Relativistic diffusion model for hadron production in p-Pb collisions at the LHC

Abstract

We investigate charged-hadron production in relativistic heavy-ion collisions of asymmetric systems within a nonequilibrium-statistical framework. Calculated centrality-dependent pseudorapidity distributions for p-Pb collisions at sqrt(s_NN)=5.02 and 8.16 TeV are compared with data from the Large Hadron Collider (LHC). Our approach combines a relativistic diffusion model with formulations based on quantum chromodynamics while utilizing numerical solutions of a Fokker-Planck equation to account for the shift and broadening of the fragmentation sources for particle-production with respect to the stopping (net-baryon) rapidity distributions. To represent the centrality dependence of charged-hadron production in asymmetric systems over a broad region of pseudorapidities, the consideration and precise modelling of the fragmentation sources - along with the central gluon-gluon source - is found to be essential. Specifically, this results in an inversion of the particle-production amplitude from backward- to forward-dominance when transitioning from central to peripheral collisions, in agreement with recent ATLAS and ALICE p-Pb data at sqrt(s_NN)=5.02 TeV.

arXiv comment14 pages, 6 figures, 3 new references and added text, as accepted for Phys. Rev. C

References in corpus (40)

• Computing Quark and Gluon Distribution Functions for Very Large Nuclei
• Saturation Effects in Deep Inelastic Scattering at low $Q^2$ and its Implications on Diffraction
• Hadron production in nuclear collisions at RHIC and high density QCD
• Manifestations of high density QCD in the first RHIC data
• The Color Glass Condensate and hadron production in the forward region
• Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon
• Phobos results on charged particle multiplicity and pseudorapidity distributions in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultra-relativistic energies
• Inclusive Gluon Production in DIS at High Parton Density
• Nuclear Stopping in Au+Au Collisions at sqrt(sNN) = 200 GeV
• Centrality dependence of particle production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$= 5.02 TeV
• Single inclusive particle production at high energy from HERA data to proton-nucleus collisions
• Nuclear Modification Factor in d+Au Collisions: Onset of Suppression in the Color Glass Condensate
• Pseudorapidity density of charged particles in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• The onset of classical QCD dynamics in relativistic heavy ion collisions
• CGC predictions for p+Pb collisions at the LHC
• Single Inclusive Hadron Production at RHIC and the LHC from the Color Glass Condensate
• Particle Production at High Energy and Large Transverse Momentum - "The Hybrid Formalism" Revisited
• Particle multiplicities in Lead-Lead collisions at the LHC from non-linear evolution with running coupling
• CGC predictions for p+A collisions at the LHC and signature of QCD saturation
• Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Gluon saturation in $pA$ collisions at the LHC: KLN model predictions for hadron multiplicities
• Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton--lead collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=5.02$ TeV with the ATLAS detector
• On the gluon spectrum in the glasma
• Predictions for Cold Nuclear Matter Effects in $p+$Pb Collisions at $\sqrt{s_{{}_{NN}}}=8.16$ TeV
• Baryon Stopping as a new Probe of Geometric Scaling
• Anomalous diffusion in non-equilibrium relativistic heavy-ion rapidity spectra
• Particle production sources at LHC energies
• Local Thermalization in the d + Au System
• Baryon stopping and saturation physics in relativistic collisions
• Has saturation physics been observed in deuteron-gold collisions at RHIC?
• Ultraviolet energy dependence of particle production sources in relativistic heavy-ion collisions
• Charged-particle pseudorapidity density at mid-rapidity in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• System-size dependence of the charged-particle pseudorapidity density at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV for pp, p-Pb, and Pb-Pb collisions
• Baryon stopping as a relativistic Markov process in phase space
• Testing the running coupling $k_T$-factorization formula for the inclusive gluon production
• Probing the Color Glass Condensate in $pp$ collisions at forward rapidities and very low transverse momenta
• Analysis of pPb collisions at LHC energies in the relativistic diffusion model
• Limiting fragmentation in heavy-ion stopping?
• Cylindrically symmetric diffusion model for relativistic heavy-ion collisions
• Diffusion-model analysis of pPb and PbPb collisions at LHC energies

Cited by in corpus (1)

• Predictions for charged-hadron production in $p$-O collisions at LHC energies