Measurement of the effective B → J/ψK lifetime

Measurement of the effective B → J/ψK lifetime

This paper reports the first measurement of the effective B →J/ψK 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 of pp collisions, recorded by the LHCb experiment...

Täydet tiedot

Bibliografiset tiedot
Päätekijät: Bediaga, I, De Miranda, J, Ferreira Rodrigues, F, Massafferri, A, Nasteva, I, dos Reis, A, Amato, S, Carvalho Akiba, K, De Paula, L, Francisco, O, Gandelman, M, Gomes, A, Lopes, J, Martins Tostes, D, Otalora Goicochea, J, Polycarpo, E, Rangel, MS, Salustino Guimaraes, V, Souza De Paula, B, Vieira, D, Chen, P, Gao, Y, Jing, F, Li, Y, Liu, B
Aineistotyyppi: Journal article
Julkaistu: 2010
Kuvaus
Yhteenveto:This paper reports the first measurement of the effective B →J/ψK 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 of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: τ = 1.75±0.12 (stat)±0.07 (syst) ps and B(B →J/ψK ) = (1.97 ± 0.23) × 10. For the latter measurement, the uncertainty includes both statistical and systematic sources. © 2013 CERN. Published by Elsevier B.V.

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