Measurement of Branching Fractions and CP and Isospin Asymmetries in B ->K* gamma
Measurement of Branching Fractions and CP and Isospin Asymmetries in B ->K* gamma
复制标题
B ->K* gamma 中的支化分数以及 CP 和同位旋不对称性的测量
DOI:
--
复制
发表时间:
2008
期刊:
影响因子:
--
通讯作者:
E. al.
中科院分区:
文献类型:
--
作者:
T. Aubert;E. al.
We present a preliminary analysis of the decays B0 ->K*0 gamma and B+ ->K*+ gamma using a sample of 383 x 10^6 BBbar events collected with the BABAR dector at the PEP-II asymmetric energy B factory. We measure the branching fractions BF(B0 ->K*0 Gamma) = (4.58 +/- 0.11 +/- 0.16) x 10^-5 and BF(B+ ->K*+ Gamma) = 4.73 +/- 0.15 +/- 0.17 x 10^-5. We measure the direct CP asymmetry to be -0.043<A(B ->K* gamma)<0.025 and the isospin asymmetry to be -0.021<Delta0-<0.079, where the limits are determined at the 90% confidence interval and include both the statistical and systematic uncertainties.