[ital B][sub [ital s]][r arrow][gamma][gamma] decay in the two-Higgs-doublet model

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.1176· OSTI ID:6330445

Aliev, T M; Turan, G ^[1]

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1. Physics Department, Middle East Technical University, 06531 Ankara (Turkey)

The rare [ital B][sub [ital s]][r arrow][gamma][gamma] decay has been investigated in the framework of the two-Higgs-doublet model. It is shown that the branching ratio has a great enhancement in comparison to the standard model (SM) prediction. We have found that the ratio of the square of the [ital CP]=1 to [ital CP]=[minus]1 amplitudes, [vert bar][ital A][sup +][vert bar][sup 2]/[vert bar][ital A][sup [minus]][vert bar][sup 2], which is always less than one in the SM, becomes greater than one for some values of [ital m][sub [ital H]]/[ital m][sub [ital t]]. We have also calculated the direct [ital CP]-violating parameter [epsilon][sub [gamma][gamma]([minus])][sup [prime]]. It is found that for [ital K][r arrow][gamma][gamma] decay its value is greater than the one which follows from the SM, while for [ital B][sub [ital s]][r arrow][gamma][gamma] decay both models have the same predictions. Finally, we compare our results on [ital B][sub [ital s]][r arrow][gamma][gamma] decay with the results of [ital B][sub [ital s]][r arrow][mu][sup +][mu][sup [minus]] and [ital B][sub [ital s]][r arrow][mu][sup +][mu][sup [minus]] decays which are of the same order of the coupling constant.

• OSTI ID: 6330445
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:3; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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