Rare B Decays in the Standard Model

Details Rare B Decays in the Standard Model Rare B Decays in the Standard Model

1996-10-11

arxiv.org/abs/hep-ph/9610333v1

Nucl.Instrum.Meth. A384 (1996) 8-16

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex2e, 25 pages, 4 figures (require epsf.sty, rotate). Invited talk. To be published in Proceedings of the 4th International

Scientific paper

10.1016/S0168-9002(96)00908-4

We discuss the electromagnetic-penguin-dominated radiative B decays $B \to X_s + \gamma, ~B^{\pm (0)} \to K^{*\pm (0)} + \gamma$, and $B_s \to \phi + \gamma$ 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 $B_s \to K^{* 0} + \gamma$, 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.

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