J/ψ suppression at forward rapidity in Pb-Pb collisions at sqrt(sNN) = 5.02 TeV

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5.02 TeV
Abstract Plain Text: 
The inclusive \jpsi production in \mbox{Pb-Pb} interactions at the center-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\rm NN}}=5.02$ TeV has been studied using the ALICE detector at the CERN LHC. 
The J/$\psi$ meson is detected via its decay to muon pairs in the centre-of-mass rapidity region $2.5<y<4$. 
In this Letter, we present results on the nuclear modification factor $R_{\rm AA}$, as a function of the centrality of the collision and, for central collisions, of the transverse momentum $p_{\rm T}$ of the J/$\psi$. 
The measured values are compared to previous results obtained by ALICE in \mbox{Pb-Pb} collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV. 
The ratio between the $R_{\rm AA}$ obtained at the two energies is also computed and compared to calculations of transport and statistical models. 
{\it To be tuned } We find indications for an increase of $R_{\rm AA}$ with $\sqrt{s_{\rm NN}}$ by about 10\%, from peripheral  to central collisions. 
In central events, as a function of $p_{\rm T}$, the increase of $R_{\rm AA}$ with $\sqrt{s_{\rm NN}}$ is more evident at low $p_{\rm T}$. 
A good agreement with theoretical models is found.