Measurement of the ${\Omega }_b^{-}$ baryon lifetime

LHCb collaboration, R. Aaij, M. Abdelfatah +1160

The lifetime ratio $r_{\tau }\equiv {\tau }_{{\Omega }_b^{-}}/{\tau }_{{\Xi }_b^{-}}$ between the ${\Omega }_b^{-}$ and ${\Xi }_b^{-}$ baryons is measured using a sample of $pp$ collision data corresponding to an integrated lum…