Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/124035
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Type: Journal article
Title: Comparison of fragmentation functions for jets dominated by light quarks and gluons from pp and Pb + Pb collisions in ATLAS
Other Titles: Comparison of fragmentation functions for jets dominated by light quarks and gluons from pp and Pb plus Pb collisions in ATLAS
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adiguzel, A.
Adye, T.
Affolder, A.
et al.
Citation: Physical Review Letters, 2019; 123(4):042001-1-042001-21
Publisher: American Physical Society
Issue Date: 2019
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
M. Aaboud … D. Duvnjak … P. Jackson … J.L. Oliver … A Petridis … A. Qreshi … A.S. Sharma … M.J. White
Abstract: Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25  pb⁻¹ of pp and 0.49  nb⁻¹ of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb+Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb+Pb events.
Keywords: ATLAS Collaboration
Rights: © 2019 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0030131429
DOI: 10.1103/PhysRevLett.123.042001
Appears in Collections:Physics publications

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