. Zhao M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Beijing 100084 Institute of Physics Academia Sinica Taipei 11529 Department of Physics Tsinghua University Beijing 100084 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal University Beijing 100875 College of Physics Sichuan University Chengdu 610065 School of Physics Peking University Beijing 100871 Department of Nuclear Physics China Institute of Atomic Energy Beijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai 519082 School of Physics Nankai University Tianjin 300071 Department of Physics Banaras Hindu University Varanasi 221005 Department of Physics Beijing Normal University Beijing 100875

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 1.7×10−30 to 10−26 cm2 for dark matter of 10 keV/c2 to 1 GeV/c2.

关键词： Particle astrophysics Particle dark matter Weakly interacting massive particles Dark matter detectors

Studies of the Earth shielding effect to direct dark matter searches at the China Jinping Underground Laboratory

学校读者我要写书评

暂无评论

Physical Review D 2022年第5期105卷 052005-052005页

作者： Z. Z. Liu L. T. Yang Q. Yue C. H. Yeh K. J. Kang Y. J. Li M. Agartioglu H. P. An J. P. Chang J. H. Chen Y. H. Chen J. P. Cheng W. H. Dai Z. Deng C. H. Fang X. P. Geng H. Gong X. Y. Guo Q. J. Guo L. He S. M. He J. W. Hu H. X. Huang T. C. Huang H. T. Jia X. Jiang H. B. Li J. M. Li J. Li R. M. J. Li X. Q. Li Y. L. Li B. Liao F. K. Lin S. T. Lin S. K. Liu Y. Liu Y. D. Liu Y. Y. Liu H. Ma Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan V. Sharma Z. She K. Saraswat M. K. Singh T. X. Sun C. J. Tang W. Y. Tang Y. Tian G. F. Wang L. Wang Q. Wang Y. Wang Y. X. Wang Z. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing Y. Xu T. Xue Y. L. Yan N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng Z. Zeng B. T. Zhang F. S. Zhang K. K. Zhang Z. H. Zhang Z. Y. Zhang M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu Key Laboratory of Particle and Radiation Imaging (Ministry of Education) and Department of Engineering Physics Tsinghua University Beijing 100084 Institute of Physics Academia Sinica Taipei 11529 Department of Physics Tsinghua University Beijing 100084 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal University Beijing 100875 College of Physics Sichuan University Chengdu 610065 School of Physics Peking University Beijing 100871 Department of Nuclear Physics China Institute of Atomic Energy Beijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai 519082 School of Physics Nankai University Tianjin 300071 Department of Physics Banaras Hindu University Varanasi 221005 Department of Physics Beijing Normal University Beijing 100875

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 χ−N cross section exclusion regions are derived based on the studies with CDEX experiment data.

关键词： Particle astrophysics Particle dark matter Weakly interacting massive particles Dark matter detectors

Constraining Dark Matter Models with a Light Mediator from CDEX-10 Experiment at China Jinping Underground Laboratory

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Nie, Qi-Yuan Dai, Wen-Han Ma, Hao Yue, Qian Kang, Ke-Jun Li, Yuan-Jing An, Hai-Peng Greeshma, C. Chang, Jian-Ping Chen, Yun-Hua Cheng, Jian-Ping Deng, Zhi Fang, Chang-Hao Geng, Xin-Ping Gong, Hui Guo, Tao Guo, Xu-Yuan He, Li He, Jin-Rong Huang, Han-Xiong Huang, Tu-Chen Karmakar, S. Li, Jian-Min Li, Jin Li, Yu-Lan Li, Hau-Bin Li, Ming-Chuan Li, Han-Yu Li, Qian-Yun Li, Ren-Ming-Jie Li, Xue-Qian Liang, Yi-Fan Liao, Bin Lin, Fong-Kay Lin, Shin-Ted Liu, Jia-Xuan Liu, Yan-Dong Liu, Yuan-Yuan Liu, Shu-Kui Liu, Yu Pan, Hui Qi, Ning-Chun Ren, Jie Ruan, Xi-Chao Shen, Man-Bin Singh, Manoj Kumar Sun, Wen-Liang Sun, Tian-Xi Tang, Chang-Jian Tian, Yang Wan, Hong-Fei Wang, Jun-Zheng Wang, Yu-Feng Wang, Guang-Fu Wang, Li Wang, Qing Wong, Henry-Tsz-King Wu, Yu-Cheng Xing, Hao-Yang Xiong, Kai-Zhi Xu, Rui Xu, Yin Xue, Tao Yan, Yu-Lu Yang, Li-Tao Yi, Nan Yu, Chun-Xu Yu, Hai-Jun Yu, Xiao Zeng, Ming Zeng, Zhi Zhang, Zhen-Hua Zhang, Zhen-Yu Zhang, Peng Zhang, Feng-Shou Zhang, Lei Zhao, Ji-Zhong Zhao, Kang-Kang Zhao, Ming-Gang Zhou, Ji-Fang Zhou, Zu-Ying Zhu, Jing-Jun Key Laboratory of Particle and Radiation Imaging Ministry of Education Department of Engineering Physics Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China School of Physics and Astronomy Beijing Normal University Beijing100875 China College of Physics Sichuan University Chengdu610065 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India

