Probing the flavor-specific scalar mediator for the muon(g-2)deviation, the proton radius puzzle and the light dark matter production

作     者：Bin Zhu Xuewen Liu Bin Zhu;Xuewen Liu

作者机构：Department of PhysicsYantai UniversityYantai 264005China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2022年第65卷第3期

页      面：39-48页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.11805161) the Natural Science Foundation of Shandong Province(Grant No.ZR2018QA007) the Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education,Science and Technology(Grant No.NRF-2019R1A2C2003738) the Korea Research Fellowship Program through the NRF funded by the Ministry of Science and ICT(Grant No.2019H1D3A1A01070937) Xuewen Liu was supported by the National Natural Science Foundation of China(Grant Nos.11947034,and 12005180) the Natural Science Foundation of Shandong Province(Grant No.ZR2020QA083) supported by the Project of Shandong Province Higher Educational Science and Technology Program(Grant No.2019KJJ007) 

主　　题：muon g-2 proton radius puzzle DM relic density precision calculation 

摘      要：Flavor-specific scalar bosons exist in various Standard Model extensions and couple to a single generation of fermions via a global flavor symmetry breaking mechanism. Given this strategy, we propose a Me V flavor-specific scalar model in dimension-5 operator series, which explains the muon g-2 anomaly and proton radius puzzle by coupling with the muon and down-quark at the same time. The framework is consistent with the null result of high-intensity searches. Specifically, the supernova constraints for muon couplings become weakened by including the contribution of down-quark interaction. The parameter space for explaining muon g-2 discrepancy is available when 10% energy deposition is required in the energy explosion process in the supernova,but this is ruled out by the 1% energy deposition requirement. We also investigate the searches for mediator and dark matter and the resulting constraints on viable parameter space such as nuclear physics constraints, direct detection for light boosted dark matter, and possible CMB constraints. When compared with conventional dark matter production, light dark matter production has two additional modifications: bound state formation and early kinetic equilibrium decoupling. We are now looking into the implications of these effects on the relic density of light dark matter.