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Branching fractions and CP-violating asymmetries in radiative B decays to eta K gamma

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BABAR Collaboration (Including:

Aubert, B., Bona, M., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E. et al.
). (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. doi:10.1103/PhysRevD.79.011102 ISSN 1550-7998.

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

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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, Engineering and Medicine > Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: January 2009
Dates:
DateEvent
January 2009Published
Volume: Vol.79
Number: No.1
Number of Pages: 7
Page Range: article no. 011102
DOI: 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

Data sourced from Thomson Reuters' Web of Knowledge

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