Measurement of inclusive very forward jet cross sections in proton-lead collisions at s N N √sNN = 5.02 TeV
Name
Sirunyan2019_Article_MeasurementOfInclusiveVeryForw.pdf
Description
Published version
Size
909.24 KB
Format
Adobe PDF
Checksum (MD5)
5efcc332a5078179648309940d59c259
Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, B.
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Date Issued
May 2019
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
CMS Collaboration (Sirunyan, A. et al.) "Measurement of inclusive very forward jet cross sections in proton-lead collisions at s NN √sNN = 5.02 TeV." Journal of High Energy Physics 2019 (May 2019): 43 ©2019 Author(s)
Version
Final published version
Abstract
Measurements of differential cross sections for inclusive very forward jet production in proton-lead collisions as a function of jet energy are presented. The data were collected with the CMS experiment at the LHC in the laboratory pseudorapidity range −6.6 < η < −5.2. Asymmetric beam energies of 4 TeV for protons and 1.58 TeV per nucleon for Pb nuclei were used, corresponding to a center-of-mass energy per nucleon pair of sNN = 5.02 TeV. Collisions with either the proton (p+Pb) or the ion (Pb+p) traveling towards the negative η hemisphere are studied. The jet cross sections are unfolded to stable-particle level cross sections with p T ≳ 3 GeV, and compared to predictions from various Monte Carlo event generators. In addition, the cross section ratio of p+Pb and Pb+p data is presented. The results are discussed in terms of the saturation of gluon densities at low fractional parton momenta. None of the models under consideration describes all the data over the full jet-energy range and for all beam configurations. Discrepancies between the differential cross sections in data and model predictions of more than two orders of magnitude are observed.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP05(2019)043
