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

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

Aug 5, 2018, 4:50 PM
Hall H (Arts Bldg.)

Hall H

Arts Bldg.

Talk C: Heavy quarks Heavy quarks


Gyorgy Wolf (Wigner FK)


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)

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