Gravitational Waves, baryon asymmetry of the universe and electric dipole moment in the CP-violating NMSSM

2017/04/30 by Ligong Bian, Huai-Ke Guo, Jing Shu
Computer Science · Physics and Astronomy · #Baryogenesis #Baryon asymmetry #Computational Physics and Python Applications #Electroweak interaction #Higgs boson #Higgs sector #Large Hadron Collider #Minimal Supersymmetric Standard Model #Neutrino Physics Research #Particle physics theoretical and experimental studies #Sphaleron #Standard Model (mathematical formulation) #hep-ph

paper · pdf · doi:10.1088/1674-1137/42/9/093106

published as Chinese Physics C Vol. 42, No. 9 (2018) 093106 · 17 pages, 5 figures

openalex publication_date 2018/08/01 · arxiv created 2018/08/18 · arxiv updated 2018/09/26 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05

Abstract

In this work, we make the first study of electroweak baryogenesis (EWBG) based on the LHC data in the CP-violating next-to-minimal supersymmetric model (NMSSM) where a strongly first order electroweak phase transition (EWPT) is obtained in the general complex Higgs potential. With representative benchmark points which pass the current LEP and LHC constraints, we demonstrate the structure of EWPT for those points and how a strongly first order EWPT is obtained in the complex NMSSM where the resulting gravitational wave production properties are found to be within the reaches of future space-based interferometers like BBO and Ultimate-DECIGO. We further calculate the generated baryon asymmetries where the CP violating sources are (1): higgsino-singlino dominated, (2): higgsino-gaugino dominated or (3): from both sources. It is shown that all three representing scenarios could evade the strong constraints set by various electric dipole moments (EDM) searches where cancellations among the EDM contributions occur at the tree level (higgsino-singlino dominated) or loop level (higgsino-gaugino dominated). The 125 GeV SM like Higgs can be either the second lightest neutral Higgs H 2 or the third lightest neutral Higgs H 3 . Finally, we comment on the future direct and indirect probe of CPV in the Higgs sector from the collider and EDM experiments.

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