We search for nuclear recoil signals of dark matter models with a light mediator using data taken from a p-type point-contact germanium detector of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90% confidence level upper limits on the DM-nucleon interaction cross section from 205.4 kg-day exposure data are derived, excluding new parameter space in 2∼5 GeV DM mass when the mediator mass is comparable to or lighter than the typical momentum transfer. We further interpret our results to constrain a specific self-interacting dark matter model with a light mediator coupling to the photon through kinetic mixing, and set experimental limits on the model parameter region favored by astrophysical observations. Copyright © 2024, The Authors. All rights reserved.

关键词： Momentum transfer

Search for Light Dark Matter from the Atmosphere in PandaX-4T

学校读者我要写书评

暂无评论

Physical Review Letters 2023年第4期131卷 041001-041001页

作者： Xuyang Ning Abdusalam Abdukerim Zihao Bo Wei Chen Xun Chen Chen Cheng Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Changbo Fu Mengting Fu Lisheng Geng Karl Giboni Linhui Gu Xuyuan Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Yanlin Huang Junting Huang Zhou Huang Ruquan Hou Yu Hou Xiangdong Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Qing Lin Jianglai Liu Congcong Lu Xiaoying Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Ningchun Qi Zhicheng Qian Xiangxiang Ren Nasir Shaheed Xiaofeng Shang Xiyuan Shao Guofang Shen Lin Si Wenliang Sun Andi Tan Yi Tao Anqing Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Zhou Wang Yuehuan Wei Mengmeng Wu Weihao Wu Jingkai Xia Mengjiao Xiao Xiang Xiao Pengwei Xie Binbin Yan Xiyu Yan Jijun Yang Yong Yang Yukun Yao Chunxu Yu Ying Yuan Zhe Yuan Xinning Zeng Dan Zhang Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Qibin Zheng Jifang Zhou Ning Zhou Xiaopeng Zhou Yong Zhou Yubo Zhou Liangliang Su Lei Wu School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology (MoE) Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai 200240 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213 China School of Physics Sun Yat-Sen University Guangzhou 510275 China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Zhuhai 519082 China Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 200240 China Department of Physics Yantai University Yantai 264005 China Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) Institute of Modern Physics Fudan University Shanghai 200433 China School of Physics Peking University Beijing 100871 China School of Physics Beihang University Beijing 102206 China International Research Center for Nuclei and Particles in the Cosmos & Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China School of Physics and Microelectronics Zhengzhou University Zhengzhou Henan 450001 China Yalong River Hydropower Development Company Ltd. 288 Shuanglin Road Chengdu 610051 China School of Medical Instrument and Food Engineering University of Shanghai for Science and Technology Shanghai 200093 China School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China Department of Physics University of Maryland College Park Maryland 20742 USA State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary Science Shandong University Qingdao 266237 Shandong China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong University Qingdao 266237 Shandong China Schoo

We report a search for light dark matter produced through the cascading decay of η mesons, which are created as a result of inelastic collisions between cosmic rays and Earth’s atmosphere. We introduce a new and general framework, publicly accessible, designed to address boosted dark matter specifically, with which a full and dedicated simulation including both elastic and quasielastic processes of Earth attenuation effect on the dark matter particles arriving at the detector is performed. In the PandaX-4T commissioning data of 0.63 tonne·year exposure, no significant excess over background is observed. The first constraints on the interaction between light dark matter generated in the atmosphere and nucleus through a light scalar mediator are obtained. The lowest excluded cross section is set at 5.9×10−37 cm2 for a dark matter mass of 0.1 MeV/c2 and mediator mass of 300 MeV/c2. The lowest upper limit of η to the dark matter decay branching ratio is 1.6×10−7.

