Abstract

The unprecedented center-of-mass energy available at the LHC offers unique opportunities for studying the properties of the strongly-interacting QCD matter created in PbPb collisions at extreme temperatures and very low parton momentum fractions. With its high precision, large acceptance for tracking and calorimetry, and a trigger scheme that allows analysis of each minimum bias PbPb event in the high-level trigger, CMS is fully equipped to study dimuon production in the high multiplicity environment of nucleus-nucleus collisions. Such probes are especially relevant for these studies since they are produced at early times and propagate through the medium, mapping its evolution. The capabilities of the CMS experiment to study dimuon production in pp and PbPb collisions based on LHC runs in 2010 and 2011 will be reviewed. In particular, CMS is able to measure prompt and non-prompt J/ψs, but also the first 3 γ states, differentially in pT and rapidity. In heavy ions, the observation of quarkonia at SNN = 2.76 TeV will be presented, and the Z boson inclusive and differential measurement as probe of the initial state will be detailed.

Highlights

  • The suppression of quarkonium states in the quark-gluon plasma (QGP) [1] and the propagation of heavy quarks in the medium [2] are promising probes for studying the properties of the QGP

  • The capabilities of the CMS experiment to study dimuon production in pp and PbPb collisions based on LHC runs in 2010 and 2011 will be reviewed

  • This paper presented highlights of CMS quarkonia and Z boson measurement in pp and PbPb collisions

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Summary

Introduction

The suppression of quarkonium states in the quark-gluon plasma (QGP) [1] and the propagation of heavy quarks in the medium [2] are promising probes for studying the properties of the QGP. Dimuon Results in PbPb and pp Collisions in CMS The observation of quarkonia at sNN = 2.76 TeV will be presented, and the Z boson inclusive and differential measurement as probe of the initial state will be detailed.

Results
Conclusion
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