Title: Mass shift of charmonium states in`p  A collision 
Speaker: Prof. Wolf Gyorgy (Wigner Research Center for Physics) 
Time: 10:00AM, June 11th, 2018 (Monday) 
Place: Theoretical Physics Division, 319 
Abstract: 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 `p + 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.