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Measurement of branching fractions in radiative B decays to eta K gamma and search for B decays to eta K-'gamma

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BABAR Collaboration (Including:

Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A. et al.
). (2006) Measurement of branching fractions in radiative B decays to eta K gamma and search for B decays to eta K-'gamma. PHYSICAL REVIEW D, 74 (3). -. ISSN 1550-7998

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Abstract

We present measurements of the B ->eta K gamma branching fractions and upper limits for the B ->eta K-'gamma branching fractions. For B+->eta K+gamma we also measure the time-integrated charge asymmetry. The data sample, collected with the BABAR detector at the Stanford Linear Accelerator Center, represents 232x10(6) produced B (B) over bar pairs. The results for branching fractions and upper limits at 90% confidence level in units of 10(-6) are: B(B-0 ->eta K-0 gamma)=11.3(-2.6)(+2.8)+/- 0.6, B(B+->eta K+gamma)=10.0 +/- 1.3 +/- 0.5, B(B-0 ->eta K-'(0)gamma)< 6.6, B(B+->eta K-'(+)gamma)< 4.2. The charge asymmetry in the decay B+->eta K+gamma is A(ch)=-0.09 +/- 0.12 +/- 0.01. The first errors are statistical and the second systematic.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Journal or Publication Title: PHYSICAL REVIEW D
Publisher: AMERICAN PHYSICAL SOC
ISSN: 1550-7998
Date: August 2006
Volume: 74
Number: 3
Number of Pages: 8
Page Range: -
Identification Number: 10.1103/PhysRevD.74.031102
Publication Status: Published
URI: http://wrap.warwick.ac.uk/id/eprint/33085

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