Search for CP violation in B+/- --> J/psiK+/- and B+/- --> psi(2S)K+/- decays.

Bonvicini, G; Cinabro, D; McGee, S; Perera, L P; Zhou, G J; Lipeles, E; Pappas, S; Schmidtler, M; Shapiro, A; Sun, W M; Weinstein, A J; Jaffe, D E; Masek, G; Paar, H P; Potter, E M; Prell, S; Sharma, V; Asner, D M; Eppich, A; Hill, T S; Morrison, R J; Nelson, H N; Briere, R A; Behrens, B H; Ford, W T; Gritsan, A; Roy, J; Smith, J G; Alexander, J P; Baker, R; Bebek, C; Berger, B E; Berkelman, K; Blanc, F; Boisvert, V; Cassel, D G; Dickson, M; Drell, P S; Ecklund, K M; Ehrlich, R; Foland, A D; Gaidarev, P; Gibbons, L; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Hopman, P I; Jones, C D

Bonvicini, G; Cinabro, D; McGee, S; Perera, L P; Zhou, G J; Lipeles, E; Pappas, S; Schmidtler, M; Shapiro, A; Sun, W M; Weinstein, A J; Jaffe, D E; Masek, G; Paar, H P; Potter, E M; Prell, S; Sharma, V; Asner, D M; Eppich, A; Hill, T S; Morrison, R J; Nelson, H N; Briere, R A; Behrens, B H; Ford, W T; Gritsan, A; Roy, J; Smith, J G; Alexander, J P; Baker, R; Bebek, C; Berger, B E; Berkelman, K; Blanc, F; Boisvert, V; Cassel, D G; Dickson, M; Drell, P S; Ecklund, K M; Ehrlich, R; Foland, A D; Gaidarev, P; Gibbons, L; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Hopman, P I; Jones, C D.

Afiliación

Bonvicini G; Wayne State University, Detroit, Michigan 48202, USA.

Phys Rev Lett ; 84(26 Pt 1): 5940-4, 2000 Jun 26.

Article en En | MEDLINE | ID: mdl-10991094

RESUMEN

We present a search for direct CP violation in B+/--->J/psiK+/- and B+/--->psi(2S)K+/- decays. In a sample of 9.7x10(6) B&Bmacr; meson pairs collected with the CLEO detector, we have fully reconstructed 534 B+/--->J/psiK+/- and 120 B+/--->psi(2S)K+/- decays with very low background. We have measured the CP-violating charge asymmetry to be [+1.8+/-4.3(stat)+/-0.4(syst)]% for B+/--->J/psiK+/- and [+2.0+/-9. 1(stat)+/-1.0(syst)]% for B+/--->psi(2S)K+/-.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2000 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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