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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.

 Autoría: 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

 Editorial: American Physical Society

 Fecha de publicación: 01/09/2011

 Nº de páginas: 14

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.84.052012

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

 Url de la publicación: https://doi.org/10.1103/PhysRevD.84.052012

Autoría

AALTONEN. T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON