Measurement of B Decays to phi K gamma
High Energy Physics - Experiment
2007-05-23 v1
Abstract
We measure the branching fraction of the radiative B- decay B(B- -> phi K- gamma) = (3.46 +/- 0.57^{+0.39}_{-0.37}) 10^-6, and set an upper limit on the radiative B0 decay B(B0 -> phi K0 gamma) < 2.71 10^-6 at 90% confidence level. We also measure the direct CP asymmetry of the B- -> phi K- gamma mode A_CP = (-26.4 +/- 14.3 +/- 4.8)%. The uncertainties are statistical and systematic, respectively. These measurements are based on 207 1/fb of data collected at the Y4S resonance with the BABAR detector.
Cite
@article{arxiv.hep-ex/0607037,
title = {Measurement of B Decays to phi K gamma},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:hep-ex/0607037},
year = {2007}
}
Comments
15 pages, 7 postscript figures, submitted to ICHEP2006