Gluon recombination in high parton density QCD: inclusive pion production

Abstract

We argue that the collinear factorization of the fragmentation functions in high energy hadron and nuclei collisions breaks down at transverse momenta kT < Qs/g due to high parton densities in the colliding hadrons and/or nuclei. We calculate, at next-to-leading order in projectile parton density and to all orders in target parton density, the double-inclusive cross section for production of a pair of gluons in the scalar J^(PC)=0^(++) channel. Using the low energy theorems of QCD we find the inclusive cross section for pi-meson production.

24 pages, 5 figures

References in corpus (1)

• High energy pA collisions in the Color Glass Condensate approach

Cited by in corpus (5)

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• Spectrum of diffractively produced gluons in onium-nucleus collisions
• Gluon multiplicity in coherent diffraction of onium on a heavy nucleus
• Baryon enhancement in high-density QCD and relativistic heavy ion collisions