Study of jet quenching using photon-jet events in PbPb collisions at 2.76 TeV with CMS
Name
Lai-2013-Study of jet quenchi.pdf
Size
258.98 KB
Format
Adobe PDF
Checksum (MD5)
f47dc8650f0e5ae45f1964c6defcca7d
Author(s)
Lai, Yue Shi
Date Issued
May 2013
Journal
Nuclear Physics A
Publisher
Elsevier
Citation
Lai, Yue Shi. “Study of Jet Quenching Using Photon-Jet Events in PbPb Collisions at 2.76 TeV with CMS.” Nuclear Physics A 904–905 (May 2013): 685c–688c. © 2013 CERN for the benefit of the CMS Collaboration
Version
Final published version
Abstract
The first measurement of the transverse momentum (p[subscript T]) imbalance of isolated–photon + jet pairs in relativistic heavy ion collisions is reported. The analysis uses data from PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair, corresponding to an integrated luminosity of 150μb[superscript −1] recorded by the CMS experiment at the LHC in 2011. For events containing an isolated photon with transverse momentum p[subscript T] > 60GeV/c and an associated jet with p[subscript T] > 30GeV/c, the photon + jet p[subscript T] imbalance is studied as a function of collision centrality and compared to pp data and pythia calculations at the same centre-of-mass energy. Using the p[subscript T] of the isolated photon as an estimate of the energy of the scattered parton, this measurement allows an unbiased characterization of the in-medium parton energy loss.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.nuclphysa.2013.02.107
