In this letter, we report the dark matter search results from the commissioning run and the first science run of the PandaX-4T experiment. A blind analysis is carried out on the entire data set. The data processing is improved compared to previous work, unifying the low-level signal reconstruction in a wide energy range up to 120 keV. With a total exposure of 1.54 tonne$\cdot$year, no significant excess of nuclear recoil events is found. The lowest 90% confidence level exclusion on the spin-independent cross section is $1.6 \times 10^{-47}\,\mathrm{cm}^2$ at a dark matter mass of 40 GeV$/c^2$. Our results represent the most stringent constraint for a dark matter mass above 100 GeV$/c^2$.
Search for Diffuse Supernova Neutrino Background of All Flavors with PandaX-4T
Research Center for Particle Science and Technology, Institute of Frontier and Interdisciplinary Science, Shandong University(山东大学前沿交叉科学研究院粒子科学与技术研究中心);Key Laboratory of Particle Physics and Particle Irradiation of the Ministry of Education, Shandong University(山东大学教育部粒子物理与粒子辐照重点实验室);State Key Laboratory of Dark Matter Physics, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and Cosmology, School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院暗物质物理全国重点实验室粒子天体物理与宇宙学教育部重点实验室上海市粒子物理与宇宙学重点实验室);New Cornerstone Science Laboratory, Tsung-Dao Lee Institute, Shanghai Jiao Tong University(上海交通大学新Cornerstone科学实验室汤川秀树研究所);Shanghai Jiao Tong University Sichuan Research Institute(上海交通大学四川研究院)
Search for Light Dark Matter with 259-day data in PandaX-4T
Shanghai Jiao Tong University(上海交通大学);Tsung-Dao Lee Institute(汤川中心);State Key Laboratory of Dark Matter Physics(暗物质物理全国重点实验室);Key Laboratory for Particle Astrophysics and Cosmology (MoE)(粒子天体物理国家重点实验室(教育部));Shanghai Key Laboratory for Particle Physics and Cosmology(上海市粒子物理与宇宙学重点实验室);Shanghai Jiao Tong University Sichuan Research Institute(上海交通大学四川研究院);Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province(四川省锦屏深地前沿科学与暗物质重点实验室);Yalong River Hydropower Development Company, Ltd.(雅砻江流域水电开发有限公司)
Measurement of solar $pp$ neutrino flux with the new PandaX-4T data
Shanghai Jiao Tong University(上海交通大学);Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province(四川省锦屏深地前沿科学与暗物质重点实验室);Yalong River Hydropower Development Company, Ltd.(雅砻江流域水电开发有限公司)
Search for New Physics via Low-Energy Electron Recoils with a 4.2 Tonne\times Year Exposure from the LZ Experiment
SLAC National Accelerator Laboratory(斯坦福直线加速器中心);Kavli Institute for Particle Astrophysics and Cosmology, Stanford University(卡弗里粒子天体物理与宇宙学研究所,斯坦福大学);University College London (UCL)(伦敦大学学院);Brown University(布朗大学);University of California, Santa Barbara(加州大学圣塔芭芭拉分校);Imperial College London(帝国理工学院);University of Maryland(马里兰大学)
Search for neutrinoless quadruple beta decay of $^{136}$Xe in PandaX-4T detector
Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University(中山大学中法核工程与技术学院);State Key Laboratory of Dark Matter Physics, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and Cosmology, School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院暗物质物理全国重点实验室粒子天体物理宇宙学教育部重点实验室上海粒子物理与宇宙学上海市重点实验室);State Key Laboratory of Dark Matter Physics, Key Laboratory for Particle Astrophysics and Cosmology (MoE), Shanghai Key Laboratory for Particle Physics and Cosmology, New Cornerstone Science Laboratory, Tsung-Dao Lee Institute, Shanghai Jiao Tong University(上海交通大学物理与天文学院新cornerstone科学实验室李政道研究所暗物质物理全国重点实验室粒子天体物理宇宙学教育部重点实验室上海粒子物理与宇宙学上海市重点实验室);Shanghai Jiao Tong University Sichuan Research Institute(上海交通大学四川研究院);Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province(四川省锦屏深地前沿科学与暗物质重点实验室);Yalong River Hydropower Development Company, Ltd.(雅砻江流域水电开发有限公司)
Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB
DEAP-3600是一个单相液氩(LAr)直接探测暗物质实验,在SNOLAB(加拿大萨德伯里)地下2公里处运行。该探测器由3279公斤的LAr包含在一个球形丙烯酸容器。本文报告了在运行的第一年期间,在231个存活日期间,对758吨\cdot日暴露量进行的分析。在所关注的WIMP搜索区域中没有观察到候选信号事件,这导致在90\% C下对于100 GeV/c $^{2}$(1 TeV/c $^{2}$)WIMP质量,LAr靶上WIMP-核子自旋无关截面的领先极限为$3.9\times10^{-45}$ cm $^{2}$($1.5\times10^{-44}$ cm $^{2}$)。L.除了一个详细的背景模型,该分析表明,最好的脉冲形状歧视在LAr阈值,采用贝叶斯光电子计数技术,以提高能量分辨率和歧视效率,并利用两个位置重建算法的基础上PMT电荷和光子到达时间。
Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints
State Key Laboratory of Dark Matter Physics, Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院、紫江研究院暗物质国家重点实验室);Key Laboratory for Particle Astrophysics and Cosmology (MOE) & Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University(上海交通大学粒子天体物理与宇宙学教育部重点实验室、上海粒子物理与宇宙学重点实验室);Indian Institute of Science Education and Research - Bhopal(印度科学教育研究所博帕尔分校)
Light Dark Matter Search with 7.8 Tonne-Year of Ionization-Only Data in XENONnT
Columbia University(哥伦比亚大学);Nikhef and the University of Groningen, Van Swinderen Institute(荷兰核粒子物理研究所和格罗宁根大学范斯温德伦研究所);Kamioka Observatory, Institute for Cosmic Ray Research, and Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo(东京宇宙线研究所神冈观测站及汤川理论物理数学研究所(WPI),东京大学);University of Zürich(苏黎世大学);LPNHE, Sorbonne Université, CNRS/IN2P3(巴黎大索邦大学、法国国家科学研究中心/欧洲核子研究组织粒子与高能物理实验室);University of Münster(明斯特大学);INFN-Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute(意大利国家核物理研究所格兰萨索国家实验室及格兰萨索科学研究所);University of Chicago(芝加哥大学);Max-Planck-Institut für Kernphysik(马克斯·普朗克核物理研究所);New York University Abu Dhabi - Center for Astro, Particle and Planetary Physics(纽约大学阿布扎比分校天体、粒子和行星物理中心);SUBATECH, IMT Atlantique, CNRS/IN2P3, Nantes Université(南特大学、大西洋高等矿业学院、法国国家科学研究中心/欧洲核子研究组织亚原子技术与高能物理实验室)
Inelastic Singlet-Doublet Fermion Dark Matter in light of the 248 keV LZ event
Indian Institute of Technology Guwahati(印度理工学院古瓦哈提分校);Indian Institute of Technology Hyderabad(印度理工学院海德拉巴分校);Institute of Mathematical Sciences(数学科学研究所)