Radiative $B \to K^* γ$ transition in QCD

Details Radiative $B \to K^* γ$ transition in QCD Radiative $B \to K^* γ$ transition in QCD

1993-08-12

arxiv.org/abs/hep-ph/9308264v1

Phys.Lett. B317 (1993) 183-189

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, plus cover page, 1 figure (not included),Latex, BARI-TH/93-150, July 1993

Scientific paper

10.1016/0370-2693(93)91590-J

We evaluate the branching ratios of the radiative decays $B \to K^* \gamma $, and $B \to K_1 \gamma $ in the framework of three-point function QCD sum rules. We find: $ \Gamma(B \to K^* \gamma) / \Gamma(b \to s \gamma) = 0.17 \pm 0.05$ and $ \Gamma(B \to K_1 \gamma) / \Gamma(b \to s \gamma) = 0.30 \pm 0.15$. We also study, in the infinite quark mass limit, the connection between the form factor of the radiative $B \to K^* \gamma $ transition and the weak hadronic form factors entering the semileptonic B-meson decays.

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