Measurement of B decays to {phi}K{gamma}

Journal Article · Wed Feb 28 23:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.051102· OSTI ID:21020036

Aubert, B; Bona, M; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I; Stugu, B ^[5]; Abrams, G S ^[6]

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1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
2. Facultat de Fisica, Departament ECM, Universitat de Barcelona, E-08028 Barcelona (Spain)
3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
6. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States) and University of California at Berkeley, Berkeley, California 94720 (United States)

We search for the decays B{sup -}{yields}{phi}K{sup -}{gamma} and B{sup 0}{yields}{phi}K{sup 0}{gamma} in a data sample of 228x10{sup 6} BB pairs collected at the {upsilon}(4S) resonance with the BABAR detector. We measure the branching fraction B(B{sup -}{yields}{phi}K{sup -}{gamma})=(3.5{+-}0.6{+-}0.4)x10{sup -6} and set an upper limit B(B{sup 0}{yields}{phi}K{sup 0}{gamma})<2.7x10{sup -6} at the 90% confidence level. We also measure the direct CP asymmetry in B{sup -}{yields}{phi}K{sup -}{gamma}, A{sub CP}=(-26{+-}14{+-}5)%. The uncertainties are statistical and systematic, respectively.

• OSTI ID: 21020036
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MINUS MESONS
B NEUTRAL MESONS
BRANCHING RATIO
CP INVARIANCE
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
KAONS MINUS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PHI-1020 MESONS
PHOTONS
RESONANCE PARTICLES
UPSILON-10580 MESONS