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Measurement of the Effective B[superscript 0][subscript s]→J/ΨK[superscript 0][subscript S] Lifetime

Author(s)
Williams, Michael
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Abstract
This paper reports the first measurement of the effective B[superscript 0][subscript s] →J/ψK[superscript 0][subscript S] 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[superscript -1] of pp collisions, recorded by the LHCb experiment in 2011 at a centre-of-mass energy of 7 TeV. The results are: τ[superscript eff] [subscript J/ψK[superscript 0][subscript S]] = 1.75±0.12 (stat)±0.07 (syst) ps and B(B[superscript 0][subscript S] →J/ψK[superscript 0][subscript S]) = (1.97 ± 0.23) × 10[superscript -5]. For the latter measurement, the uncertainty includes both statistical and systematic sources. © 2013 CERN. Published by Elsevier B.V.
Date issued
2013-04
URI
http://hdl.handle.net/1721.1/116413
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Nuclear Physics B
Publisher
Elsevier BV
Citation
Aaij, R., et al. “Measurement of the Effective B[superscript 0][subscript s]→J/ΨK[superscript 0][subscript S] Lifetime.” Nuclear Physics B, vol. 873, no. 2, Aug. 2013, pp. 275–92. © CERN for the benefit of the LHCb Collaboration
Version: Final published version
ISSN
0550-3213

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