Branching fractions and CP-violating asymmetries in radiative B decays to ηKγ

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Aubert, B. et al. (2009) Branching fractions and CP-violating asymmetries in radiative B decays to ηKγ. Physical Review D, 79 (1). 011102. ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.79.011102

DOI: 10.1103/PhysRevD.79.011102

Abstract

We present measurements of the CP-violation parameters S and C for the radiative decay B0→ηKS0γ; for B→ηKγ we also measure the branching fractions and for B+→ηK+γ the time-integrated charge asymmetry Ach. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465×106 BB̅ pairs produced in e+e- annihilation. The results are S=-0.18-0.46+0.49±0.12, C=-0.32-0.39+0.40±0.07, B(B0→ηK0γ)=(7.1-2.0+2.1±0.4)×10-6, B(B+→ηK+γ)=(7.7±1.0±0.4)×10-6, and Ach=(-9.0-9.8+10.4±1.4)×10-2. The first error quoted is statistical and the second systematic.

Item Type:	Article
Subjects:	Q Science > QC Physics
Schools:	School of Applied Sciences
Depositing User:	Sharon Beastall
Date Deposited:	12 May 2011 13:15
Last Modified:	12 May 2011 13:15
URI:	http://eprints.hud.ac.uk/id/eprint/10410

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