Observation of a new ${\Xi }_b^0$ state

LHCb collaboration, R. Aaij, C. Abellán Beteta +957

Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 8.5 fb${}^{-1}$, the observation of a new excited ${\Xi }_b^0$ r…