期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 10, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP10(2020)080
关键词
Beyond Standard Model; Cosmology of Theories beyond the SM
资金
- Estonian Research Council [PRG434]
- Estonian Ministry of Education and Research [IUT23-6]
- European Regional Development Fund
- programme Mobilitas Pluss grant [MOBTT5]
- European Union through the ERDF Centre of Excellence program [TK133]
- Academy of Finland [320123, 310130]
- Academy of Finland (AKA) [320123, 320123] Funding Source: Academy of Finland (AKA)
Pseudo-Goldstone dark matter is a thermal relic with momentum-suppressed direct-detection cross section. We study the most general model of pseudo-Goldstone dark matter arising from the complex-singlet extension of the Standard Model. The new U(1) symmetry of the model is explicitly broken down to a CP-like symmetry stabilising dark matter. We study the interplay of direct-detection constraints with the strength of cosmic phase transitions and possible gravitational-wave signals. While large U(1)-breaking interactions can generate a large direct-detection cross section, there are blind spots where the cross section is suppressed. We find that sizeable cubic couplings can give rise to a first-order phase transition in the early universe. We show that there exist regions of the parameter space where the resulting gravitational-wave signal can be detected in future by the proposed Big Bang Observer detector.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据