Model study on ${\rm Y}(nS)$ modification in small collision systems

Abstract

Quarkonium production has been studied extensively in relativistic heavy-ion collision experiments to understand the properties of the quark gluon plasma. The experimental results on the yield modification in heavy-ion collisions relative to that in $p$+$p$ collisions can be described by several models considering dissociation and regeneration effects. A yield modification beyond initial-state effects has also been observed in small collision systems such as $p$+Au and $p$+Pb collisions, but it is still premature to claim any hot medium effect. A model study in various small collision systems such as $p$+$p$, $p$+Pb, $p$+O, and O+O collisions will help quantitatively understanding nuclear effects on the ${\rm Y}(nS)$ production. A theoretical calculation considering the gluo-dissociation and inelastic parton scattering and their inverse reaction reasonably describes the suppression of ${\rm Y}(1S)$ in Pb+Pb collisions. Based on this calculation, a Monte-Carlo simulation is developed to more realistically incorporate the medium produced in heavy-ion collisions with event-by-event initial collision geometry and hydrodynamic evolution. We extend this framework to small systems to study the medium effects. In this work, we quantify the nuclear modification factor of ${\rm Y}(nS)$ as a function of charged particle multiplicity ($d{N}_{ch}/d\eta$) and transverse momentum. We also calculate the elliptic flow of ${\rm Y}(nS)$ in small collision systems.

arXiv comment11 pages, 12 figures

References in corpus (50)

• Glauber Modeling in High Energy Nuclear Collisions
• Observation of Long-Range Near-Side Angular Correlations in Proton-Proton Collisions at the LHC
• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Long-range angular correlations on the near and away side in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Fluctuating Glasma initial conditions and flow in heavy ion collisions
• Real-time static potential in hot QCD
• Alternative ansatz to wounded nucleon and binary collision scaling in high-energy nuclear collisions
• Static quark-antiquark pairs at finite temperature
• Evidence for collectivity in pp collisions at the LHC
• The Pressure in 2, 2+1 and 3 Flavour QCD
• Observation of long-range elliptic anisotropies in $\sqrt{s}=$13 and 2.76 TeV $pp$ collisions with the ATLAS detector
• Quarkonium Feed-Down and Sequential Suppression
• Creating small circular, elliptical, and triangular droplets of quark-gluon plasma
• Colour Deconfinement and Quarkonium Binding
• Evidence for collective multi-particle correlations in pPb collisions
• Heavy Quarkonium in a weakly-coupled quark-gluon plasma below the melting temperature
• Color Screening and Regeneration of Bottomonia in High-Energy Heavy-Ion Collisions
• Measurement of nuclear modification factors of ${\rm Y}$(1S), ${\rm Y}$(2S), and ${\rm Y}$(3S) mesons in PbPb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• Measurement of the total cross section from elastic scattering in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Statistical Coalescence Model with Exact Charm Conservation
• Quarkonia in the Quark Gluon Plasma
• Measurement of prompt and nonprompt charmonium suppression in PbPb collisions at 5.02 TeV
• Evidence for charmonium generation at the phase boundary in ultra-relativistic nuclear collisions
• Quark Coalescence based on a Transport Equation
• Long-range pseudorapidity dihadron correlations in $d$+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV
• Suppression of Upsilon Production in d+Au and Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Heavy quark bound states in a quark-gluon plasma: dissociation and recombination
• Prompt and non-prompt $J/\psi$ and $\psi (2\mathrm{S})$ suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment
• Measurements of long-range near-side angular correlations in $\sqrt{s_{\text{NN}}}=5$TeV proton-lead collisions in the forward region
• $J/\Psi$ and ${\Psi }^{\prime }$ Suppression in Heavy Ion Collisions
• Is bottomonium suppression in proton-nucleus and nucleus-nucleus collisions at LHC energies due to the same effects?
• Exploring New Small System Geometries in Heavy Ion Collisions
• Measurement of ${\rm Y}(1\mathrm{S})$ elliptic flow at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Shadowing Effects on $J/\psi$ and ${\rm Y}$ Production at the LHC
• Impact parameter dependence of the nuclear modification of J/psi production in d+Au collisions at sqrt(S_NN) = 200 GeV
• Charmonium suppression in p-A collisions
• Forward production of ${\rm Y}$ mesons in $pp$ collisions at $\sqrt{s}=7$ and 8TeV
• Measurements of the Upsilon(1S), Upsilon(2S), and Upsilon(3S) differential cross sections in pp collisions at sqrt(s) = 7 TeV
• Quarkonium suppression in heavy-ion collisions from coherent energy loss in cold nuclear matter
• Measurement of the azimuthal anisotropy of ${\rm Y}$(1S) and ${\rm Y}$(2S) mesons in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• ${\rm Y}$ production and nuclear modification at forward rapidity in Pb-Pb collisions at $\sqrt{{\text{s}}_{\text{NN}}}=5.02$ TeV
• Studies of J/$\psi$ production at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Inclusive Production of Heavy Quarkonia in pNRQCD
• Nuclear modification of ${\rm Y}$ states in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Charged-particle pseudorapidity density at mid-rapidity in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV
• Pseudorapidity distributions of charged hadrons in proton-lead collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 and 8.16 TeV
• Multiparticle correlation studies in pPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 8.16 TeV
• Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at $\sqrt{\text{s}}=13$ TeV
• ${\rm Y}(1S)$ transverse momentum spectra through dissociation and regeneration in heavy ion collisions

Cited by in corpus (1)

• Study of azimuthal anisotropy of ${\rm Y}$(1S) mesons in pPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 8.16 TeV