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

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 79, 011102(R) – Published 15 January 2009

Abstract

We present measurements of the CP-violation parameters S and C for the radiative decay B0ηKS0γ; for BηKγ 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 BB¯ pairs produced in e+e annihilation. The results are S=0.180.46+0.49±0.12, C=0.320.39+0.40±0.07, B(B0ηK0γ)=(7.12.0+2.1±0.4)×106, B(B+ηK+γ)=(7.7±1.0±0.4)×106, and Ach=(9.09.8+10.4±1.4)×102. The first error quoted is statistical and the second systematic.

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  • Received 12 May 2008

DOI:https://doi.org/10.1103/PhysRevD.79.011102

©2009 American Physical Society

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Vol. 79, Iss. 1 — 1 January 2009

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