Charmonium dissociation in collision with phi meson in hadronic matter

TL;DR

This paper investigates how phi mesons cause charmonium dissociation in hadronic matter by calculating temperature-dependent cross sections and dissociation rates, shedding light on charmonium suppression mechanisms.

Contribution

It provides the first detailed calculation of phi-charmonium dissociation cross sections considering temperature effects using the quark-interchange model.

Findings

Cross sections show significant temperature dependence.

Dissociation rates vary with temperature and charmonium momentum.

Results inform understanding of charmonium suppression in hadronic environments.

Abstract

The phi-charmonium dissociation reactions in hadronic matter are studied. Unpolarised cross sections for 12 reactions are calculated in the Born approximation, in the quark-interchange mechanism and with a temperature-dependent quark potential. The potential leads to remarkable temperature dependence of the cross sections. With the cross sections and the phi distribution function we calculate the dissociation rates of the charmonia in the interactions with the phi meson in hadronic matter. The dependence of the rates on temperature and charmonium momentum is meaningful to the influence of phi mesons on charmonium suppression.