Perturbative QCD of hard and soft processes

Details Perturbative QCD of hard and soft processes Perturbative QCD of hard and soft processes

2009-11-06

arxiv.org/abs/0911.1195v1

Mod.Phys.Lett.A24:2803-2824,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Reproduction of unpublished JINR Report E2-80-521, Dubna 1980. 22 pages 9 figures. To be published in Modern Physics Letters A

Scientific paper

10.1142/S0217732309001029

We discuss some problems concerning the application of perturbative QCD to high energy processes. In particular for hard processes, we analyze higher order and higher twist corrections. It is argued that these effects are of great importance for understanding the behaviour of pion electromagnetic form factor at moderately large momentum transfers. For soft processes, we show that summing the contributions of the lowest twist operators leads to a Regge-like amplitude.

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