$J/ψ$ production and suppression in high energy proton-nucleus collisions

Yan-Qing Ma; Raju Venugopalan; Hong-Fei Zhang

Paper

$J/ψ$ production and suppression in high energy proton-nucleus collisions

Abstract

We apply a Color Glass Condensate+Non-Relativistic QCD (CGC+NRQCD) framework to compute

production in deuteron-nucleus collisions at RHIC and proton-nucleus collisions at the LHC. Our results match smoothly at high

to a next-to-leading order perturbative QCD + NRQCD computation. Excellent agreement is obtained for

spectra at RHIC and LHC for central and forward rapidities, as well as for the normalized ratio

of these results to spectra in proton-proton collisions. In particular, we observe that the

data is strongly bounded by our computations of the same for each of the individual NRQCD channels; this result provides strong evidence that our description is robust against uncertainties in initial conditions and hadronization mechanisms.