Quarkonia Measurements by the CMS Experiment in pp and PbPb Collisions

Abstract

Quarkonia have been studied in different collision system and energy in order to understand the effects of the hot and dense medium created in heavy-ion collisions. CMS is well suited to measure quarkonia decays to muons given the muon identification and charged particle tracking capability. We report here prompt, non-prompt J/ψ, and Υ production measured by the CMS experiment in pp collisions at \sqrt{s}=7 TeV. In addition, the J/ψ and Υ production in PbPb at \sqrt{s_{NN}}=2.76 TeV and pp collisions at the same per nucleon energy are measured and compared. Prompt and non-prompt J/ψ contributions are separated for the first time in heavy-ion collisions, as is the ground from the excited states in the Υ family. Suppression in PbPb at \sqrt{s_{NN}}=2.76 TeV is quantified for prompt J/ψ, B->J/ψ, and Υ(1S), as well as the relative suppression of Υ(2S+3S) compared to Υ(1S).

8 pages, 8 figures, Quark Matter 2011, plenary

References in corpus (4)

• Measuring the Upsilon Nuclear Modification Factor at STAR
• J/Psi production at forward rapidity in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV, measured with the ALICE detector
• Nuclear modification factors from the CMS experiment
• Charmonium production measured in PbPb and pp collisions by CMS

Cited by in corpus (13)

• Medium Effects on Charmonium Production at ultrarelativistic energies available at the CERN Large Haron Collider
• Heavy Quarkonium moving in a Quark-Gluon Plasma
• Upsilon suppression in PbPb collisions at the LHC
• Gluodissociation and Screening of Upsilon States in PbPb Collisions at sqrt (s_NN) = 2.76 TeV
• Signatures of charmonium modification in spatial correlation functions
• Centrality, rapidity, and transverse-momentum dependence of gluon shadowing and antishadowing on $J/\psi$ production in $d$Au collisions at $\sqrt{s}$=200 GeV
• ψ^\prime Production and B Decay in Heavy Ion Collisions at LHC
• Charmonium production from nonequilibrium charm and anticharm quarks in quark-gluon plasma
• Heavy quarkonium photoproduction in ultrarelativistic heavy ion collisions
• Overview of experimental results in PbPb collisions at sqrt{s_NN} = 2.76 TeV by the CMS Collaboration
• The physics potential of proton-nucleus collisions at the TeV scale
• The high energy frontier of ultrarelativistic nucleus-nucleus collisions
• Bottomonia suppression in an anisotropic quark-gluon plasma