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Measurement of the B0s→J/ψη lifetime

Abstract : Using a data set corresponding to an integrated luminosity of 3fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the B0s→J/ψη decay mode, τeff, is measured to be τeff=1.479±0.034 (stat)±0.011 (syst) ps. Assuming CP conservation, τeff corresponds to the lifetime of the light B0s mass eigenstate. This is the first measurement of the effective lifetime in this decay mode.
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Contributor : Claudine Bombar <>
Submitted on : Friday, July 22, 2016 - 9:32:56 AM
Last modification on : Tuesday, April 20, 2021 - 12:00:16 PM

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R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Measurement of the B0s→J/ψη lifetime. Physics Letters B, Elsevier, 2016, 762, pp.484-492. ⟨10.1016/j.physletb.2016.10.006⟩. ⟨in2p3-01347965⟩



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