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arXiv · 0805.4796

A Measurement of CP Asymmetry in b->sgamma using a Sum of Exclusive Final States

BABAR Collaboration·B. Aubert
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Abstract

We perform a measurement of the CP asymmetry in b->sgamma decays using a sample of 383 BB events collected by the BABAR detector at the PEP-II asymmetric B factory. We reconstruct sixteen 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 photon energy threshold at 1.6 GeV and the hadronic system mass between 0.6 and 2.8 GeV/c2.

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BABAR Collaboration, B. Aubert. 2008-12-07. A Measurement of CP Asymmetry in b->sgamma using a Sum of Exclusive Final States. https://doi.org/10.1103/physrevlett.101.171804

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