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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

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