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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. ISSN 1550-7998

Full text not available from this repository.

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

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