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(Department of Physics,Chongqing University,Chongqing 401331,China;Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing 401331,China;School of Science,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;CAS key laboratory of theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China,University of Chinese Academy of Sciences,Beijing 100190,China;Department of Physics and Astronomy,University of Oklahoma,Norman,OK 73019,USA;School of Physics,Southeast University,Nanjing 211189,China;Department of Physics and McDonnell Center for the Space Sciences,Washington University,St.Louis,MO 63130,USA;Center for High Energy Physics,Peking University,Beijing 100871,China)

机构地区：[1]Department of Physics,Chongqing University,Chongqing 401331,China [2]Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing 401331,China [3]School of Science,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [4]CAS key laboratory of theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China,University of Chinese Academy of Sciences,Beijing 100190,China [5]Department of Physics and Astronomy,University of Oklahoma,Norman,OK 73019,USA [6]School of Physics,Southeast University,Nanjing 211189,China [7]Department of Physics and McDonnell Center for the Space Sciences,Washington University,St.Louis,MO 63130,USA [8]Center for High Energy Physics,Peking University,Beijing 100871,China

出　　处：《Chinese Physics C》2021年第11期45-59,共15页中国物理C（英文版）

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)

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 theory.It 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 transition.The stochastic gravitational waves(GWs)produced at the phase transition can be probed in future GW experiments.The GW searches prefer a relatively light S at the TeV-scale;however,this is difficult to detect directly at future high-energy colliders.

关 键 词：LEPTOGENESIS first-order phase transition gravitational wave 

分 类 号：P159[天文地球—天文学]