Rare B Decays in the Standard Model

Abstract

We discuss the electromagnetic-penguin-dominated radiative B decays $B\to X_s+\gamma ,B^{\pm (0)}\to K^{\ast \pm (0)}+\gamma$, and $B_s\to \varphi +\gamma$ in the context of the standard model (SM) and their Cabibbo-Kobayashi-Maskawa (CKM)-suppressed counterparts, $B\to X_d+\gamma$, $B^{\pm }\to {\rho }^{\pm }+\gamma ,B^0\to ({\rho }^0,\omega )+\gamma$, and $B_s\to K^{\ast 0}+\gamma$, using QCD sum rules for the exclusive decays. The importance of these decays in determining the parameters of the CKM matrix is emphasized. The semileptonic decays $B\to X_s{\ell }^{+}{\ell }^{-}$ are also discussed in the context of the SM and their role in determining the Wilson coefficients of the effective theory is stressed. Comparison with the existing measurements are made and SM-based predictions for a large number of rare B decays are presented.

Latex2e, 25 pages, 4 figures (require epsf.sty, rotate). Invited talk. To be published in Proceedings of the 4th International Workshop 'Beauty-96', Roma, June 17 - 21, 1996

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• Calculation of Long-Distance Effects in Exclusive Weak Radiative Decays of B-Mesons
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• First limit on inclusive $B\to X_s\nu \bar{\nu }$ decay and constraints on new physics
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Cited by in corpus (8)

• Bremsstrahlung corrections to the decay $b\to s\gamma$
• Rare exclusive semileptonic b -> s transitions in the Standard Model
• Exclusive B-> K_{1}l ^{+}l ^{-} decay in model with single universal extra dimension
• Rare decays B -> (K, K*) (l+ l-, nu bar{nu}) in the quark model
• Physics at LHC
• Form factors, branching ratio and forward-backward asymmetry in B -> K_{1}ell ^{+} ell ^{-} decays
• Rare b Decays
• Imprint of SUSY in radiative B-meson decays