The Two-Component Non-Perturbative Pomeron and the G-Universality

Details The Two-Component Non-Perturbative Pomeron and the G-Universality The Two-Component Non-Perturbative Pomeron and the G-Universality

2000-10-25

arxiv.org/abs/hep-ph/0010292v1

Nucl.Phys.Proc.Suppl. 99A (2001) 47-49

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 tables, talk at the International Workshop on Diffraction in High-Energy Physics "Diffraction 2000", Cetraro, Italy

Scientific paper

10.1016/S0920-5632(01)01304-4

In this communication we present a generalization of the Donnachie-Landshoff model inspired by the recent discovery of a 2-component Pomeron in LLA-QCD by Bartels, Lipatov and Vacca. In particular, we explore a new property, not present in the usual Regge theory - the G-Universality - which signifies the independence of one of the Pomeron components on the nature of the initial and final hadrons. The best description of all the forward hadron-hadron, gamma- gamma and gamma-proton data is obtained when G-universailty is imposed. Moreover, the maximal (ln)**2 behaviour of the hadron amplitude, first established by Heisenberg, is clearly favoured by the data.

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