Extended Geometric Scaling from Generalized Traveling Waves

Details Extended Geometric Scaling from Generalized Traveling Waves Extended Geometric Scaling from Generalized Traveling Waves

2009-12-09

arxiv.org/abs/0912.1762v2

Phys.Rev.D81:054014,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, no figure, misprints corrected and reference added

Scientific paper

10.1103/PhysRevD.81.054014

We define a mapping of the QCD Balitsky-Kovchegov equation in the diffusive approximation with noise and a generalized coupling allowing a common treatment of the fixed and running QCD couplings. It corresponds to the extension of the stochastic Fisher and Kolmogorov-Petrovsky-Piscounov equation to the radial wave propagation in a medium with negative-gradient absorption responsible for anomalous diffusion,non-integer dimension and damped noise fluctuations. We obtain its analytic traveling wave solutions with a new scaling curve and in particular for running coupling a new scaling variable allowing to extend the range and validity of the geometric-scaling QCD prediction beyond the previously known domain.

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