0 Branching ratios and CP - violating asymmetries of B s → h 1 h 2 decays in the general two - Higgs doublet models

Abstract

Based on the low-energy effective Hamiltonian with the generalized factorization, we calculate the new physics contributions to branching ratios and CP-violating asymmetries of the charmless hadronic decays Bs → h1h2 in the general two-Higgs doublet models. In models I and II, the new physics corrections are always small in size and will be masked by other larger known theoretical uncertainties. In model III, the new physics corrections to QCD penguin-dominated decays Bs → K0η( ′),K+K−∗, φφ, etc., are large in size and insensitive to the variations of MH+ and the effective number of colors N eff c . For treeor electroweak penguin-dominated decay modes, however, the new physics corrections are very small in size. For Bs → K+K−∗ and other seven decay modes, the branching ratios are at the level of (1 − 3) × 10−5 and will be measurable at the future hadron colliders with large b production. Among the studied 39 BS meson decay modes, only the decay Bs → K0∗η′ and Bs → K+K−∗ have a CP-violating asymmetry ACP larger than thirty percent in magnitude, and Bs → K+K−∗ decay seems to be the “best” channel to find CP violation of Bs system through studies of two-body charmless decays of Bs meson. PACS numbers: 13.25.Hw, 12.15.Ji, 12.38.Bx, 12.60.Fr E-mail: zxiao@ibm320h.phy.pku.edu.cn E-mail: csli@ibm320h.phy.pku.edu.cn

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Cite this paper

@inproceedings{Zhang20000BR, title={0 Branching ratios and CP - violating asymmetries of B s → h 1 h 2 decays in the general two - Higgs doublet models}, author={Dong Xin Zhang and Zhenjun Xiao and Chong Li}, year={2000} }