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New picture of jet quenching dictated by color coherence

Casalderrey-Solana, Jorge ; Mehtar-Tani, Yacine ; Salgado, Carlos A. and Tywoniuk, Konrad LU (2013) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 725(4-5). p.357-360
Abstract
We propose a new description of the jet quenching phenomenon observed in nuclear collisions at high energies in which coherent parton branching plays a central role. This picture is based on the appearance of a dynamically generated scale, the jet resolution scale, which controls the transverse resolution power of the medium to simultaneously propagating color probes. Since from the point of view of the medium all partonic jet fragments within this transverse distance act coherently as a single emitter, this scale allows us to rearrange the jet shower into effective emitters. We observe that in the kinematic regime of the LHC, the corresponding characteristic angle is comparable to the typical opening angle of high-energy jets such that... (More)
We propose a new description of the jet quenching phenomenon observed in nuclear collisions at high energies in which coherent parton branching plays a central role. This picture is based on the appearance of a dynamically generated scale, the jet resolution scale, which controls the transverse resolution power of the medium to simultaneously propagating color probes. Since from the point of view of the medium all partonic jet fragments within this transverse distance act coherently as a single emitter, this scale allows us to rearrange the jet shower into effective emitters. We observe that in the kinematic regime of the LHC, the corresponding characteristic angle is comparable to the typical opening angle of high-energy jets such that most of the jet energy is contained within a non-resolvable color coherent inner core. Thus, a sizable fraction of the jets is unresolved, losing energy as a single patron without modifications of their intra-jet structure. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Jet physics, Jet quenching, Heavy-ion collisions
in
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
725
issue
4-5
pages
357 - 360
publisher
Elsevier
external identifiers
  • wos:000324223100025
  • scopus:84883051838
ISSN
0370-2693
DOI
10.1016/j.physletb.2013.07.046
language
English
LU publication?
yes
id
a9067ce6-9b2b-4450-be15-885c47bc58ab (old id 4098905)
date added to LUP
2016-04-01 13:43:56
date last changed
2020-02-26 03:54:35
@article{a9067ce6-9b2b-4450-be15-885c47bc58ab,
  abstract     = {We propose a new description of the jet quenching phenomenon observed in nuclear collisions at high energies in which coherent parton branching plays a central role. This picture is based on the appearance of a dynamically generated scale, the jet resolution scale, which controls the transverse resolution power of the medium to simultaneously propagating color probes. Since from the point of view of the medium all partonic jet fragments within this transverse distance act coherently as a single emitter, this scale allows us to rearrange the jet shower into effective emitters. We observe that in the kinematic regime of the LHC, the corresponding characteristic angle is comparable to the typical opening angle of high-energy jets such that most of the jet energy is contained within a non-resolvable color coherent inner core. Thus, a sizable fraction of the jets is unresolved, losing energy as a single patron without modifications of their intra-jet structure. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Casalderrey-Solana, Jorge and Mehtar-Tani, Yacine and Salgado, Carlos A. and Tywoniuk, Konrad},
  issn         = {0370-2693},
  language     = {eng},
  number       = {4-5},
  pages        = {357--360},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {New picture of jet quenching dictated by color coherence},
  url          = {http://dx.doi.org/10.1016/j.physletb.2013.07.046},
  doi          = {10.1016/j.physletb.2013.07.046},
  volume       = {725},
  year         = {2013},
}