Radiative rare $B$ decays revisited

Abstract

We reexamine contributions of higher $K$-resonances to the radiative rare decays $b\rar sγ$ in the limit where both $b$- and $s$-quark are considered heavy. Using the non-relativistic quark model, and the form factor definitions consistent with the HQET covariant trace formalism, we find significant disagreement with previous work which also used heavy quark symmetry, and excellent agreement with experimental results. In particular, the two largest fractions of the inclusive $b\rar sγ$ branching ratio are found to be $(16.8\pm 6.4)\%$ for $B\rar K^{*}(892)γ$ and $(6.2\pm 2.9)\%$ for $B\rar K_{2}^{*}(1430)γ$ decays. We also compare the contribution from the radiative decays into the eight $K$-meson states to the inclusive experimental $b\rar sγ$ mass distribution.

Latex (uses epsf macro), 20 pages of text, 1 postscript figure included

References in corpus (5)

• Measurement of the B -> D^* l nu Branching Fractions and |Vcb|
• $b\to s\gamma$ AND $b\to sg$: A THEORETICAL REAPPRAISAL
• $B \rar K^* \ γ$} from Hybrid Sum Rule
• Hadronic matrix elements and radiative $B\to K^{\ast }\gamma$ decay
• A one parameter representation for the Isgur-Wise function

Cited by in corpus (23)

• Study of Exclusive Radiative B Meson Decays
• Measurements of the B -> X_s gamma Branching Fraction and Photon Spectrum from a Sum of Exclusive Final States
• B to tensor meson form factors in the perturbative QCD approach
• Measuring the Photon Helicity in Radiative B Decays
• Covariant Light-Front Approach for B to K* gamma, K_1 gamma, K*_2 gamma Decays
• $B\to K_1\gamma$ Decays in the Light-Cone QCD Sum Rules
• Photon polarization in radiative B decays
• Observation of B+ --> K1(1270)+ gamma
• Radiative B Meson Decays into K pi gamma and K pi pi gamma Final States
• Measurement of Branching Fractions for B0 ->K*2(1430)0 gamma and B+ -> K*2(1430)+ gamma
• Measurement of the B0 -> K2*(1430)0 gamma and B+ -> K2*(1430)+ gamma branching fractions
• B to V, A, T Tensor Form Factors in the Covariant Light-Front Approach: Implications on Radiative B Decays
• Rare radiative B decays to orbitally excited K mesons
• B -> K1 gamma and tests of factorization for two-body non leptonic Bdecays with axial-vector mesons
• B -> K^* gamma from D -> K^* l nu
• Radiative B decays to the axial $K$ mesons at next-to-leading order
• Reexamining the photon polarization in $B\to K\pi \pi \gamma$
• Rare radiative B decay to the orbitally excited K_2^*(1430) meson
• Radiative and Electroweak Rare B Decays
• Amplitude analysis of the radiative decay $B_s^0\to K^{+}{K}^{-}\gamma$
• P and CP violation in B physics
• Potential Models for Radiative Rare B Decays
• Radiative B to tensor meson decays at NLO in SCET