关键词： Cosmic rays & astroparticles Particle dark matter

Research on the knee region of cosmic ray by using a novel type of electron-neutron detector array

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Li, Bing-Bing Ma, Xin-Hua Cui, Shu-Wang Chen, Hao-Kun Chen, Tian-Lu Danzengluobu Gao, Wei Hu, Hai-Bing Kuleshov, Denis Kurinov, Kirill Liu, Hu Liu, Mao-Yuan Liu, Ye Peng, Da-Yu Qi, Yao-Hui Shchegolev, Oleg Stenkin, Yuri Yin, Li-Qiao Zhang, Heng-Yu Zhang, Liang-Wei College of Physics Hebei Normal University Shijiazhuang050024 China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China TIANFU Cosmic Ray Research Center Sichuan Chengdu610000 China Science School Tibet University Tibet Lhasa850000 China Key Laboratory of Comic Rays Ministry of Education Tibet University Tibet Lhasa850000 China Institute for Nuclear Research of the Russian Academy of Sciences Moscow117312 Russia School of Physical Science and Technology Southwest Jiaotong University Sichuan Chengdu610031 China School of Management Science and Engineering Hebei University of Economics and Business Hebei Shijiazhuang050061 China Moscow Institute of Physics and Technology Moscow141700 Russia

By accurately measuring composition and energy spectrum of cosmic ray, the origin problem of so called "knee" region (energy > 1 PeV) can be solved. However, up to the present, the results of the spectrum in the knee region obtained by several previous experiments have shown obvious differences, so they cannot give effective evidence for judging the theoretical models on the origin of the knee. Recently, the Large High Altitude Air Shower Observatory (LHAASO) has reported several major breakthroughs and important results in astro-particle physics field. Relying on its advantages of wide-sky survey, high altitude location and large area detector arrays, the research content of LHAASO experiment mainly includes ultra high-energy gamma-ray astronomy, measurement of cosmic ray spectra in the knee region, searching for dark matter and new phenomena of particle physics at higher energy. The electron and Thermal Neutron detector (EN-Detector) is a new scintillator detector which applies thermal neutron detection technology to measure cosmic ray extensive air shower (EAS). This technology is an extension of LHAASO. The EN-Detector Array (ENDA) can highly efficiently measure thermal neutrons generated by secondary hadrons so called "skeleton" of EAS. In this paper, we perform the optimization of ENDA configuration, and obtain expectations on the ENDA results, including thermal neutron distribution, trigger efficiency and capability of cosmic ray composition separation. The obtained real data results are consistent with those by the Monte Carlo simulation. © 2024, CC BY-NC-SA.

