Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb(-1), the Xi(-)(b) and Omega(-)(b) baryons are reconstructed in the Xi(-)(b) -> J/psi Xi(-) and Omega(-)(b) -> J/psi Omega(-) decay modes and their lifetimes measured to be tau(Xi(-)(b)) = 1.55(-0.09)(+0.10) (stat) +/- 0.03 (syst) ps, tau(Omega(-)(b)) = 1.54(-0.21)(+0.26) (stat) +/- 0.05 (syst) ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions. (C) 2014 The Authors. Published by Elsevier B.V.
Titolo: | Measurement of the Xi(-)(b) and Omega(-)(b) baryon lifetimes | |
Autori: | ||
Data di pubblicazione: | 2014 | |
Rivista: | ||
Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.physletb.2014.06.064 | |
Handle: | http://hdl.handle.net/11384/59621 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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