We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×106 BB̄ events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B0→K*0γ)=(4. 47±0.10±0.16)×10-5 and B(B+→K*+γ)=(4. 22±0.14±0.16)×10-5. We constrain the direct CP asymmetry to be -0.033<A(B→K*γ)<0.028 and the isospin asymmetry to be 0.017<Δ0-<0.116, where the limits are determined by the 90% confidence interval and include both the statistical and systematic uncertainties. © 2009 The American Physical Society.

Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Measurement of B→K*(892)γ branching fractions and CP and isospin asymmetries. PHYSICAL REVIEW LETTERS, 103(21), 1-7 [10.1103/PhysRevLett.103.211802].

Measurement of B→K*(892)γ branching fractions and CP and isospin asymmetries

PATRIGNANI, CLAUDIA;
2009

Abstract

We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×106 BB̄ events collected with the BABAR detector at the PEP-II asymmetric energy B factory. We measure the branching fractions B(B0→K*0γ)=(4. 47±0.10±0.16)×10-5 and B(B+→K*+γ)=(4. 22±0.14±0.16)×10-5. We constrain the direct CP asymmetry to be -0.033
2009
Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Measurement of B→K*(892)γ branching fractions and CP and isospin asymmetries. PHYSICAL REVIEW LETTERS, 103(21), 1-7 [10.1103/PhysRevLett.103.211802].
Aubert, B; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/548035
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