Measurement of B decays to ϕ K γ

We search for the decays B − → ϕ K − γ and ¯¯¯ B 0 → ϕ ¯¯¯¯ K 0 γ in a data sample of 228 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector. We measure the branching fraction B ( B − → ϕ K − γ ) = ( 3.5 ± 0.6 ± 0.4 ) × 10 − 6 and set an upper limit B ( ¯¯¯ B 0 → ϕ ¯¯¯...

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Veröffentlicht in:	Physical review. D 2007-03, Vol.75 (5), Article 051102
Hauptverfasser:	Aubert, B., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., Ofte, I., Stugu, B., Abrams, G. S., Battaglia, M., Brown, D. N., Button-Shafer, J., Cahn, R. N., Charles, E., Gill, M. S., Groysman, Y., Jacobsen, R. G., Kadyk, J. A., Kerth, L. T., Kolomensky, Yu. G., Kukartsev, G., Pegna, D. Lopes, Lynch, G., Mir, L. M., Orimoto, T. J., Pripstein, M., Roe, N. A., Ronan, M. T., Wenzel, W. A., Sanchez, P. del Amo, Barrett, M., Ford, K. E., Harrison, T. J., Hart, A. J., Hawkes, C. M., Watson, A. T., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Peters, K., Schroeder, T., Steinke, M., Boyd, J. T., Burke, J. P., Cottingham, W. N., Walker, D., Asgeirsson, D. J., Cuhadar-Donszelmann, T., Fulsom, B. G., Hearty, C., Knecht, N. S., Mattison, T. S., McKenna, J. A., Khan, A., Kyberd, P., Saleem, M., Sherwood, D. J., Teodorescu, L., Blinov, V. E., Bukin, A. D., Druzhinin, V. P., Golubev, V. B., Onuchin, A. P., Serednyakov, S. I., Skovpen, Yu. I., Solodov, E. P., Todyshev, K. Yu, Best, D. S., Bondioli, M., Bruinsma, M., Chao, M., Curry, S., Eschrich, I., Kirkby, D., Lankford, A. J., Lund, P., Mandelkern, M., Roethel, W., Stoker, D. P., Abachi, S., Buchanan, C., Foulkes, S. D., Gary, J. W., Long, O., Shen, B. C., Wang, K., Zhang, L., Hadavand, H. K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Experiments Física de partícules High Energy Physics - Experiment Particle physics Physics
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Beschreibung
Zusammenfassung:	We search for the decays B − → ϕ K − γ and ¯¯¯ B 0 → ϕ ¯¯¯¯ K 0 γ in a data sample of 228 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector. We measure the branching fraction B ( B − → ϕ K − γ ) = ( 3.5 ± 0.6 ± 0.4 ) × 10 − 6 and set an upper limit B ( ¯¯¯ B 0 → ϕ ¯¯¯¯ K 0 γ ) < 2.7 × 10 − 6 at the 90% confidence level. We also measure the direct C P asymmetry in B − → ϕ K − γ , A C P = ( − 26 ± 14 ± 5 ) % . The uncertainties are statistical and systematic, respectively.
ISSN:	1550-7998 2470-0010 1550-2368 2470-0029
DOI:	10.1103/PhysRevD.75.051102