Identifying hadronic charmonium decays in hadron colliders

TL;DR

This paper introduces an algorithm to identify hadronic decays of charmonium states at hadron colliders, significantly improving detection efficiency and background suppression compared to previous leptonic decay-based methods.

Contribution

The paper presents a novel algorithm for identifying hadronic charmonium decays, expanding detection capabilities beyond leptonic channels at hadron colliders.

Findings

Achieves 36% efficiency in identifying hadronic J/ψ decays.

Suppresses quark and gluon jet background by a factor of 100.

Enables detection of a larger fraction of charmonium decays.

Abstract

Identification of charmonium states at hadron colliders has mostly been limited to leptonic decays of the J/{\psi}. In this paper we present and algorithm to identify hadronic decays of charmonium states (J/{\psi}, {\psi}(2S), \chi_{c0,1,2}) which make up the large majority of all decays. The algorithm is able to identify hadronic $J/\psi$ decays with an efficiency of 36\% while suppressing a background of quark and gluon jets by a factor 100.