Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime
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Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime

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Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime

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LHCb Collaboration; Oyanguren Campos, Arantza Perfil; Ruiz Valls, Pablo
Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : http://dx.doi.org/10.1016/j.nuclphysb.2013.04.021
This paper reports the first measurement of the effective B-S(0) -> J/psi K-S(0) lifetime and an updated measurement of its time-integrated branching fraction. Both measurements are performed with a data sample, corresponding to an integrated luminosity of 1.0 fb(-1) of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: tau(eff)(J/psi KS0) = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) ps and B(B-S(0) -> J/psi K-S(0)) = (1.97 +/- 0.23) x 10(-5). For the latter measurement, the uncertainty includes both statistical and systematic sources.

    LHCb Collaboration Oyanguren Campos, Arantza Ruiz Valls, Pablo 2013 Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime Nuclear Physics B 873 2 275 292
http://dx.doi.org/10.1016/j.nuclphysb.2013.04.021
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