Search for Cosmic-Ray Produced Dark Meson via the $U(1)_\text{D}$ Portal at JUNO
College of Physics, Sichuan University（四川大学物理学院）；Provincial Key Laboratory of Solid-State Optoelectronic Devices, Zhejiang Normal University（浙江师范大学固态光电器件省级重点实验室）；Institute of Physics, Henan Academy of Sciences（河南省科学院物理研究所）
Zirong Chen, Dan Chi, Jinmian Li, Junle Pei
备注：
29 pages, 8 figures, Accepted for publication in PRD
We investigate the atmospheric production and subsequent detection of sub-GeV dark mesons within the framework of a confining dark sector coupled to the Standard Model (SM) via a $U(1)_{\text{D}}$ vector portal. High-energy cosmic ray interactions in the atmosphere produce dark quarks through proton bremsstrahlung, rare decays of Standard Model mesons, and Drell-Yan processes, which subsequently hadronize into dark mesons. We adopt a modified Quark Combination Model to describe the non-perturbative dark hadronization process, allowing for a detailed event-level characterization of the dark meson flux. We simulate the flux and the interactions of these relativistic dark mesons in the Jiangmen Underground Neutrino Observatory (JUNO) using the GENIE generator, considering both elastic scattering off nuclei and deep inelastic scattering channels. Adopting a LES-inspired conservative signal definition with $15~\mathrm{MeV}<E_{\rm vis}<100~\mathrm{MeV}$ and vetoing events containing final-state neutrons, we derive projected $90\%$ C.L. sensitivities to the coupling strength between the dark gauge boson and the SM sector for a $20~\mathrm{kton}\!\cdot\!\mathrm{year}$ exposure. For the representative benchmark masses $m_{Z^\prime}=0.001$, $0.01$, and $0.1~\mathrm{GeV}$, the projected JUNO reach corresponds to $g_{\rm SM}^{90}=6.48\times10^{-5}$, $7.75\times10^{-5}$, and $2.37\times10^{-4}$, respectively. This reach is found to be only mildly sensitive to order-one variations of the hadronization parameter, as illustrated by the choices $κ_β=1/3,\,1,$ and $3$.
Novel bounds on neutrino portal dark matter from leptonic meson decays
Asia Pacific Center for Theoretical Physics（亚太理论物理中心）；Pohang University of Science and Technology（浦项科技大学）；Kyushu University（九州大学）；Kindai University（近畿大学）
Constraints on dark axion portal: missing energy and fermion EDMs
Institute for Nuclear Research（核物理研究所）；Bogoliubov Laboratory of Theoretical Physics, JINR（约飞联合核子研究所玻戈留博夫理论物理实验室）；Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR) of ANID（智利国家研究与创新发展署高能前沿亚原子物理千年研究所）；Institut für Theoretische Physik, Universität Tübingen（蒂宾根大学理论物理研究所）；Kepler Center for Astro and Particle Physics（开普勒天体与粒子物理中心）；Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andres Bello（安德烈斯贝略大学精确科学学院理论与实验粒子物理中心）；Matrosov Institute for System Dynamics and Control Theory SB RAS（俄罗斯科学院西伯利亚分院马特罗索夫系统动力学与控制理论研究所）；Tomsk Polytechnic University（托木斯克理工大学）
Millennium Institute for Subatomic Physics at the High-Energy Frontier (SAPHIR) of ANID（智利国家研究与创新署高能前沿亚原子物理千年研究所）；Center for Theoretical and Experimental Particle Physics, Facultad de Ciencias Exactas, Universidad Andres Bello（安第斯贝尔纳多·奥伊金斯大学精确科学学院理论与实验粒子物理中心）；Institut für Theoretische Physik, Universität Tübingen, Kepler Center for Astro and Particle Physics（蒂宾根大学理论物理系开普勒天体与粒子物理中心）；Bogoliubov Laboratory of Theoretical Physics, JINR（杜布纳联合核子研究所鲍戈留博夫理论物理实验室）；Matrosov Institute for System Dynamics and Control Theory SB RAS（俄罗斯科学院西伯利亚分院马特罗索夫系统动力学与控制理论研究所）
我们回顾并修正了标量门的现象学--一种新的质量在GeV范围内的标量粒子与希格斯玻色子混合。特别是，我们认为生产渠道$B\to S K_1(1270)$和$B\to S K_0^*(700)$，并表明他们的贡献是显着的。我们扩展了以前的分析，通过比较生产标量介子衰变，希格斯玻色子玻色子和直接生产通过质子韧致辐射，深非弹性散射和相干散射的核。生产通道的相对效率取决于光束的能量，我们考虑了DUNE，SHiP和LHC实验的能量。我们提出我们的结果的形式直接适合于计算实验灵敏度。
Hyperonic compact stars with vector portal dark matter
Utkal University（乌塔卡尔大学）；University of Coimbra（科英布拉大学）；Indian Institute of Science Education and Research Berhampur（印度科学教育研究学院贝尔汉普尔分校）；National Institute of Science Education and Research（国家科学教育研究中心）；Homi Bhabha National Institute（霍米·巴巴国立研究所）；Institute of Physics Bhubaneswar（布巴内斯瓦尔物理研究所）；Indian Institute of Technology Bhilai（印度理工学院比莱分校）
Center for Quantum Mathematics and Physics (QMAP), Department of Physics, University of California, Davis（加州大学戴维斯分校量子数学与物理中心（QMAP））；Center for Future High Energy Physics, Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所未来高能物理中心）；China Center of Advanced Science and Technology（中国高等科学技术中心）；International Center of Theoretical Physics-Asia Pacific, University of Chinese Academy of Sciences（中国科学院大学亚太理论物理国际中心）；Institute of High Energy Physics（高能物理研究所）；Department of Physics, Brown University（布朗大学物理系）；Departament de Física, Universitat Autònoma de Barcelona（巴塞罗那自治大学物理系）；IFAE and BIST（IFAE和BIST）
