In-Medium Y-Suppression and Feed-down in UU and PbPb Collisions

Abstract

The suppression of Y mesons in the hot quark-gluon medium (QGP) versus reduced feed-down is investigated in UU collisions at RHIC energies and PbPb collisions at LHC energies. Our centrality- and p_T-dependent model encompasses screening, collisional damping and gluodissociation in the QGP. For Y(1S) it is in agreement with both STAR and CMS data provided the relativistic Doppler effect and the reduced feed-down from the Y(nS) and chi_b(nP) states are properly considered. At both energies, most of the Y(1S) suppression is found to be due to reduced feed-down, whereas most of the Y(2S) suppression is caused by the hot-medium effects. The role of the latter increases with energy. The p_T-dependence is flat due to the relativistic Doppler effect and reduced feed-down. We predict the Y(1S)-suppression in PbPb at sqrt(s_NN) = 5.02 TeV.

8 pages, 6 figures, 2 tables; updated text, figures, results and references for PRC (published version)

References in corpus (8)

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Cited by in corpus (27)

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• Predictions for bottomonia suppression in 5.023 TeV Pb-Pb collisions
• Collisional and thermal dissociation of $J/\psi$ and ${\rm Y}$ states at the LHC
• Quarkonium in-medium properties from realistic lattice NRQCD
• Extraction of the Heavy-Quark Potential from Bottomonium Observables in Heavy-Ion Collisions
• Measurement of sequential ${\rm Y}$ suppression in Au+Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV with the STAR experiment
• Anisotropic escape mechanism and elliptic flow of bottomonia
• Quarkonium propagation in the quark gluon plasma
• An Effective Theory of Quarkonia in QCD Matter
• Centrality and transverse momentum dependent suppression of ${\rm Y}(1S)$ and ${\rm Y}(2S)$ in p$-$Pb and Pb$-$Pb collisions at the CERN Large Hadron Collider
• Charmonium suppression in ultra-relativistic proton-proton collisions at LHC energies: A hint for QGP in small systems
• Electromagnetic field effects on ${\rm Y}$-meson dissociation in PbPb collisions at LHC energies
• Fireball tomography from bottomonia elliptic flow in relativistic heavy-ion collisions
• In-Medium Bottomonium Production in Heavy-Ion Collisions
• Equilibration in fermionic systems
• Bottomonium spectroscopy in the quark-gluon plasma
• Aspects of relativistic heavy-ion collisions
• Local equilibration of fermions and bosons
• Hot-medium effects on ${\rm Y}$ yields in pPb collisions at $\sqrt{s_{\text{NN}}}=8.16$ TeV
• Nonlinear diffusion of gluons
• Quarkonia formation in a holographic gravity-dilaton background describing QCD thermodynamics
• In-medium Y(1S,2S,3S) suppression in Pb-Pb collisions at sqrt(s_NN)=5.02 TeV
• Spin alignment of Quarkonia: A Possible Probe of Deconfined QCD matter in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Exact solution of the nonlinear boson diffusion equation for gluon scattering
• Applicability of Hydrodynamics in Hadronic Phase of Heavy-Ion Collisions
• Holographic bottomonium formation in a cooling strong-interaction medium at finite baryon density