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Title: Vacuumlike Jet Fragmentation in a Dense QCD Medium

Abstract

We study the fragmentation of a jet propagating in a dense quark-gluon plasma. Using a leading, double-logarithmic approximation in perturbative QCD, we compute for the first time the effects of the medium on multiple vacuumlike emissions. We show that, due to the scatterings off the plasma, the in-medium parton showers differ from the vacuum ones in two crucial aspects: their phase-space is reduced and the first emission outside the medium can violate angular ordering. As a consequence, we compute the jet fragmentation function and find results in qualitative agreement with LHC measurements.

Authors:
; ; ;
Publication Date:
Research Org.:
Columbia Univ., New York, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1441034
Alternate Identifier(s):
OSTI ID: 1498988
Grant/Contract Number:  
FG02-92ER40699
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 23; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Caucal, P., Iancu, E., Mueller, A. H., and Soyez, G. Vacuumlike Jet Fragmentation in a Dense QCD Medium. United States: N. p., 2018. Web. https://doi.org/10.1103/PhysRevLett.120.232001.
Caucal, P., Iancu, E., Mueller, A. H., & Soyez, G. Vacuumlike Jet Fragmentation in a Dense QCD Medium. United States. https://doi.org/10.1103/PhysRevLett.120.232001
Caucal, P., Iancu, E., Mueller, A. H., and Soyez, G. Wed . "Vacuumlike Jet Fragmentation in a Dense QCD Medium". United States. https://doi.org/10.1103/PhysRevLett.120.232001.
@article{osti_1441034,
title = {Vacuumlike Jet Fragmentation in a Dense QCD Medium},
author = {Caucal, P. and Iancu, E. and Mueller, A. H. and Soyez, G.},
abstractNote = {We study the fragmentation of a jet propagating in a dense quark-gluon plasma. Using a leading, double-logarithmic approximation in perturbative QCD, we compute for the first time the effects of the medium on multiple vacuumlike emissions. We show that, due to the scatterings off the plasma, the in-medium parton showers differ from the vacuum ones in two crucial aspects: their phase-space is reduced and the first emission outside the medium can violate angular ordering. As a consequence, we compute the jet fragmentation function and find results in qualitative agreement with LHC measurements.},
doi = {10.1103/PhysRevLett.120.232001},
journal = {Physical Review Letters},
number = 23,
volume = 120,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.120.232001

Citation Metrics:
Cited by: 5 works
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Figures / Tables:

Figure 1 Figure 1: Schematic representation of the phase space available for VLEs, including an example of a cascade with “1” the last emission inside the medium and “2” the first emission outside.

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