Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb-1, the Ξ-b and Ω-b baryons are reconstructed in the Ξ-b→J/ψΞ- and Ω-b→J/ψΩ- decay modes and their lifetimes measured to be τ(Ξ-b)=1.55+0.10-0.09(stat)±0.03(syst)ps, τ(Ω-b)=1.54+0.26-0.21(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.
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Early online date||26 Jun 2014|
|Publication status||Published - 7 Sep 2014|
ASJC Scopus subject areas
- Nuclear and High Energy Physics