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Measurement of the CP Asymmetry in b -> s gamma Using a Sum of Exclusive Final States
Journal article   Peer reviewed

Measurement of the CP Asymmetry in b -> s gamma Using a Sum of Exclusive Final States

B. Aubert, M. Bona, Y. Karyotakis, J. P. Lees, V. Poireau, X. Prudent, V. Tisserand, A. Zghiche, J. Garra Tico, E. Grauges, …
Physical review letters, Vol.101(17)
24/10/2008
PMID: 18999741

Abstract

Physical Sciences Physics Physics, Multidisciplinary Science & Technology
We perform a measurement of the CP asymmetry in b -> s gamma decays using a sample of 383 x 10(6) B (B) over bar 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 X-s 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/c(2).

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