We study B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays in a sample of about 89x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244+/-20 B+/--->J/psipi(+/-) events and determine the ratio B(B+/--->J/psipi(+/-))/B(B+/--->J/psiK(+/-)) to be [5.37+/-0.45(stat)+/-0.11(syst)]%. The charge asymmetries for the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays are determined to be A(pi)=0.123+/-0.085(stat)+/-0.004(syst) and A(K)=0.030+/-0.015(stat)+/-0.006(syst), respectively.

Study of B-+/--> J/psi pi(+/-) and B-+/--> J/psi K +/- decays: Measurement of the ratio of branching fractions and search for direct CP violation / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 92:(2004), pp. 241802-1-241802-7. [10.1103/PhysRevLett.92.241802]

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

DEL RE, Daniele;RAHATLOU, SHAHRAM;SARTI, ALESSIO;BELLINI, Fabio;CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;GASPERO, Mario;VOENA C;
2004

Abstract

We study B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays in a sample of about 89x10(6) B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244+/-20 B+/--->J/psipi(+/-) events and determine the ratio B(B+/--->J/psipi(+/-))/B(B+/--->J/psiK(+/-)) to be [5.37+/-0.45(stat)+/-0.11(syst)]%. The charge asymmetries for the B+/--->J/psipi(+/-) and B+/--->J/psiK(+/-) decays are determined to be A(pi)=0.123+/-0.085(stat)+/-0.004(syst) and A(K)=0.030+/-0.015(stat)+/-0.006(syst), respectively.
2004
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 violation / Aubert, B., Barate, R., Boutigny, D., Couderc, F., Gaillard, J.m., Hicheur, A., Karyotakis, Y., Lees, J.p., Tisserand, V., Zghiche, A., Palano, A., Pompili, A., Chen, J.c., Qi, N.d., Rong, G., Wang, P., Zhu, Y.s., Eigen, G., Ofte, I., Stugu, B., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 92:(2004), pp. 241802-1-241802-7. [10.1103/PhysRevLett.92.241802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/231899
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