Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-04-03
Phys.Lett. B405 (1997) 297-304
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 3 figures, also available via anonymous ftp at ftp://ftp.kek.jp/kek/preprints/TH/TH-484
Scientific paper
10.1016/S0370-2693(97)00617-5
Rare $b$ decay processes are analyzed in the multi-Higgs doublet model. Taking account of the constraint from the $b\to s \gamma$ process, the branching ratio and the forward-backward asymmetry of the final leptons for the $b\to s \ell^+ \ell^-$ process are calculated. It is shown that the branching ratio can be a few times larger than the standard model prediction and the asymmetry can be significantly different from that in the standard model. Combining these observable quantities it is possible to determine complex coupling constants associated with the charged Higgs mixing matrix. The CP violating charge asymmetry in the $b\to s \ell^+ \ell^-$ process and the branching ratio of the $b\to s \nu\bar{\nu}$ process are also calculated.
Okada Yasuhiro
Shimizu Yasuhiro
Tanaka Minoru
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