Measurement of the charged particle nuclear modification factor in PbPb collisions at $\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}$

Measurement of the charged particle nuclear modification factor in PbPb collisions at $\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}$

CMS

Collaboration

2016

17 pages

Report number:

CMS-PAS-HIN-15-015

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

pdf

reference search8 citations

Citations per year

Abstract:

The nuclear modification factor,

R_{\rm AA}

, of charged particles produced in the

|\eta|<1

pseudorapidity region is measured at

\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}

using

404~\mu\mathrm{b}^{-1}

of PbPb and

25.8~\mathrm{pb}^{-1}

of pp data collected by the CMS experiment at the end of 2015. The

R_{\rm AA}

is presented in several bins of collision centrality, over the transverse momentum range of

0.7-400~\mathrm{GeV}

. The measured

R_{\rm AA}

in the

0-5\%

most central collision class shows a maximum suppression by a factor of approximately

7.5

in the

6-9~\mathrm{GeV}

p_\mathrm{T}

region, followed by a rising trend up to the highest transverse momenta measured in the analysis. The measurement is compared to earlier results at lower collision energies, and to theory predictions.

Note:

Preliminary results

Data
inclusive production
charged particle
transverse momentum
jet
dijet
trigger
threshold
track data analysis
vertex: primary

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Measurement of the charged particle nuclear modification factor in PbPb collisions at sNN=5.02 TeV\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}sNN​​=5.02 TeV

Citations per year

Measurement of the charged particle nuclear modification factor in PbPb collisions at $\sqrt{s_{\rm NN}}=5.02~\mathrm{TeV}$