Identifying hadronic charmonium decays in hadron colliders

Abstract

Identification of charmonium states at hadron colliders has mostly been limited to leptonic decays of the J/\psiJ/ψ. In this paper we present an algorithm to identify hadronic decays of charmonium states (J/\psiJ/ψ, \psiψ(2S), \chi_{c0,c1,c2}χc0,c1,c2) which make up the large majority of all decays. The algorithm is able to identify hadronic J/\psiJ/ψ decays with an efficiency of 36% while suppressing a background of quark and gluon jets by a factor 100.