A new explanation to the cold nuclear matter effects in heavy ion collisions

TL;DR

This paper introduces a new approach to explain cold nuclear matter effects in heavy ion collisions, providing more accurate predictions of J/Psi production ratios by redefining nuclear effects with clear physical origins.

Contribution

It redefines cold nuclear matter effects with clear physical bases, improving the accuracy of J/Psi ratio predictions in p-A collisions over traditional methods.

Findings

New definitions reproduce experimental data more accurately.

Redefinitions clarify physical origins of nuclear effects.

Enhanced modeling of quarkonium production in nuclear environments.

Abstract

The J/Psi cross section ratios of p-A/p-p under different collision energy is calculated with cold nuclear matter effects redefined in this paper. The advantage of these new definitions is that all cold nuclear matter effects have clear physical origins.The radios are compared with the corresponding experiment data and that calculated with classic nuclear effects. The ratios calculated with new definitions can reproduce almost all existing J/Psi measurements in p-A collisions more accuratly than that calculated with classic nuclear effects. Hence, this paper presents a new approach to explain cold nuclear effects in the hardproduction of quarkonium.