Production of J/psi Mesons in p Be Collisions at 530 and 800 GeV/c

TL;DR

This paper investigates J/psi meson production in proton-Beryllium collisions at 530 and 800 GeV/c, measuring differential distributions and comparing results with other experiments to understand production mechanisms.

Contribution

It provides new measurements of J/psi production in proton-Beryllium collisions at high energies, including differential distributions as functions of xf, pT^2, and decay angles.

Findings

Measured differential distributions as functions of xf, pT^2, and decay angles.

Compared proton-induced J/psi production with pion-induced results.

Provided data consistent with existing models and previous experiments.

Abstract

We report on the production of J/psi mesons in 530 and 800 GeV/c proton - Be collisions in the Feynman-x range 0.0 < xf < 0.6. The J/psi mesons were detected via decays into opposite sign muon pairs. Differential distributions for J/psi production have been measured as functions of xf, pT^2, and cosine of the Gottfried-Jackson decay angle. These distributions are compared with results on J/psi production obtained in 515 GeV/c pion - Be collisions, measured by the same experiment, as well as with results from other experiments using incident protons.