Pomeron loop and running coupling effects in high energy QCD evolution

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dc.creatorDumitru, A.
dc.creatorIancu, E.
dc.creatorPortugal, L.
dc.creatorSoyez, G.
dc.creatorTriantafyllopoulos, D. N.
dc.date2007-06-18
dc.date.accessioned2026-07-07T11:16:57Z
dc.date.available2026-07-07T11:16:57Z
dc.descriptionWithin the framework of a (1+1)-dimensional model which mimics evolution and scattering in QCD at high energy, we study the influence of the running of the coupling on the high-energy dynamics with Pomeron loops. We find that the particle number fluctuations are strongly suppressed by the running of the coupling, by at least one order of magnitude as compared to the case of a fixed coupling, for all the rapidities that we have investigated, up to Y=200. This reflects the slowing down of the evolution by running coupling effects, in particular, the large rapidity evolution which is required for the formation of the saturation front via diffusion. We conclude that, for all energies of interest, processes like deep inelastic scattering or forward particle production can be reliably studied within the framework of a mean-field approximation (like the Balitsky-Kovchegov equation) which includes running coupling effects.
dc.description23 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0706.2540
dc.identifierhttp://arxiv.org/abs/0706.2540
dc.identifierJHEP0708:062,2007
dc.identifierdoi:10.1088/1126-6708/2007/08/062
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192848
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePomeron loop and running coupling effects in high energy QCD evolution
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