Evidence for direct CP violation from Dalitz-plot analysis of B±→K±π∓π±

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Aubert, B. et al. (2008) Evidence for direct CP violation from Dalitz-plot analysis of B±→K±π∓π±. Physical Review D, 78 (1). 012004. ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.78.012004

DOI: 10.1103/PhysRevD.78.012004

Abstract

We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K±π∓π±. Using a sample of (383.2±4.2)×106 BB̅ pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B±→ρ0(770)K±, with a CP-violation parameter ACP=(+44±10±4-13+5)%.

Item Type:	Article
Subjects:	Q Science > QC Physics
Schools:	School of Applied Sciences
Depositing User:	Sharon Beastall
Date Deposited:	12 May 2011 12:12
Last Modified:	12 May 2011 12:12
URI:	http://eprints.hud.ac.uk/id/eprint/10402

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