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Universal features of JIMWLK and BK evolution at small x

In this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a...

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Detalles Bibliográficos
Autores principales: Rummukainen, Kari, Weigert, Heribert
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysa.2004.03.219
http://cds.cern.ch/record/645320
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author Rummukainen, Kari
Weigert, Heribert
author_facet Rummukainen, Kari
Weigert, Heribert
author_sort Rummukainen, Kari
collection CERN
description In this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a rapidity dependent saturation scale Q_s(\tau). Within the set of initial conditions chosen both JIMWLK and BK equations show remarkable agreement. We point out the crucial importance of running coupling corrections to obtain consistency in the UV. Despite the scale breaking induced by the running coupling we find that evolution drives correlators towards an asymptotic form with near scaling properties. We discuss asymptotic features of the evolution, such as the \tau- and A-dependence of Q_s away from the initial condition.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6453202022-07-06T02:23:31Zdoi:10.1016/j.nuclphysa.2004.03.219http://cds.cern.ch/record/645320engRummukainen, KariWeigert, HeribertUniversal features of JIMWLK and BK evolution at small xParticle Physics - PhenomenologyIn this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a rapidity dependent saturation scale Q_s(\tau). Within the set of initial conditions chosen both JIMWLK and BK equations show remarkable agreement. We point out the crucial importance of running coupling corrections to obtain consistency in the UV. Despite the scale breaking induced by the running coupling we find that evolution drives correlators towards an asymptotic form with near scaling properties. We discuss asymptotic features of the evolution, such as the \tau- and A-dependence of Q_s away from the initial condition.In this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a rapidity dependent saturation scale Q_s(\tau). Within the set of initial conditions chosen both JIMWLK and BK equations show remarkable agreement. We point out the crucial importance of running coupling corrections to obtain consistency in the UV. Despite the scale breaking induced by the running coupling we find that evolution drives correlators towards an asymptotic form with near scaling properties. We discuss asymptotic features of the evolution, such as the \tau- and A-dependence of Q_s away from the initial condition.In this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a rapidity dependent saturation scale Q_s(\tau). Within the set of initial conditions chosen both JIMWLK and BK equations show remarkable agreement. We point out the crucial importance of running coupling corrections to obtain consistency in the UV. Despite the scale breaking induced by the running coupling we find that evolution drives correlators towards an asymptotic form with near scaling properties. We discuss asymptotic features of the evolution, such as the \tau- and A-dependence of Q_s away from the initial condition.In this paper we present the results of numerical studies of the JIMWLK and BK equations with a particular emphasis on the universal scaling properties and phase space structure involved. The results are valid for near zero impact parameter in DIS. We demonstrate IR safety due to the occurrence of a rapidity-dependent saturation scale Q s ( τ ). Within the set of initial conditions chosen, both JIMWLK and BK equations show remarkable agreement. We point out the crucial importance of running coupling corrections to obtain consistency in the UV for both equations. Explicit studies of this have been performed with BK. Despite the scale breaking induced by the running coupling we find that evolution drives correlators towards an asymptotic form with near scaling properties. We discuss asymptotic features of the evolution, such as the τ - and A -dependence of Q s away from the initial condition.hep-ph/0309306CERN-TH-2003-230CERN-TH-2003-230oai:cds.cern.ch:6453202003-09-26
spellingShingle Particle Physics - Phenomenology
Rummukainen, Kari
Weigert, Heribert
Universal features of JIMWLK and BK evolution at small x
title Universal features of JIMWLK and BK evolution at small x
title_full Universal features of JIMWLK and BK evolution at small x
title_fullStr Universal features of JIMWLK and BK evolution at small x
title_full_unstemmed Universal features of JIMWLK and BK evolution at small x
title_short Universal features of JIMWLK and BK evolution at small x
title_sort universal features of jimwlk and bk evolution at small x
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.nuclphysa.2004.03.219
http://cds.cern.ch/record/645320
work_keys_str_mv AT rummukainenkari universalfeaturesofjimwlkandbkevolutionatsmallx
AT weigertheribert universalfeaturesofjimwlkandbkevolutionatsmallx