Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-06-11
Phys.Rev.Lett.103:211802,2009
Physics
High Energy Physics
High Energy Physics - Experiment
7 pages, 11 postscript figures, submitted to Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.103.211802
We present an analysis of the decays B0 -> K*0 gamma and B+ -> K*+ gamma using a sample of 383 million BBbar events collected with the BaBar detector at the PEP2 asymmetric energy B factory. We measure the branching fractions BF[B0 -> K*0 Gamma] = 4.47 +/- 0.10 +/- 0.16 x 10^-5 and BF[B+ -> K*+ Gamma] = 4.22 +/- 0.14 +/- 0.16 x 10^-5. We constrain the direct CP asymmetry to be -0.033 < Acp < 0.028 and the isopin asymmetry to be 0.017 < \Delta0- < 0.116, where the limits are determined at the 90% confidence interval and include both statistical systematic uncertainties.
"The BABAR Collaboration
Aubert B.
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