关键词： Cosmic rays

Search for Light Dark Matter with Ionization Signals in the PandaX-4T Experiment

学校读者我要写书评

暂无评论

Physical Review Letters 2023年第26期130卷 261001-261001页

作者： Shuaijie Li Mengmeng Wu Abdusalam Abdukerim Zihao Bo Wei Chen Xun Chen Yunhua Chen Chen Cheng Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Changbo Fu Mengting Fu Lisheng Geng Karl Giboni Linhui Gu Xuyuan Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Yanlin Huang Zhou Huang Ruquan Hou Xiangdong Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shu Li Qing Lin Jianglai Liu Xiaoying Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Xuyang Ning Ningchun Qi Zhicheng Qian Xiangxiang Ren Nasir Shaheed Changsong Shang Xiaofeng Shang Guofang Shen Lin Si Wenliang Sun Andi Tan Yi Tao Anqing Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Zhou Wang Yuehuan Wei Weihao Wu Jingkai Xia Mengjiao Xiao Xiang Xiao Pengwei Xie Binbin Yan Xiyu Yan Jijun Yang Yong Yang Yukun Yao Zhengyun You Chunxu Yu Jumin Yuan Ying Yuan Zhe Yuan Xinning Zeng Dan Zhang Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Qibin Zheng Jifang Zhou Ning Zhou Xiaopeng Zhou Yong Zhou Yubo Zhou Tsung-Dao Lee Institute Shanghai Jiao Tong University Shanghai 200240 China School of Physics Sun Yat-Sen University Guangzhou 510275 China School of Physics and Astronomy Shanghai Jiao Tong University Key Laboratory for Particle Astrophysics and Cosmology (MoE) Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai 200240 China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213 China Yalong River Hydropower Development Company Ltd. 288 Shuanglin Road Chengdu 610051 China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University Zhuhai 519082 China School of Physics Nankai University Tianjin 300071 China Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) Institute of Modern Physics Fudan University Shanghai 200433 China School of Physics Peking University Beijing 100871 China School of Physics Beihang University Beijing 102206 China International Research Center for Nuclei and Particles in the Cosmos and Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang University Beijing 100191 China School of Physics and Microelectronics Zhengzhou University Zhengzhou Henan 450001 China School of Medical Instrument and Food Engineering University of Shanghai for Science and Technology Shanghai 200093 China Department of Physics University of Maryland College Park Maryland 20742 USA School of Mechanical Engineering Shanghai Jiao Tong University Shanghai 200240 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Department of Modern Physics University of Science and Technology of China Hefei 230026 China Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary Science Shandong University Qingdao 266237 Shandong China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong University Qingdao 266237 Shandong China SJTU Pa

We report the search results of light dark matter through its interactions with shell electrons and nuclei, using the commissioning data from the PandaX-4T liquid xenon detector. Low energy events are selected to have an ionization-only signal between 60 to 200 photoelectrons, corresponding to a mean nuclear recoil energy from 0.77 to 2.54 keV and electronic recoil energy from 0.07 to 0.23 keV. With an effective exposure of 0.55 tonne·year, we set the most stringent limits within a mass range from 40 MeV/c2 to 10 GeV/c2 for pointlike dark matter-electron interaction, 100 MeV/c2 to 10 GeV/c2 for dark matter-electron interaction via a light mediator, and 3.2 to 4 GeV/c2 for dark matter-nucleon spin-independent interaction. For DM interaction with electrons, our limits are closing in on the parameter space predicted by the freeze-in and freeze-out mechanisms in the early Universe.

关键词： Dark matter Particle dark matter Dark matter detectors

Constraints on dark matter boosted by supernova shock within the effective field theory framework from the CDEX-10 experiment

学校读者我要写书评

暂无评论

arXiv 2025年

作者： Wang, J.Z. Yang, L.T. Yue, Q. Kang, K.J. Li, Y.J. An, H.P. Greeshma, C. Chang, J.P. Chen, H. Chen, Y.H. Cheng, J.P. Dai, W.H. Deng, Z. Fang, C.H. Geng, X.P. Gong, H. Guo, Q.J. Guo, T. Guo, X.Y. He, L. He, J.R. Huang, H.X. Huang, T.C. Karmakar, S. Li, H.B. Li, H.Y. Li, J.M. Li, J. Li, M.C. Li, Q.Y. Li, R.M.J. Li, X.Q. Li, Y.L. Liang, Y.F. Liao, B. Lin, F.K. Lin, S.T. Liu, J.X. Liu, R.Z. Liu, S.K. Liu, Y.D. Liu, Y. Liu, Y.Y. Ma, H. Mao, Y.C. Mureed, A. Nie, Q.Y. Pan, H. Qi, N.C. Ren, J. Ruan, X.C. Shen, M.B. Shi, H.Y. Singh, M.K. Sun, T.X. Sun, W.L. Tang, C.J. Tian, Y. Wan, H.F. Wang, G.F. Wang, L. Wang, Q. Wang, Q. Wang, Y.F. Wang, Y.X. Wong, H.T. Wu, Y.C. Xing, H.Y. Xiong, K.Z. Xu, R. Xu, Y. Xue, T. Yan, Y.L. Yi, N. Yu, C.X. Yu, H.J. Yu, X. Zeng, M. Zeng, Z. Zhang, F.S. Zhang, P. Zhang, Z.H. Zhang, Z.Y. Zhao, M.G. Zhou, J.F. Zhou, Z.Y. Zhu, J.J. Key Laboratory of Particle and Radiation Imaging Ministry of Education Department of Engineering Physics Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China School of Physics and Astronomy Beijing Normal University Beijing100875 China College of Physics Sichuan University Chengdu610065 China School of Physics Peking University Beijing100871 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India

