Medium effects on the quarkonia states above critical temperature

TL;DR

This study investigates how medium effects, modeled via a temperature-dependent color screening potential, influence the properties and correlators of quarkonia states above the critical temperature, revealing significant mass and wave function modifications.

Contribution

It introduces a temperature-dependent power-law color screening potential to analyze quarkonia above the critical temperature, aligning some results with lattice QCD data.

Findings

Significant medium modifications to quarkonia masses and wave functions.

Correlator behaviors match lattice results in vector and scalar channels.

Pseudoscalar channel correlators differ from lattice predictions.

Abstract

We present the quarkonia correlators for charmonium and bottomonium systems in the pseudoscalar, vector and scalar channels. For the description of quark-antiquark interaction we adopt the temperature dependant colour screening potential of the power law form. The spectroscopic parameters defined from the model are employed in the spectral functions to compute the quarkonia correlators. We find considerable medium modifications to the effective masses of the quarkonia as well as in the behaviour of the respective radial wave functions. These modifications are then reflected in the computed correlators. The general behaviour of correlators in the vector and scalar channel are in accordance with the latest lattice results while their behaviour in the pseudoscalar channels are found to be different.