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...

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書目詳細資料
Main Authors: 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
格式: Journal article
出版: 2010
實物特徵
總結: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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