Measurement of $B \to K^{*} γ$ Branching Fractions and Charge Asymmetries

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26 February 2002

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 88 (10) , 101805
https://doi.org/10.1103/physrevlett.88.101805

Abstract

The branching fractions of the exclusive decays

B^{0} \to K^{* 0} γ

and

B^{+} \to K^{* +} γ

are measured from a sample of

(22.74 \pm 0.36) \times 10^{6}

B \bar{B}

decays collected with the BABAR detector at the PEP-II asymmetric

e^{+} e^{-}

collider. We find

B (B^{0} \to K^{* 0} γ) = [4.23 \pm 0.40 (stat) \pm 0.22 (syst)] \times 10^{- 5}

,

B (B^{+} \to K^{* +} γ) = [3.83 \pm 0.62 (stat) \pm 0.22 (syst)] \times 10^{- 5}

and constrain the

CP

-violating charge asymmetry to be

- 0.170 < A_{CP} (B \to K^{*} γ) < 0.082

at

90 %

C.L.

Keywords

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This publication has 9 references indexed in Scilit:

b→sγ and supersymmetry with large tanβ
Physics Letters B, 2001
Study of Exclusive Radiative $B$ Meson Decays
Physical Review Letters, 2000
B¯→K*γfromD→K*l¯ν
Physical Review D, 1999
Direct $CP$ violation in $\vec{B} X_{s} γ$ decays as a signature of new physics
Physical Review D, 1998
Searching for supersymmetry in rare $B$ decays
Physical Review D, 1997
QCD-improved $b \to s γ$ constraints on the minimal supergravity model
Physical Review D, 1997
Tau decays with one charged particle plus multiple $π^{0}$ ’s
Physical Review Letters, 1993
Exclusive hadronic decays ofB mesons
The European Physical Journal C, 1990
New constraints on squark and gluino masses from radiative b decays
Physics Letters B, 1987