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Measurement of branching ratio and Bs0 lifetime in the decay Bs0?J/?f0(980) at CDF

Abstract: We present a study of B0s decays to the CP-odd final state J/?f0(980) with J/???+?? and f0(980)??+??. Using p¯p collision data with an integrated luminosity of 3.8fb?1 collected by the CDF II detector at the Tevatron we measure a B0s lifetime of ?(B0s?J/?f0(980))=1.70+0.12?0.11(stat)±0.03(syst)ps. This is the first measurement of the B0s lifetime in a decay to a CP eigenstate and corresponds in the standard model to the lifetime of the heavy B0s eigenstate. We also measure the product of branching fractions of B0s?J/?f0(980) and f0(980)??+?? relative to the product of branching fractions of B0s?J/?? and ??K+K? to be Rf0/?=0.257±0.020(stat)±0.014(syst), which is the most precise determination of this quantity to date.

Other publications of the same journal or congress with authors from the University of Cantabria

 Authorship: Aaltonen T., Álvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bauer G., Bedeschi F., Beecher D., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Binkley M.,

 Fuente: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 84(5), 052012

Publisher: American Physical Society

 Publication date: 01/09/2011

No. of pages: 14

Publication type: Artículo de Revista

 DOI: 10.1103/PhysRevD.84.052012

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Publication Url: https://doi.org/10.1103/PhysRevD.84.052012

Authorship

AALTONEN. T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON