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

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.


Published in:
Nuclear Physics B, 873, 2, 275-292
Year:
2013
Publisher:
Amsterdam, Elsevier Science Bv
ISSN:
0550-3213
Laboratories:




 Record created 2013-10-01, last modified 2018-01-28


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