Observation of a new ${\Xi }_b^{-}$ resonance

R. Aaij, B. Adeva, M. Adinolfi +806

From samples of $pp$ collision data collected by the LHCb experiment at $\sqrt{s}=7$, $8$ and $13$ TeV corresponding to integrated luminosities of 1.0, 2.0 and 1.5 fb${}^{-1}$, respe…