We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×10^6 BB̅ 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.
Measurement of B→K*(892)γ Branching Fractions and CP and Isospin Asymmetries
GAZ A;SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2009
Abstract
We present an analysis of the decays B0→K*0(892)γ and B+→K*+(892)γ using a sample of about 383×10^6 BB̅ 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 -0.033File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
