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Measurement of the B s 0 → J / ψ η lifetime
- Collaboration, The LHCb;
- Aaij, R;
- Adeva, B;
- Adinolfi, M;
- Ajaltouni, Z;
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Published Web Location
http://doi.org/10.1016/j.physletb.2016.10.006No data is associated with this publication.
Abstract
Using a data set corresponding to an integrated luminosity of 3 fb − 1 , collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the B s 0 → J / ψ η decay mode, τ eff , is measured to be τ eff = 1.479 ± 0.034 (stat) ± 0.011 (syst) ps . Assuming CP conservation, τ eff corresponds to the lifetime of the light B s 0 mass eigenstate. This is the first measurement of the effective lifetime in this decay mode.
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