# XIIIth Quark Confinement and the Hadron Spectrum

31 July 2018 to 6 August 2018
Maynooth University
Europe/Dublin timezone

## CANCELLED - Mass shift of charmonium states in $\bar p A$ collision

5 Aug 2018, 16:50
20m
Hall H (Arts Bldg.)

### Hall H

#### Arts Bldg.

Talk C: Heavy quarks

### Speaker

Gyorgy Wolf (Wigner FK)

### Description

The masses of the low lying charmonium states, namely, the $J/\Psi$, $\Psi(3686)$, and $\Psi(3770)$ are shifted downwards due to the second order Stark effect. In $\bar p + \text{Au}$ collisions at $6-10$~GeV we study their in\,-\,medium propagation. The time evolution of the spectral functions of these charmonium states is studied with a Boltzmann\,-\,Uehling\,-\,Uhlenbeck (BUU) type transport model. We show that their in\,-\,medium mass shift can be observed in the dilepton spectrum. Therefore, by observing the dileptonic decay channel of these low lying charmonium states, especially for $\Psi(3686)$, we can gain information about the magnitude of the gluon condensate in nuclear matter. This measurement could be performed at the upcoming PANDA experiment at FAIR.

### Primary authors

Gyorgy Wolf (Wigner FK) Peter Kovacs (Wigner RCP) Miklos Zetenyi (Wigner RCP, Budapest) Su Houng Lee (Yonsei University) Mr Gabor Balassa (MTA WIgner RCP)

### Presentation Materials

There are no materials yet.