Cosmological phase transitions, gravitational waves and self-interacting dark matter in the singlet extension of MSSM

Abstract

In 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.

20 pages, 3 figures. arXiv admin note: text overlap with arXiv:1705.02358 by other authors

References in corpus (9)

• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• Too Big to Fail in the Local Group
• Resonant Dark Forces and Small Scale Structure
• The velocity function in the local environment from LCDM and LWDM constrained simulations
• A robust upper limit on N_eff from BBN, circa 2011
• M31 Satellite Masses Compared to LCDM Subhaloes
• Self-Interacting Dark Matter through the Higgs Portal
• Dark Matter in the Singlet Extension of MSSM: Explanation of Pamela and Implication on Higgs Phenomenology
• Gravitational waves from first-order phase transitions in Majoron models of neutrino mass

Cited by in corpus (6)

• Implications of Nano-Hertz Gravitational Waves on Electroweak Phase Transition in the Singlet Dark Matter Model
• Electroweak Phase Transition in a Right-Handed Neutrino Superfield Extended NMSSM
• A concise review on some Higgs-related new physics models in light of current experiments
• Asymmetric dark matter with a spontaneously broken $U(1{)}^{\prime }$: self-interaction and gravitational waves
• Probing Self-Interacting Dark Matter via Gravitational-Wave Background from Eccentric Supermassive Black Hole Mergers
• Revisiting Puffy Dark Matter with Novel Insights: Partial Wave Analysis