# Charmonium Excitation functions in $\bar p$A Collisions

## TL;DR

This paper investigates how the production of the charmonium state $ ext{ extPsi}(3686)$ in antiproton-gold collisions is affected by the nuclear medium, using a transport model to predict excitation functions relevant for upcoming experiments.

## Contribution

It introduces a BUU transport model to study in-medium propagation and excitation functions of $ ext{ extPsi}(3686)$ in $ar p$A collisions, highlighting medium effects on production.

## Key findings

- Excitation function of $ ext{ extPsi}(3686)$ is strongly affected by the nuclear medium.
- The energy regime studied will be accessible to the PANDA experiment.
- In-medium spectral functions evolve over time, influencing observable yields.

## Abstract

We study the excitation function of the low-lying charmonium state: $\Psi$(3686) in $\bar p$ Au collisions taking into account their in-medium propagation. The time evolution of the spectral functions of the charmonium state is studied with a BUU type transport model. We calculated the excitation function of $\Psi$(3686) production and show that it is strongly effected by the medium. The energy regime will be available for the PANDA experiment.