Travelling waves and impact-parameter correlations

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dc.creatorMunier, S.
dc.creatorSalam, G. P.
dc.creatorSoyez, G.
dc.date2008-07-17
dc.date2008-09-03
dc.date.accessioned2026-07-07T12:27:27Z
dc.date.available2026-07-07T12:27:27Z
dc.descriptionIt is usually assumed that the high-energy evolution of partons in QCD remains local in coordinate space. In particular, fixed impact-parameter scattering is thought to be in the universality class of one-dimensional reaction-diffusion processes as if the evolutions at different points in the transverse plane became uncorrelated through rapidity evolution. We check this assumption by numerically comparing a toy model with QCD-like impact-parameter dependence to its exact counterpart with uniform evolution in impact-parameter space. We find quantitative differences, but which seem to amount to a mere rescaling of the strong coupling constant. Since the rescaling factor does not show any strong alpha_s-dependence, we conclude that locality is well verified, up to subleading terms at small alpha_s.
dc.description13 pages, 11 figures; corrected typos
dc.identifierhttps://arxiv.org/abs/0807.2870
dc.identifierhttp://arxiv.org/abs/0807.2870
dc.identifierPhys.Rev.D78:054009,2008
dc.identifierdoi:10.1103/PhysRevD.78.054009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215214
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTravelling waves and impact-parameter correlations
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