Cosmological implications of a B−L charged hidden scalar:leptogenesis and gravitational waves

作     者：Ligong Bian Wei Cheng Huai-Ke Guo Yongchao Zhang 边立功;程伟;郭怀珂;张永超

作者机构：Department of PhysicsChongqing UniversityChongqing 401331China Chongqing Key Laboratory for Strongly Coupled PhysicsChongqing 401331China School of ScienceChongqing University of Posts and TelecommunicationsChongqing 400065China CAS key laboratory of theoretical PhysicsInstitute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190ChinaUniversity of Chinese Academy of SciencesBeijing 100190China Department of Physics and AstronomyUniversity of OklahomaNormanOK 73019USA School of PhysicsSoutheast UniversityNanjing 211189China Department of Physics and McDonnell Center for the Space SciencesWashington UniversitySt.LouisMO 63130USA Center for High Energy PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2021年第45卷第11期

页      面：45-59页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China (12075041, 12047564) the Fundamental Research Funds for the Central Universities of China (2021CDJQY-011, 2020CDJQY-Z003) Chongqing Natural Science Foundation (cstc2020jcyj-msxmX0814) Supported by the China Postdoctoral Science Foundation (2019TQ0329) partially Supported by the U.S. Department of Energy grant (DE-SC0009956) supported by the US Department of Energy (DE-SC0017987) 

主　　题：leptogenesis first-order phase transition gravitational wave 

摘      要：In this study,we investigated the cosmological implications of a complex singlet scalar S with non-trivial B−L charges in the conformal U(1)B−L *** was found that,in a sizable region of parameter space,S may disturb the resonant leptogenesis mechanism,which is used to generate baryon asymmetry,and affect the symmetry breaking dynamics in the strong first order phase *** stochastic gravitational waves(GWs)produced at the phase transition can be probed in future GW *** GW searches prefer a relatively light S at the TeV-scale;however,this is difficult to detect directly at future high-energy colliders.