Charmonium production in $\bar p$-induced reactions on nuclei

TL;DR

This paper investigates charmonium production in antiproton-nucleus reactions at 3-10 GeV/c using the Glauber model, focusing on transparency ratios and polarization effects to understand charmonium-nucleon interactions.

Contribution

It introduces a method to extract the charmonium-nucleon cross section from target mass dependence of transparency ratios in antiproton-induced reactions.

Findings

Charmonium-nucleon cross section can be determined from transparency ratios.

Polarization effects influence $oldsymbol{ ext{chi}}_{c2}$ production.

The model successfully describes charmonium production in the studied energy range.

Abstract

The production of charmonia in the antiproton-nucleus reactions at $p_{\rm lab}=3-10$ GeV/c is studied within the Glauber model and the generalized eikonal approximation. The main reaction channel is charmonium formation in an antiproton-proton collision. The target mass dependence of the charmonium transparency ratio allows to determine the charmonium-nucleon cross section. The polarization effects in the production of $\chi_{c2}$ states are evaluated.