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Title: On the evolution of jet energy and opening angle in strongly coupled plasma

Abstract

We calculate how the energy and the opening angle of jets in N = 4SYM theory evolve as they propagate through the strongly coupled plasma of that theory. We define the rate of energy loss dEjet/dx and the jet opening angle in a straightforward fashion directly in the gauge theory before calculating both holographically, in the dual gravitational description. In this way, we rederive the previously known result for dEjet/dx without the need to introduce a finite slab of plasma. We obtain a striking relationship between the initial opening angle of the jet, which is to say the opening angle that it would have had if it had found itself in vacuum instead of in plasma, and the thermalization distance of the jet. Via this relationship, we show that N = 4SYM jets with any initial energy that have the same initial opening angle and the same trajectory through the plasma experience the same fractional energy loss. We also provide an expansion that describes how the opening angle of the N = 4SYM jets increases slowly as they lose energy, over the fraction of their lifetime when their fractional energy loss is not yet large. In conclusion, we close bymore » looking ahead toward potential qualitative lessons from our results for QCD jets produced in heavy collisions and propagating through quark-gluon plasma.« less

Authors:
 [1];  [2]
  1. Harvard Univ., Cambridge, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1326958
Grant/Contract Number:  
SC0011090
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; gauge-gravity correspondence; holography and quark-gluon plasmas

Citation Formats

Chesler, Paul M., and Rajagopal, Krishna. On the evolution of jet energy and opening angle in strongly coupled plasma. United States: N. p., 2016. Web. https://doi.org/10.1007/JHEP05(2016)098.
Chesler, Paul M., & Rajagopal, Krishna. On the evolution of jet energy and opening angle in strongly coupled plasma. United States. https://doi.org/10.1007/JHEP05(2016)098
Chesler, Paul M., and Rajagopal, Krishna. Tue . "On the evolution of jet energy and opening angle in strongly coupled plasma". United States. https://doi.org/10.1007/JHEP05(2016)098. https://www.osti.gov/servlets/purl/1326958.
@article{osti_1326958,
title = {On the evolution of jet energy and opening angle in strongly coupled plasma},
author = {Chesler, Paul M. and Rajagopal, Krishna},
abstractNote = {We calculate how the energy and the opening angle of jets in N = 4SYM theory evolve as they propagate through the strongly coupled plasma of that theory. We define the rate of energy loss dEjet/dx and the jet opening angle in a straightforward fashion directly in the gauge theory before calculating both holographically, in the dual gravitational description. In this way, we rederive the previously known result for dEjet/dx without the need to introduce a finite slab of plasma. We obtain a striking relationship between the initial opening angle of the jet, which is to say the opening angle that it would have had if it had found itself in vacuum instead of in plasma, and the thermalization distance of the jet. Via this relationship, we show that N = 4SYM jets with any initial energy that have the same initial opening angle and the same trajectory through the plasma experience the same fractional energy loss. We also provide an expansion that describes how the opening angle of the N = 4SYM jets increases slowly as they lose energy, over the fraction of their lifetime when their fractional energy loss is not yet large. In conclusion, we close by looking ahead toward potential qualitative lessons from our results for QCD jets produced in heavy collisions and propagating through quark-gluon plasma.},
doi = {10.1007/JHEP05(2016)098},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2016,
place = {United States},
year = {2016},
month = {5}
}

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Cited by: 4 works
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    Works referencing / citing this record:

    Angular structure of jet quenching within a hybrid strong/weak coupling model
    journal, March 2017

    • Casalderrey-Solana, Jorge; Gulhan, Doga Can; Milhano, José Guilherme
    • Journal of High Energy Physics, Vol. 2017, Issue 3
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    Resolution effects in the hybrid strong/weak coupling model
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    • Hulcher, Zachary; Pablos, Daniel; Rajagopal, Krishna
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