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Coherence effects and broadening in medium-induced QCD radiation off a massive q(q)over-bar antenna

Armesto, Nestor; Ma, Hao; Mehtar-Tani, Yacine; Salgado, Carlos A. and Tywoniuk, Konrad LU (2012) In Journal of High Energy Physics
Abstract
Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic part on traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calculating the single-gluon coherent spectrum off an antenna consisting of a massive quark-antiquark pair. Interferences dominate the spectrum of soft gluons, which are mainly emitted outside of the cone made by the antenna opening angle, while the antenna results in a superposition of independent emitters above a critical gluon energy scale. We study the interplay between the dead-cone effect and medium-induced jet broadening in... (More)
Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic part on traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calculating the single-gluon coherent spectrum off an antenna consisting of a massive quark-antiquark pair. Interferences dominate the spectrum of soft gluons, which are mainly emitted outside of the cone made by the antenna opening angle, while the antenna results in a superposition of independent emitters above a critical gluon energy scale. We study the interplay between the dead-cone effect and medium-induced jet broadening in both cases of soft and hard gluons and present results on energy loss distributions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
QCD Phenomenology
in
Journal of High Energy Physics
issue
1
publisher
Springer
external identifiers
  • wos:000300183300026
  • scopus:84857260537
ISSN
1126-6708
DOI
10.1007/JHEP01(2012)109
language
English
LU publication?
yes
id
0a59b354-c37e-4a49-b2a9-a1f3e807de4a (old id 2516902)
date added to LUP
2012-05-09 13:25:12
date last changed
2017-01-01 03:40:36
@article{0a59b354-c37e-4a49-b2a9-a1f3e807de4a,
  abstract     = {Studies of medium-induced QCD radiation usually rely on the calculation of single-gluon radiation spectrum off an energetic part on traversing an extended colored medium. Recently, the importance of interference effects between emitters in the medium has been explored. In this work we extend previous studies by calculating the single-gluon coherent spectrum off an antenna consisting of a massive quark-antiquark pair. Interferences dominate the spectrum of soft gluons, which are mainly emitted outside of the cone made by the antenna opening angle, while the antenna results in a superposition of independent emitters above a critical gluon energy scale. We study the interplay between the dead-cone effect and medium-induced jet broadening in both cases of soft and hard gluons and present results on energy loss distributions.},
  author       = {Armesto, Nestor and Ma, Hao and Mehtar-Tani, Yacine and Salgado, Carlos A. and Tywoniuk, Konrad},
  issn         = {1126-6708},
  keyword      = {QCD Phenomenology},
  language     = {eng},
  number       = {1},
  publisher    = {Springer},
  series       = {Journal of High Energy Physics},
  title        = {Coherence effects and broadening in medium-induced QCD radiation off a massive q(q)over-bar antenna},
  url          = {http://dx.doi.org/10.1007/JHEP01(2012)109},
  year         = {2012},
}