Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt{s_{NN}}=$ 2.76 TeV - INSPIRE

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Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt{s_{NN}}=$ 2.76 TeV

CMS

Collaboration

Sep 17, 2016

20 pages

Published in:

Phys.Rev.C 96 (2017) 1, 015202

Published: Jul 17, 2017

e-Print:

1609.05383 [nucl-ex]

DOI:

10.1103/PhysRevC.96.015202

Report number:

CMS-HIN-13-005,
CERN-EP-2016-217

Experiments:

CERN-LHC-CMS

View in:

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Abstract: (APS)

Inclusive jet spectra from pp and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76TeV, collected with the CMS detector at the CERN Large Hadron Collider, are presented. Jets are reconstructed with three different distance parameters (R=0.2, 0.3, and 0.4) for transverse momentum (pT) greater than 70GeV/c and pseudorapidity |η|<2. Next-to-leading-order quantum chromodynamic calculations with nonperturbative corrections are found to overpredict jet production cross sections in pp for small distance parameters. The jet nuclear modification factors for PbPb compared to pp collisions, show a steady decrease from peripheral to central events, along with a weak dependence on the jet pT. They are found to be independent of the distance parameter in the measured kinematic range.

Note:

Replaced with the published version. All the figures and tables, including an additional supplemental figure, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-13-005/index.html (CMS Public Pages)

jet: production
correction: nonperturbative
p p: scattering
heavy ion: scattering
lead
higher-order: 1
jet: quenching
track data analysis
transverse momentum
nucleon nucleon

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