Radiative B ---> K* gamma transition in QCD - INSPIRE

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Radiative B ---> K* gamma transition in QCD

P. Colangelo
(
- INFN, Bari
)
,
C.A. Dominguez
(
- SISSA, Trieste
)
,
G. Nardulli
(
- INFN, Bari and
- Bari U.
)
,
N. Paver
(
- Trieste U. and
- INFN, Trieste
)

Jul, 1993

12 pages

Published in:

Phys.Lett.B 317 (1993) 183-189

e-Print:

hep-ph/9308264 [hep-ph]

DOI:

10.1016/0370-2693(93)91590-J

Report number:

BARI-TH-93-150,
SISSA-114-93-EP,
UTS-DFT-93-19

View in:

ADS Abstract Service

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Abstract:

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.

B: radiative decay
radiative decay: B
B: branching ratio
quantum chromodynamics: sum rule
form factor: decay
decay: form factor
n-point function: 3
B --> K*(892) photon
B --> K1(1400) photon

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Figures(0)

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