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Observation of a New Excited Beauty Strange Baryon Decaying to Ξ− b π + π −
(American Physical Society, 2021)
The Ξb-π+π- invariant mass spectrum is investigated with an event sample of proton-proton collisions at s=13 TeV, collected by the CMS experiment at the LHC in 2016-2018 and corresponding to an integrated luminosity of 140 ...