Suppression of excited ${\rm Y}$ states relative to the ground state in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV

Abstract

The relative yields of ${\rm Y}$ mesons produced in pp and PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, ${\rm Y}$(2S) and ${\rm Y}$(3S), to the ground state, ${\rm Y}$(1S), in both PbPb and pp collisions at the same center-of-mass energy. The double ratios, [${\rm Y}$(nS)/${\rm Y}$(1S)]${}_{\mathrm{PbPb}}$ / [${\rm Y}$(nS)/${\rm Y}$(1S)]${}_{\mathrm{pp}}$, are measured to be 0.308 $\pm$ 0.055 (stat) $\pm$ 0.019 (syst) for the ${\rm Y}$(2S) and less than 0.26 at 95% confidence level for the ${\rm Y}$(3S). No significant ${\rm Y}$(3S) signal is found in the PbPb data. The double ratios are studied as a function of collision centrality, as well as dimuon transverse momentum and rapidity. No significant dependencies are observed.

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-16-008 (CMS Public Pages)

References in corpus (13)

• Heavy quarkonium: progress, puzzles, and opportunities
• Description and performance of track and primary-vertex reconstruction with the CMS tracker
• Performance of CMS muon reconstruction in pp collision events at sqrt(s) = 7 TeV
• Static quark-antiquark pairs at finite temperature
• Observation of sequential Upsilon suppression in PbPb collisions
• Color Screening Melts Quarkonium
• Quarkonium suppression in heavy-ion collisions: an open quantum system approach
• Color Screening and Regeneration of Bottomonia in High-Energy Heavy-Ion Collisions
• The imaginary part of the static gluon propagator in an anisotropic (viscous) QCD plasma
• Evidence for charmonium generation at the phase boundary in ultra-relativistic nuclear collisions
• Suppression of ${\rm Y}$(1S) at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• An Upgrade Proposal from the PHENIX Collaboration
• Measurement of prompt psi(2S) to J/psi yield ratios in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV

Cited by in corpus (33)

• 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
• Bottomonium suppression in an open quantum system using the quantum trajectories method
• Improved Gauss law model and in-medium heavy quarkonium at finite density and velocity
• Excited bottomonia in quark-gluon plasma from lattice QCD
• Heavy quark potential in quark-gluon Plasma: Deep neural network meets lattice quantum chromodynamics
• Bottomonium production in heavy-ion collisions using quantum trajectories: Differential observables and momentum anisotropy
• A Fixed-Target Programme at the LHC: Physics Case and Projected Performances for Heavy-Ion, Hadron, Spin and Astroparticle Studies
• Extraction of the Heavy-Quark Potential from Bottomonium Observables in Heavy-Ion Collisions
• 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
• Regeneration of bottomonia in an open quantum systems approach
• Measurement of prompt $\psi$(2S) production cross sections in proton-lead and proton-proton 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
• Bottomonium suppression and elliptic flow using Heavy Quarkonium Quantum Dynamics
• $J/\psi$ photo-production in Pb-Pb peripheral collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5 TeV
• Production of ${\rm Y}(\text{nS})$ mesons in Pb+Pb and $pp$ collisions at 5.02 TeV
• Prospects for quarkonium studies at the high-luminosity LHC
• Charmonium and bottomonium spectral functions in the vector channel
• Machine learning spectral functions in lattice QCD
• The impact of fluctuating initial conditions on bottomonium suppression in 5.02 TeV heavy-ion collisions
• Charm and beauty in the deconfined plasma from quenched lattice QCD
• Centrality dependence of J/$\psi$ and $\psi$(2S) production and nuclear modification in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 8.16 TeV
• Bottomonium suppression at RHIC and LHC in an open quantum system approach
• Production of bottomonia states in proton+proton and heavy-ion collisions
• Transverse momentum dependent feed-down fractions for bottomonium production
• Quarkonium production and suppression: Theory
• Bottomonium transport in p-Pb and Pb-Pb collisions at the LHC
• Experimental review of the ${\rm Y}(1S,2S,3S)$ physics at $e^{+}{e}^{-}$ colliders and the LHC
• Suppression of quarkonia in PbPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV
• Study of quarkonium in QGP from unquenched lattice QCD
• Performance of CMS muon reconstruction from proton-proton to heavy ion collisions
• Exploring QGP-like phenomena with Charmonia in $p+p$ collisions at $\sqrt{s}=13$ TeV
• Quarkonium Production in the QGP
• Holographic bottomonium formation in a cooling strong-interaction medium at finite baryon density