This paper reports the first measurement of the effective B0s → J/ψ K0s 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: τ_{J/ψ K0s}^{eff} = 1.75 ± 0.12 (stat) ± 0.07 (syst) ps and B(B0s → J/ψ K0s) = (1.97 ± 0.23) x 10^−5. For the latter measurement, the uncertainty includes both statistical and systematic sources.

R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2013). Measurement of the Effective B0s → J/ψ K0s Lifetime. NUCLEAR PHYSICS. B, 873(2), 275-292 [10.1016/j.nuclphysb.2013.04.021].

Measurement of the Effective B0s → J/ψ K0s Lifetime

CARBONE, ANGELO;GALLI, DOMENICO;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2013

Abstract

This paper reports the first measurement of the effective B0s → J/ψ K0s 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: τ_{J/ψ K0s}^{eff} = 1.75 ± 0.12 (stat) ± 0.07 (syst) ps and B(B0s → J/ψ K0s) = (1.97 ± 0.23) x 10^−5. For the latter measurement, the uncertainty includes both statistical and systematic sources.
2013
R. Aaij, C. Abellan Beteta, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, et al. (2013). Measurement of the Effective B0s → J/ψ K0s Lifetime. NUCLEAR PHYSICS. B, 873(2), 275-292 [10.1016/j.nuclphysb.2013.04.021].
R. Aaij; C. Abellan Beteta; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/138395
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