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. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2013). Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime. NUCLEAR PHYSICS. B, 873(2), 275-292 [10.1016/j.nuclphysb.2013.04.021].

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

CALVI, MARTA;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;PESSINA, GIANLUIGI EZIO;
2013

Abstract

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. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Articolo in rivista - Articolo scientifico
Heavy Flavour Physics, LHC Collider
English
2013
873
2
275
292
none
Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2013). Measurement of the effective B-S(0) -> J/psi K-S(0) lifetime. NUCLEAR PHYSICS. B, 873(2), 275-292 [10.1016/j.nuclphysb.2013.04.021].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/65035
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