Centrality and transverse momentum dependence of inclusive J/$\psi$ production at midrapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV

Abstract

The inclusive J/$\psi$ meson production in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon collision of $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV at midrapidity ($|y|$ < 0.9) is reported by the ALICE Collaboration. The measurements are performed in the dielectron decay channel, as a function of event centrality and J/$\psi$ transverse momentum $p_{\mathrm{T}}$, down to $p_{\mathrm{T}}$ = 0 GeV/$c$. The J/$\psi$ mean transverse momentum $⟨p_{\mathrm{T}}⟩$ and $r_{\mathrm{AA}}$ ratio, defined as $⟨p_{\mathrm{T}}^2{⟩}_{\mathrm{PbPb}}/⟨p_{\mathrm{T}}^2{⟩}_{\mathrm{pp}}$, are evaluated. Both observables show a centrality dependence decreasing towards central (head-on) collisions. The J/$\psi$ nuclear modification factor $R_{\mathrm{AA}}$ exhibits a strong $p_{\mathrm{T}}$ dependence with a large suppression at high $p_{\mathrm{T}}$ and an increase to unity for decreasing $p_{\mathrm{T}}$. When integrating over the measured momentum range $p_{\mathrm{T}}$ < 10 GeV/$c$, the J/$\psi$ $R_{\mathrm{AA}}$ shows a weak centrality dependence. Each measurement is compared with results at lower center-of-mass energies and with ALICE measurements at forward rapidity, as well as to theory calculations. All reported features of the J/$\psi$ production at low $p_{\mathrm{T}}$ are consistent with a dominant contribution to the J/$\psi$ yield originating from charm quark (re)combination.

arXiv comment24 pages, 8 captioned figures, 2 tables, authors from page 19, published version, figures at http://alice-publications.web.cern.ch/node/5653

References in corpus (47)

• Full result for the QCD equation of state with 2+1 flavors
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• Performance of the ALICE Experiment at the CERN LHC
• The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• Equation of state and QCD transition at finite temperature
• 3+1D hydrodynamic simulation of relativistic heavy-ion collisions
• (Non)Thermal Aspects of Charmonium Production and a New Look at J/$\psi$ Suppression
• Enhanced J/Psi Production in Deconfined Quark Matter
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Centrality determination of Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV with ALICE
• Performance of the ALICE VZERO system
• Alignment of the ALICE Inner Tracking System with cosmic-ray tracks
• A new measurement of J/psi suppression in Pb-Pb collisions at 158 GeV per nucleon
• Medium Modifications and Production of Charmonia at LHC
• J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Charmonium and $e^{+}{e}^{-}$ pair photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=2.76 TeV
• Centrality dependence of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Centrality, rapidity and transverse momentum dependence of $J/\psi$ suppression in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$=2.76 TeV
• Sequential charmonium dissociation
• Nuclear shadowing
• J/psi suppression at forward rapidity in Au+Au collisions at sqrt(s_NN)=200 GeV
• Medium Effects on Charmonium Production at ultrarelativistic energies available at the CERN Large Haron Collider
• Sequential Regeneration of Charmonia in Heavy-Ion Collisions
• J/$\psi$ suppression at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Quarkonia in the Quark Gluon Plasma
• Transverse Momentum Spectra of J/ψin Heavy-Ion Collisions
• J/psi Production in sqrt (s_NN)= 200 GeV Cu+Cu Collisions
• Measurement of prompt and nonprompt charmonium suppression in PbPb collisions at 5.02 TeV
• Measurement of an excess in the yield of J/$\psi$ at very low $p_{\mathrm{T}}$ in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• D-meson azimuthal anisotropy in mid-central Pb-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=5.02$ TeV
• Evidence for charmonium generation at the phase boundary in ultra-relativistic nuclear collisions
• Measurement of prompt D${}^0$ meson azimuthal anisotropy in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$5.02 TeV
• 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
• Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV
• Charmonium dissociation and recombination at LHC: Revisiting comovers
• Transverse momentum distributions of charmonium states with the statistical hadronization model
• $J/\Psi$ and ${\Psi }^{\prime }$ Suppression in Heavy Ion Collisions
• Differential studies of inclusive J/$\psi$ and $\psi$(2S) production at forward rapidity in Pb-Pb collisions at $\sqrt{{\text{s}}_{{}_{\mathbf{NN}}}}$ = 2.76 TeV
• $J/\psi$ production at low $p_T$ in Au+Au and Cu+Cu collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV at STAR
• Inclusive, prompt and non-prompt J/$\psi$ production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• J/$\psi$ elliptic flow in Pb-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}$ = 5.02 TeV
• Systematic Errors: facts and fictions
• Kaon femtoscopy in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Studies of J/$\psi$ production at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Inclusive J/$\psi$ production at mid-rapidity in pp collisions at $\sqrt{s}$ = 5.02 TeV
• Inclusive J/$\psi$ production in Xe-Xe collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.44 TeV

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