B_s --> γγdecay in the two Higgs doublet model with flavor changing neutral currents

Details B_s --> γγdecay in the two Higgs doublet model with flavor changing neutral currents B_s --> γγdecay in the two Higgs doublet model with flavor changing neutral currents

1998-03-26

arxiv.org/abs/hep-ph/9803459v2

Phys.Rev. D58 (1998) 095014

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 17 figures

Scientific paper

10.1103/PhysRevD.58.095014

We calculate the leading logarithmic QCD corrections to the decay B_{s} -->\gamma\gamma in the two Higgs doublet model with tree level flavor changing currents (model III) including O_7 type long distance effects. Further, we analyse the dependencies of the branching ratio Br(B_{s} --> \gamma\gamma)$ and the ratio of CP-even and CP-odd amplitude squares, R=|A^{+}|^2/|A^{-}|^2, on the charged Higgs mass m_{H^{\pm}} and the selected model III parameters \xi^{U,D} including the leading logarithmic QCD corrections. It is found that to look for charged Higgs effects, the measurement of the branching ratio Br(B_{s} --> \gamma\gamma)$ is promising.

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