Nuclear $p_{\perp }$-broadening of Drell-Yan and quarkonium production from SPS to LHC

Abstract

The nuclear $p_{\perp }$-broadening of Drell-Yan and quarkonium ($J/\psi$, ${\rm Y}$) production in $\pi$A and pA collisions is investigated. The world data follow a simple scaling from SPS to LHC energies, once the process-dependent color factors are properly taken into account, which allows for the extraction of the transport coefficient in cold nuclear matter. We find that $\hat{q}(x)\propto x^{-\alpha }$ with $\alpha =0.25$-$0.30$. The magnitude of the transport coefficient at $x=10^{-2}$ is ${\hat{q}}_0=0.051$ GeV${}^2$/fm and ${\hat{q}}_0=0.075$ GeV${}^2$/fm, whether $Q\bar{Q}$ pairs are assumed to be produced as color octet or color singlet states, respectively. The relation between nuclear broadening data and the (CT14) gluon density is also investigated.

22 pages, 5 figures

References in corpus (9)

• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Universality of Unintegrated Gluon Distributions at small x
• The theory and phenomenology of perturbative QCD based jet quenching
• Jet physics in heavy-ion collisions
• Revisiting scaling properties of medium-induced gluon radiation
• The non-linear evolution of jet quenching
• Medium Induced Transverse Momentum Broadening in Hard Processes
• Broadening and saturation effects in dijet azimuthal correlations in p-p and p-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}=$ 5.02 TeV
• Quenching of light hadron spectra in pA collisions from fully coherent energy loss

Cited by in corpus (6)

• Heavy quarks and jets as probes of the QGP
• QCD resummation of dijet azimuthal decorrelations in pp and pA collisions
• Nuclear transverse momentum imbalance in the color dipole approach at the LHC regime
• Bjorken variable and scale dependence of quark transport coefficient in Drell-Yan process for proton incident on nucleus
• Bjorken variable and scale dependence of quark transport coefficient in semi-inclusive lepton-production of hadron off nuclei
• Atomic mass, Bjorken variable and scale dependence of quark transport coefficient in Drell-Yan process for proton incident on nucleus