Electroweak baryogenesis in aligned two Higgs doublet models

Abstract

We evaluate the baryon number abundance based on the charge transport scenario of top quarks in the CP-violating two Higgs doublet model, in which Yukawa interactions are aligned to avoid dangerous flavor changing neutral currents, and coupling constants of the lightest Higgs boson with the mass $125\mathrm{GeV}$ coincide with those in the standard model at tree level to satisfy the current LHC data. In this model, the severe constraint from the electric dipole moment of electrons, which are normally difficult to be satisfied, can be avoided by destructive interferences between CP-violating phases in Yukawa interactions and scalar couplings in the Higgs potential. Viable benchmark scenarios are proposed under the current available data and basic theoretical bounds. We find that the observed baryon number can be reproduced in this model, where masses of additional Higgs bosons are typically $300$--$400\mathrm{GeV}$. Furthermore, it is found that the triple Higgs boson coupling is predicted to be $35$--$55\%$ larger than the standard model value.

35 pages, 5 figures, 1 table

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• Probing double-aligned two Higgs doublet models at LHC
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• Strongly first-order electroweak phase transition by relatively heavy additional Higgs bosons
• CP Violation in a Model with Higgs Triplets
• Bubble Trouble: a Review on Electroweak Baryogenesis
• Intermediate Charge-Breaking Phases and Symmetry Non-Restoration in the 2-Higgs-Doublet Model
• Rare top-quark decays $t\to cg(g)$ in the aligned two-Higgs-doublet model
• The Electric Dipole Moment of the electron in the decoupling limit of the aligned Two-Higgs Doublet Model
• Dual electroweak phase transition in the two-Higgs-doublet model with the $S_3$ discrete symmetry
• Benchmarking a fading window: electroweak baryogenesis in the C2HDM, LHC constraints after Run 2 and prospects for LISA
• Scattering Entanglement Entropy and Its Implications for Electroweak Phase Transitions
• Electroweak baryogenesis in the three-loop neutrino mass model with dark matter
• Exploring Wrong Sign Scenarios in the Yukawa-Aligned 2HDM
• Gravitational Wave Production and Baryogenesis in a Simple Left-Right model
• Testing CP-violation in a Heavy Higgs Sector at CLIC
• Twin electroweak bubble nucleation and gravitational wave under the $S_3$ symmetry of two-Higgs-doublet model