We perform a measurement of the CP asymmetry in b→sγ decays using a sample of 383×106 BB̅ events collected by the BABAR detector at the SLAC PEP-II asymmetric B factory. We reconstruct 16 flavor-specific B decay modes containing a high-energy photon and a hadronic system Xs containing an s quark. We measure the CP asymmetry to be -0.011±0.030(stat)±0.014(syst) for a hadronic system mass between 0.6 and 2.8 GeV/c2.
A Measurement of CP Asymmetry in b ---> s gamma using a Sum of Exclusive Final States
PERUZZI, Ida Marena;BIASINI, Maurizio
2008
Abstract
We perform a measurement of the CP asymmetry in b→sγ decays using a sample of 383×106 BB̅ events collected by the BABAR detector at the SLAC PEP-II asymmetric B factory. We reconstruct 16 flavor-specific B decay modes containing a high-energy photon and a hadronic system Xs containing an s quark. We measure the CP asymmetry to be -0.011±0.030(stat)±0.014(syst) for a hadronic system mass between 0.6 and 2.8 GeV/c2.File in questo prodotto:
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