Study of jet quenching using [gamma]-jet events in heavy ion collisions at 2.76TeV
Name
865576592-MIT.pdf
Description
Full printable version
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19.69 MB
Format
Adobe PDF
Checksum (MD5)
f9ed740d74df4af4797f44d856d82d8a
Author(s)
Kim, Yongsun, Ph. D. Massachusetts Institute of Technology
Advisor(s)
Wit Busza.
Date Issued
2013
Publisher
Massachusetts Institute of Technology
Abstract
The kinematic correlations of isolated-[gamma]+jet scatterings in proton-proton and lead-lead collisions at centre-of-mass energy of 2.76TeV per nucleon pair are studied for the investigation of the jet quenching phenomena in hot and dense QCD medium. The analysis uses collision data delivered by the LHC and recorded by CMS detector at CERN. The angular correlation, the transverse momentum ratio and the rate of mono-photon events are measured and their dependence on the collisional impact parameter is examined in lead-lead collision. The results of proton-proton collisions are used as the reference to which the lead-lead results are compared. Significant energy loss of jets induced by the hot and dense medium, and its gradual rise in correlation to the size of the medium are observed in lead-lead collisions, while a modification of the direction of jet axis is not detected.
Description
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2013.
In title on title-page, "[gamma]" appears as the lower case Greek letter. Cataloged from PDF version of thesis.
Includes bibliographical references (pages 149-156).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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