We have studied the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays using a 20.7 fb(-1) data set collected with the BABAR detector. We observe a signal of 51+/-10 B+/--->J/psipi(+/-) events and determine the ratio B(B+/--->J/psipi(+/-))/B(B+/--->J/psiK(+/-)) to be [3.91+/-0.78(stat)+/-0.19(syst)]%. The CP-violating charge asymmetries for the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays are determined to be A(pi)=0.01+/-0.22(stat)+/-0.01(syst) and A(K)=0.003+/-0.030(stat)+/-0.004(syst).

Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K-+/- decays: Measurement of the ratio of branching fractions and search for direct CP-violating charge asymmetries / B., A., D., B., J. M., G., A., H., Y., K., J. P., L., P., R., V., T., A., P., A., P., G. P., C., J. C., C., N. D., Q.i., G., R., P., W., Y. S., Z., G., E., B., S., G. S., A., A. W., B., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 65:(2002), p. 091101. [10.1103/physrevd.65.091101]

Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K-+/- decays: Measurement of the ratio of branching fractions and search for direct CP-violating charge asymmetries

RAHATLOU, SHAHRAM;CAVOTO, Gianluca;DEL RE, Daniele;FACCINI, Riccardo;FERRONI, Fernando;C. Voena;
2002

Abstract

We have studied the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays using a 20.7 fb(-1) data set collected with the BABAR detector. We observe a signal of 51+/-10 B+/--->J/psipi(+/-) events and determine the ratio B(B+/--->J/psipi(+/-))/B(B+/--->J/psiK(+/-)) to be [3.91+/-0.78(stat)+/-0.19(syst)]%. The CP-violating charge asymmetries for the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays are determined to be A(pi)=0.01+/-0.22(stat)+/-0.01(syst) and A(K)=0.003+/-0.030(stat)+/-0.004(syst).
2002
01 Pubblicazione su rivista::01a Articolo in rivista
Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K-+/- decays: Measurement of the ratio of branching fractions and search for direct CP-violating charge asymmetries / B., A., D., B., J. M., G., A., H., Y., K., J. P., L., P., R., V., T., A., P., A., P., G. P., C., J. C., C., N. D., Q.i., G., R., P., W., Y. S., Z., G., E., B., S., G. S., A., A. W., B., et al.. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - 65:(2002), p. 091101. [10.1103/physrevd.65.091101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/458143
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