Unified QCD evolution equations for quarks and gluons

Details Unified QCD evolution equations for quarks and gluons Unified QCD evolution equations for quarks and gluons

1995-09-14

arxiv.org/abs/hep-ph/9509295v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, latex file, no figures, requires qcdparis.sty; Contribution to the PARIS Workshop DIS 95',April 19-24,1995

Scientific paper

Considering the BFKL and DGLAP QCD evolution equations for structure functions, we discuss the possibility of unifying them in the whole $x$ and $Q^2$ range. We emphasize that the main problem is related to the constraint of angular ordering of the radiation, and the cancellation of the related collinear singularities for inclusive processes. At the leading log\ $1/x$ and log\ $Q^2$ level, we write down a unified system of equations satisfying this cancellation constraint. At low $x$, it leads to a less singular behaviour of the structure functions than the BFKL prediction.

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