J/ψ production in In–In and p–A collisions

E Scomparin, the NA60 Collaboration
2007 Journal of Physics G: Nuclear and Particle Physics  
The NA60 experiment studies dimuon production in In-In and p-A collisions at the CERN SPS. We report recent results on \jpsi production, measured through its muon pair decay. As a function of centrality, we show that in In-In the \jpsi yield is suppressed beyond expectations from nuclear absorption. We present also for the first time results on \jpsi production in p-A collisions at 158 GeV, the same energy of the nucleus-nucleus data. For both p-A and In-In we show preliminary results on \psip
more » ... uppression. Finally, we have studied the kinematical distributions of the \jpsi produced in In-In collisions. We present results on transverse momentum and rapidity, as well as on the angular distribution of the \jpsi decay products.
doi:10.1088/0954-3899/34/8/s35 fatcat:g6yapqiyxrdahc24rr3k34u7cy