Antonio Braz de Pádua

The search of asymptopia in soft physics at high energy

Abstract We show, with a simple, conventional, soft physics model with Reggeon+Pomeron terms, that, without odderon or/and minijet QCD contributions, existing data on total cross sections, ϱ parameter and elastic scattering are well understood in the energy region from √s⋍5 GeV up to cosmic rays, √s⋍20 TeV .

Universality tests for total cross sections

Starting directly from data we test the universality of the decomposition of total cross-sections in an asymptotically dominant term, the Pomeron, and a non dominant one, the Reggeon. Without assuming Regge pole model behaviour or additive quark model relations we show that data are compatible with both models. Support is not found for models predicting asymptotical equality of total cross-sections.