Charmonium production at neutrino factories

TL;DR

This paper explores charmonium production in neutrino-nucleon interactions at neutrino factories, highlighting the dominance of color octet mechanisms and the potential for future experiments to measure these effects precisely.

Contribution

It identifies the dominant role of the color octet $^3S_1$ NRQCD matrix element in neutrino-induced $J/A$ production, a process not accessible in other experimental setups.

Findings

Neutrino-nucleon collisions are dominated by color octet mechanisms.

Future neutrino experiments can measure color octet matrix elements accurately.

Current experiments like NOMAD and NuTeV could observe relevant events.

Abstract

At existing and planned neutrino factories (high energy and high intensity neutrino beam facilities) precision studies of QCD in neutrino-nucleon interactions are a realistic opportunity. We investigate charmonium production in fixed target neutrino experiments. We find that $J/\psi$ production in neutrino-nucleon collision is dominated by the color octet $^3S_1$ NRQCD matrix element in a neutral current process, which is not accessible in photo or leptoproduction. Neutrino experiments at a future Muon Collider will acquire sufficient event rate to accurately measure color octet matrix element contributions. The currently running high energy neutrino experiments, NOMAD and NuTeV could also observe several such events.