Measurement of the effective B_s^0 -> J/{\psi} K_S^0 lifetime - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Nuclear Physics B Year : 2013

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

R. Aaij
  • Function : Author
J. He
J. Cogan
O. Leroy
J. Serrano

Abstract

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.

Dates and versions

in2p3-00815076 , version 1 (18-04-2013)

Identifiers

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R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Measurement of the effective B_s^0 -> J/{\psi} K_S^0 lifetime. Nuclear Physics B, 2013, 873, pp.275-292. ⟨10.1016/j.nuclphysb.2013.04.021⟩. ⟨in2p3-00815076⟩
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