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The lambda-measure and the generalised dipoles in the Lund model

Andersson, Bo LU ; Mohanty, Sandipan LU and Söderberg, Fredrik LU (2002) In Nuclear Physics, Section B 646(1-2). p.102-126
Abstract
We demonstrate that the multiple gluon emission phase space in the dipole cascade model has a strong linear correlation with the number of gluons emitted. The number of gluons per unit available phase space at a certain resolution scale is found to be remarkably independent of the cms energy and global event properties like thrust, and even changes in the ordering variable or resolution scale. We show that the distribution of sizes of gluon-gluon dipoles in a parton cascade has stability properties which are sufficient to account for those of the phase space variable. We observe that certain more abstract entities, defined in the context of hadronisation and related to the gluon emission phase space, share those properties of colour... (More)
We demonstrate that the multiple gluon emission phase space in the dipole cascade model has a strong linear correlation with the number of gluons emitted. The number of gluons per unit available phase space at a certain resolution scale is found to be remarkably independent of the cms energy and global event properties like thrust, and even changes in the ordering variable or resolution scale. We show that the distribution of sizes of gluon-gluon dipoles in a parton cascade has stability properties which are sufficient to account for those of the phase space variable. We observe that certain more abstract entities, defined in the context of hadronisation and related to the gluon emission phase space, share those properties of colour dipoles and name them generalised dipoles. We also present an analytical model to qualitatively describe our findings. (C) 2002 Elsevier Science B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lund model, dipole cascade model, lambda-measure, l-measure, generalised dipole, QCD
in
Nuclear Physics, Section B
volume
646
issue
1-2
pages
102 - 126
publisher
Elsevier
external identifiers
  • wos:000179552700005
ISSN
0550-3213
DOI
10.1016/S0550-3213(02)00897-0
language
English
LU publication?
yes
id
2275f541-3523-4ea7-bd41-b1f15e9748ae (old id 322175)
date added to LUP
2007-08-07 08:34:48
date last changed
2016-04-16 03:50:56
@article{2275f541-3523-4ea7-bd41-b1f15e9748ae,
  abstract     = {We demonstrate that the multiple gluon emission phase space in the dipole cascade model has a strong linear correlation with the number of gluons emitted. The number of gluons per unit available phase space at a certain resolution scale is found to be remarkably independent of the cms energy and global event properties like thrust, and even changes in the ordering variable or resolution scale. We show that the distribution of sizes of gluon-gluon dipoles in a parton cascade has stability properties which are sufficient to account for those of the phase space variable. We observe that certain more abstract entities, defined in the context of hadronisation and related to the gluon emission phase space, share those properties of colour dipoles and name them generalised dipoles. We also present an analytical model to qualitatively describe our findings. (C) 2002 Elsevier Science B.V. All rights reserved.},
  author       = {Andersson, Bo and Mohanty, Sandipan and Söderberg, Fredrik},
  issn         = {0550-3213},
  keyword      = {Lund model,dipole cascade model,lambda-measure,l-measure,generalised dipole,QCD},
  language     = {eng},
  number       = {1-2},
  pages        = {102--126},
  publisher    = {Elsevier},
  series       = {Nuclear Physics, Section B},
  title        = {The lambda-measure and the generalised dipoles in the Lund model},
  url          = {http://dx.doi.org/10.1016/S0550-3213(02)00897-0},
  volume       = {646},
  year         = {2002},
}