We analyze the thermal history of 2HDM and determine parameter regions featuring a first-order electroweak phase transition (FOEWPT) also much less studied phenomena like high-temperature (EW) symmetry non-restoration possibility vacuum trapping (i.e. Universe remains trapped in an EW-symmetric throughout cosmological evolution, despite at $T=0$ EW breaking is deeper). show that presence impede...

In the two-Higgs-doublet model, different Higgs doublets can be viewed as components of a generic ”hyperspinor”. We decompose the Higgs potential of this model into irreducible representations of the SU(2) group of transformations of this hyperspinor. We discuss invariant combinations of Higgs potential parameters λi that arise in this decomposition and provide simple and concise sets of condit...

The mixing induced time dependent CP asymmetry, direct CP asymmetry, and branching ratio in B → ΦK S in a model III 2HDM are calculated, in particular, neutral Higgs boson contributions are included. It is shown that satisfying all the relevant experimental constraints, for time dependent CP asymmetry S φK the model III can agree with the present data, s φ k = −0.39 ± 0.41, within the 1σ error,...

We study the phenomenology of the µ − τ and e − τ lepton flavour violation (LFV) in a general two Higgs Doublet Model (2HDM) including the supersymmetric case. We consider several LFV decay modes of the charged fermion τ , namely τ → l j γ, τ → l j l k l k and τ → l j η. The predictions and the correlations among the rates of the above processes are computed. In particular, it is shown that τ →...

We discuss scenarios with wrong-sign (WS) Yukawa couplings for the discovered Higgs boson in Yukawa-aligned two doublet model. In WS scenario, down-type quarks and/or charged leptons have an opposite sign as compared to those of standard model, which can be consistent current flavour data and signal strengths. The phenomenology additional bosons such a scenario significantly different from that...