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

Abstract

Inclusive jet spectra from $pp$ and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV, 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 ($p_T$) greater than 70 $GeV /c$ and pseudorapidity $|\eta|<2$. 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 $p_T$. They are found to be independent of the distance parameter in the measured kinematic range.

Additional indexing

Item Type:Journal Article, not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2017
Deposited On:08 Dec 2017 14:27
Last Modified:16 Jun 2025 01:37
Publisher:SCIENCEDOMAIN International
ISSN:2231-1815
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1103/PhysRevC.96.015202
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