BABAR Collaboration (Including:

). (2009) Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.79 (No.1). article no. 011102. ISSN 1550-7998

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Abstract

We present measurements of the CP-violation parameters S and C for the radiative decay B-0 --> eta K-S(0)gamma; for B --> eta K gamma we also measure the branching fractions and for B+ --> K+gamma the time-integrated charge asymmetry A(ch). The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 465 x 10(6) B (B) over bar 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(B-0 --> eta K-0 gamma) = (7.1(-2.0)(+2.1) +/- 0.4) x 10(-6), B(B+ --> eta K+gamma) = (7.7 +/- 1.0 +/- 0.4) x 10(-6), and A(ch) = (-9.0(-9.8)(+10.4)) x 10(-2). The first error quoted is statistical and the second systematic.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher:	American Physical Society
ISSN:	1550-7998
Date:	January 2009
Volume:	Vol.79
Number:	No.1
Number of Pages:	7
Page Range:	article no. 011102
Identification Number:	10.1103/PhysRevD.79.011102
Status:	Peer Reviewed
Publication Status:	Published
Funder:	DOE (USA), NSF (USA), NSERC (Canada), CEA (France), CNRS-IN<INF>2</INF>P<INF>3</INF> (France), BMBF (Germany), DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A.P. Sloan Foundation
URI:	http://wrap.warwick.ac.uk/id/eprint/28565

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