Measurement Of The Cp Asymmetry And Branching Fraction Of B-0 ->Rho K-0(0)
B. Aubert,R. Barate,M. Bona, D. Boutigny, F. Couderc,Y. Karyotakis,J. Lees,V. Poireau,V. Tisserand,A. Zghiche,E. Grauges,A. Palano, J. Chen,N. Qi,G. Rong, P. Wang,Y. Zhu,G. Eigen,I. Ofte, B. Stugu,G. Abrams,M. Battaglia,D. Brown,J. Button-Shafer,R. Cahn, E. Charles,M. Gill,Y. Groysman, R. Jacobsen,J. Kadyk,L. Kerth,Yu. Kolomensky, G. Kukartsev, G. Lynch,L. Mir,T. Orimoto,M. Pripstein,N. Roe,M. Ronan,W. Wenzel,P. del Amo Sanchez,M. Barrett, K. Ford,T. Harrison,A. Hart,C. Hawkes,S. Morgan,A. Watson,T. Held, H. Koch,B. Lewandowski,M. Pelizaeus,K. Peters,T. Schroeder, M. Steinke,J. Boyd,J. Burke,W. Cottingham, D. Walker,T. Cuhadar-Donszelmann,B. Fulsom, C. Hearty,N. Knecht, T. Mattison,J. McKenna, A. Khan, P. Kyberd,M. Saleem,D. Sherwood,L. Teodorescu,V. Blinov,A. Bukin, V. Druzhinin,V. Golubev,A. Onuchin,S. Serednyakov,Yu. Skovpen,E. Solodov,K. Todyshev,D. Best,M. Bondioli,M. Bruinsma,M. Chao,S. Curry, I. Eschrich,D. Kirkby,A. Lankford,P. Lund,M. Mandelkern, R. Mommsen,W. Roethel,D. 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PHYSICAL REVIEW LETTERS（2007）
引用 11|浏览341
摘要
We present a measurement of the branching fraction and time-dependent CP asymmetry of B-0 -> POKO. The results are obtained from a data sample of 227 x 10(6) Y(4S) -> BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at Stanford Linear Accelerator Center. From a time-dependent maximum likelihood fit yielding 111 +/- 19 signal events, we find B(B-0 -> rho K-0(0)) = (4.9 +/- 0.8 +/- 0.9) x 10(-6), where the first error is statistical and the second systematic. We report the measurement of the CP parameters S-rho 0KS0 = 0.20 +/- 0.52 +/- 0.24 and C-rho 0KS0 = 0.64 +/- 0.41 +/- 0.20.
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关键词
elementary particles,maximum likelihood
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