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2013

Measurement of the effective B_s^0 -> J/{\psi} K_S^0 lifetime

LHCb collaboration, Aaij, R., Beteta, C. Abellan et al.

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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_J/{\psi}K_S^0 = 1.75 +/- 0.12 (stat) +/- 0.07 (syst) and BR(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.

Measurement of the effective B_s^0 -> J/{\psi} K_S^0 lifetime · Around

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LHCb collaboration, R. Aaij et al

2013

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