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Measurement of B decays to phi K gamma

Conference ·
OSTI ID:887469

We measure the branching fraction of the radiative B{sup -} decay {Beta}(B{sup -} {yields} {phi}K{sup -}{gamma}) = (3.46 {+-} 0.57{sub -0.37}{sup +0.39}) x 10{sup -6}, and set an upper limit on the radiative {bar B}{sup 0} decay {Beta}({bar B}{sup 0} {yields} {phi}{bar K}{sup 0}{gamma}) < 2.71 x 10{sup -6} at 90% confidence level. We also measure the direct CP asymmetry of the B{sup -} {yields} {phi}K{sup -}{gamma} mode {Alpha}{sub CP} = (-26.4 {+-} 14.3 {+-} 4.8)%. The uncertainties are statistical and systematic, respectively. These measurements are based on 207 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector.

Research Organization:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515
OSTI ID:
887469
Report Number(s):
SLAC-PUB-11967; hep-ex/0607037
Country of Publication:
United States
Language:
English

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