Author:
Wang Wenyu,Xie Ke-Pan,Xu Wu-Long,Yang Jin Min
Abstract
AbstractIn the minimal supersymmetric standard model (MSSM) extended by a singlet superfield, when the coupling between the singlet sector and the MSSM sector is tiny, the singlet sector can be a quasi dark sector with supersymmetry (SUSY). We investigate the cosmological phenomena in this scenario and obtain the following observations: (i) In the parameter space solving the small cosmological scale anomalies via self-interacting singlino dark matter (SIDM), a first-order phase transition (FOPT) can readily happen but requires rather light dark matter below MeV; (ii) The corresponding parameter space indicated by FOPT and SIDM can be partially covered by detecting the phase-transition gravitational waves (GWs) at the near-future projects, such as LISA, TianQin and Taiji. Therefore, the recently developed GW astronomy could be a novel probe to such a SUSY scenario.
Funder
the CAS Center for Excellence in Particle Physics
Natural Science Foundation of China
Peng-Huan-Wu Theoretical Physics Innovation Center
Key R &D Program of Ministry of Science and Technology of China under number
Key Research Program of the Chinese Academy of Sciences under grant
Publisher
Springer Science and Business Media LLC
Subject
Physics and Astronomy (miscellaneous),Engineering (miscellaneous)
Cited by
7 articles.
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