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

被引：0
|
作者：
边立功 [1 ,2 ]
程伟 [3 ,4 ,5 ]
郭怀珂 [6 ]
张永超 [7 ,8 ,9 ]
机构：
[1] Department of Physics,Chongqing University
[2] Chongqing Key Laboratory for Strongly Coupled Physics
[3] School of Science,Chongqing University of Posts and Telecommunications
[4] CAS key laboratory of theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences
[5] University of Chinese Academy of Sciences
[6] Department of Physics and Astronomy,University of Oklahoma
[7] School of Physics,Southeast University
[8] Department of Physics and McDonnell Center for the Space Sciences,Washington University
[9] Center for High Energy Physics,Peking University
来源：
Chinese Physics C | 2021年 / 45卷 / 11期
基金：
中央高校基本科研业务费专项资金资助; 中国博士后科学基金; 中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
P159 [宇宙学];
学科分类号：
070401 ;
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.
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页码：49 / 63
页数：15
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