B_s ---> γγdecay in the model III and 3HDM(O_2) with CP violating effects

Abstract

We analyse the CP asymmetry for B_{s} -->γγin the two Higgs doublet model with tree level flavor changing currents (model III) and three Higgs doublet model with O_2 symmetry in the Higgs sector, including O_{7} type long distance effects. Further, we study the dependencies of the branching ratio Br(B_{s} --> γγ)$ and the ratio of CP-even and CP-odd amplitude squares, R=|A^{+}|^2/|A^{-}|^2, on the CP parameter sin θ. We found that, there is a weak CP asymmetry, at the order of 10^{-4}. Besides, the branching ratio Br(B_{s} --> γγ), and also R ratio, is not sensitive to the CP parameter for |\frac{\barξ^{U}_{N,tt}}{\barξ^{D}_{N,bb}}|<1.

17 pages, 11 figures

References in corpus (11)

• Next-to-Leading QCD Corrections to B -> X_s gamma: Standard Model and Two-Higgs Doublet Model
• Phase Effect of A General Two-Higgs-Doublet Model in $b\to s\gamma$
• QCD corrections to b -> s gamma gamma induced decays: B -> X_s gamma gamma and B_s -> gamma gamma
• B_s --> γγdecay in the two Higgs doublet model with flavor changing neutral currents
• QCD Corrections to $b\to s\gamma \gamma$ and Exclusive $B_s\to \gamma \gamma$ Decay
• b -> s γdecay in the two Higgs doublet model with flavor changing neutral currents
• Leading logarithmic QCD corrections to the B_s --> γγdecay rate including long-distance effects through B_s --> ϕγ--> γγ
• Leading logarithmic QCD corrections to the B_s --> γγdecays in the two Higgs doublet model
• Estimate of the long-distance contribution through b --> s ψto the B_{s} --> γγdecay rate
• Exclusive B --> K^* l^+ l^-$ decay in the three Higgs doublet model
• The CP asymmetry for B--> K^* l^+ l^- decay in the general two Higgs doublet model

Cited by in corpus (2)

• The Rare Decay D^0 -> gamma gamma
• B_{s,d}\to γγdecay in the model with one universal extra dimension