Quarkonia production at forward rapidities with the ALICE experiment

The suppression pattern of quarkonia in AA (nucleus-nucleus) collisions (where the plasma of deconfined quarks and gluons, the Quark-Gluon Plasma (QGP) formation is expected), along with the comparative quarkonia production in pp collisions provides important understanding into the properties of the produced medium. Experimental results of Relativistic Heavy Ion Collider(RHIC) indicate a suppression on charmonium production in AA collisions. Muons from the decay of charmonium resonances are detected in the ALICE Experiment at the Large Hadron Collider(LHC) for pp and Pb-Pb collisions with a muon spectrometer, covering the forward rapidity region 2.5< y <4.0. Analysis of the nuclear modification factor (RAA) at forward rapidity are presented and compared with mid-rapidity results with electrons in the central barrel covering |y| <0.9. The roles of suppression and regeneration mechanisms are discussed, as well as the importance of the results of the forthcoming p-Pb data taking for the estimate of cold nuclear matter effects on quarkonia. Perspectives for the bottomonia measurements are also given. Quarkonia results via muon channel from CMS experiment at LHC are compared with ALICE quarkonia measurements. (author)