Speaker
Marco Leoncino
(University of Turin and INFN (IT))
Description
The ALICE Collaboration has studied the inclusive $\psi(\mathrm{2S})$ production in pp, p-Pb and Pb-Pb collisions at the CERN LHC. The $\psi(\mathrm{2S})$ is detected through its decay to muon pairs, using the Forward Dimuon Spectrometer, which covers the rapidity range 2.5<$y_{lab}$<4. The $\psi(\mathrm{2S})$ production cross sections in pp collisions will be presented, both integrated and differential in rapidity and in transverse momentum. In p-Pb collisions, $\psi(\mathrm{2S})$ results will be compared to the J/$\psi$ ones by means of the production cross sections ratio studied as a function of the transverse momentum and event activity. The $\psi(\mathrm{2S})$ nuclear modification factor, $R_{pA}$
, will also be presented. The results show a larger $\psi(\mathrm{2S})$ suppression compared to the one observed for the J/$\psi$ and are not described by theoretical models including cold nuclear matter effects as nuclear shadowing and energy loss. Finally, preliminary results on $\psi(\mathrm{2S})$ production in Pb-Pb collisions will be shown in two $p_{T}$ ranges as a function of centrality. Also in this case, the $\psi(\mathrm{2S})$ production will be compared to the J/$\psi$ one and to the corresponding pp results.
Primary author
Marco Leoncino
(University of Turin and INFN (IT))
