Speaker
Dr
Biswarup Paul
(Universita e INFN Torino (IT))
Description
The ALICE Collaboration has studied inclusive J/$\psi$ and $\psi$(2S) production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 and 8.16 TeV. The measurements were performed at forward (2.03 $<$ $y_{\rm cms}$ $<$ 3.53), mid ($-$1.37 $<$ $y_{\rm cms}<$ 0.43) and backward ($-$4.46 $<$ $y_{\rm cms}$ $<$ $-$2.96) centre of mass rapidities. In this presentation, the nuclear modification factor of J/$\psi$ and $\psi$(2S), measured as a function of rapidity, transverse momentum and event centrality, will be discussed. Theoretical models based on nuclear shadowing and/or coherent energy loss are in reasonable agreement with the J/$\psi$ results at the two energies but cannot describe the $\psi$(2S) behaviour. Other final-state mechanisms must be invoked in order to explain the $\psi$(2S) suppression in p-Pb collisions.
Primary author
Dr
Biswarup Paul
(Universita e INFN Torino (IT))
