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Measurement of b hadron lifetimes in exclusive decays containing a J/? in pp¯ collisions at vs=1.96TeV

Abstract: We report on a measurement of b-hadron lifetimes in the fully reconstructed decay modes B+?J/?K+, B0?J/?K?(892)0, B0?J/?K0s, and ?0b?J/??0 using data corresponding to an integrated luminosity of 4.3??fb?1, collected by the CDF II detector at the Fermilab Tevatron. The measured lifetimes are ?(B+)=[1.639±0.009(stat)±0.009(syst)]??ps, ?(B0)=[1.507±0.010(stat)±0.008(syst)]??ps, and ?(?0b)=[1.537±0.045(stat)±0.014(syst)]??ps. The lifetime ratios are ?(B+)/?(B0)=[1.088±0.009(stat)±0.004(syst)] and ?(?0b)/?(B0)=[1.020±0.030(stat)±0.008(syst)]. These are the most precise determinations of these quantities from a single experiment.

 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 Letters, 2011, 106(12), 121804

 Editorial: American Physical Society

 Fecha de publicación: 01/03/2011

 Nº de páginas: 8

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.106.121804

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.106.121804

Autoría

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON