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On angular ordering in medium-induced radiation

Tywoniuk, Konrad LU (2011) 4th International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions In Nuclear Physics A 855(1). p.465-468
Abstract
Medium-induced gluon radiation gives rise to the strong energy loss observed in single hadron spectra in heavy ion collisions. Its angular structure, leading e.g. to intra-jet correlations, is only known for the one-gluon inclusive case. In the vacuum, properties such as angular ordering appear when considering less inclusive distributions due to destructive interference effects. We present a calculation which takes into account interference effects in a medium for a setup in which we consider gluon radiation off a quark-antiquark pair with a given opening angle. Surprisingly, computing the spectrum at leading-log accuracy we find that an ordering exists which is exactly opposite from that in the vacuum. We estimate the magnitude of the... (More)
Medium-induced gluon radiation gives rise to the strong energy loss observed in single hadron spectra in heavy ion collisions. Its angular structure, leading e.g. to intra-jet correlations, is only known for the one-gluon inclusive case. In the vacuum, properties such as angular ordering appear when considering less inclusive distributions due to destructive interference effects. We present a calculation which takes into account interference effects in a medium for a setup in which we consider gluon radiation off a quark-antiquark pair with a given opening angle. Surprisingly, computing the spectrum at leading-log accuracy we find that an ordering exists which is exactly opposite from that in the vacuum. We estimate the magnitude of the effect along with a discussion of the implications of such "anti-angular ordering" on jet physics in heavy ion collisions. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
QCD, jet physics, heavy-ion collisions, jet quenching
in
Nuclear Physics A
volume
855
issue
1
pages
465 - 468
publisher
Elsevier
conference name
4th International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions
external identifiers
  • wos:000290196500090
  • scopus:79953309895
ISSN
0375-9474
DOI
10.1016/j.nuclphysa.2011.02.107
language
English
LU publication?
yes
id
56f406a1-8dfa-420b-ad3e-dbb7677245f8 (old id 1987649)
date added to LUP
2011-06-29 09:20:24
date last changed
2017-01-01 06:16:12
@inproceedings{56f406a1-8dfa-420b-ad3e-dbb7677245f8,
  abstract     = {Medium-induced gluon radiation gives rise to the strong energy loss observed in single hadron spectra in heavy ion collisions. Its angular structure, leading e.g. to intra-jet correlations, is only known for the one-gluon inclusive case. In the vacuum, properties such as angular ordering appear when considering less inclusive distributions due to destructive interference effects. We present a calculation which takes into account interference effects in a medium for a setup in which we consider gluon radiation off a quark-antiquark pair with a given opening angle. Surprisingly, computing the spectrum at leading-log accuracy we find that an ordering exists which is exactly opposite from that in the vacuum. We estimate the magnitude of the effect along with a discussion of the implications of such "anti-angular ordering" on jet physics in heavy ion collisions.},
  author       = {Tywoniuk, Konrad},
  booktitle    = {Nuclear Physics A},
  issn         = {0375-9474},
  keyword      = {QCD,jet physics,heavy-ion collisions,jet quenching},
  language     = {eng},
  number       = {1},
  pages        = {465--468},
  publisher    = {Elsevier},
  title        = {On angular ordering in medium-induced radiation},
  url          = {http://dx.doi.org/10.1016/j.nuclphysa.2011.02.107},
  volume       = {855},
  year         = {2011},
}