Supernova shocks can boost dark matter (DM) particles to high, yet nonrelativistic, velocities, providing a suitable mechanism for analysis within the framework of the nonrelativistic effective field theory (NREFT). These accelerated DM sources extend the experimental ability to scan the parameter space of light DM into the sub-GeV region. In this study, we specifically analyze DM accelerated by the Monogem Ring supernova remnant, whose age (∼ 68000 yr) and distance to Earth (∼ 300 parsecs) are strategically matched to enable detection with current terrestrial detectors. Utilizing the 205.4 kg·day data obtained from the CDEX-10 experiment at the China Jinping Underground Laboratory (CJPL), we derive new constraints on boosted DM within the NREFT framework. The NREFT coupling constant exclusion regions now penetrate the sub-GeV mass range, with optimal sensitivity achieved for operators O3, O6, O15 in the 0.4–0.6 GeV mass range. Copyright © 2025, The Authors. All rights reserved.

关键词：

Emergence of steady quantum transport in a superconducting processor

学校读者我要写书评

暂无评论

arXiv 2024年

作者： Zhang, Pengfei Gao, Yu Xu, Xiansong Wang, Ning Dong, Hang Guo, Chu Deng, Jinfeng Zhang, Xu Chen, Jiachen Xu, Shibo Wang, Ke Wu, Yaozu Zhang, Chuanyu Jin, Feitong Zhu, Xuhao Zhang, Aosai Zou, Yiren Tan, Ziqi Cui, Zhengyi Zhu, Zitian Shen, Fanhao Li, Tingting Zhong, Jiarun Bao, Zehang Zhao, Liangtian Hao, Jie Li, Hekang Wang, Zhen Song, Chao Guo, Qiujiang Wang, H. Poletti, Dario School of Physics ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang Key Laboratory of Micro-nano Quantum Chips and Quantum Control Zhejiang University Hangzhou China Science Mathematics and Technology Cluster Singapore University of Technology and Design 8 Somapah Road Singapore487372 Singapore College of Physics and Electronic Engineering Center for Computational Sciences Sichuan Normal University Chengdu610068 China Henan Key Laboratory of Quantum Information and Cryptography Zhengzhou450001 China Institute of Automation Chinese Academy of Sciences Beijing100190 China Engineering Product Development Pillar Singapore University of Technology and Design 8 Somapah Road Singapore487372 Singapore Centre for Quantum Technologies National University of Singapore Singapore117543 Singapore MajuLab CNRS-UNS-NUS-NTU International Joint Research Unit UMI 3654 Singapore Singapore

Non-equilibrium quantum transport is crucial to technological advances ranging from nanoelectronics to thermal management. In essence, it deals with the coherent transfer of energy and (quasi-)particles through quantum channels between thermodynamic baths. A complete understanding of quantum transport thus requires the ability to simulate and probe macroscopic and microscopic physics on equal footing. Using a superconducting quantum processor, we demonstrate the emergence of non-equilibrium steady quantum transport by emulating the baths with qubit ladders and realising steady particle currents between the baths. We experimentally show that the currents are independent of the microscopic details of bath initialisation, and their temporal fluctuations decrease rapidly with the size of the baths, emulating those predicted by thermodynamic baths. The above characteristics are experimental evidence of pure-state statistical mechanics and prethermalisation in non-equilibrium many-body quantum systems. Furthermore, by utilising precise controls and measurements with single-site resolution, we demonstrate the capability to tune steady currents by manipulating the macroscopic properties of the baths, including filling and spectral properties. Our investigation paves the way for a new generation of experimental exploration of non-equilibrium quantum transport in strongly correlated quantum matter. © 2024, CC BY.

关键词： Statistical mechanics