We show how to obtain rising hadronic total cross sections in QCD, in the framework of the nonperturbative approach to soft high-energy scattering based on Wilson-loop correlators. Total cross sections turn out to be of "Froissart"-type, i.e., the leading energy dependence is of the form σtot~Blog2s, in agreement with experiments. The observed universality of the prefactor B is obtained rather naturally in this framework. In this case, B is entirely determined by the stable spectrum of QCD, and predicted to be Bth=0.22 mb, in fair agreement with experiments.

Hadronic total cross sections, Wilson loop correlators and the QCD spectrum

MEGGIOLARO, ENRICO
2016-01-01

Abstract

We show how to obtain rising hadronic total cross sections in QCD, in the framework of the nonperturbative approach to soft high-energy scattering based on Wilson-loop correlators. Total cross sections turn out to be of "Froissart"-type, i.e., the leading energy dependence is of the form σtot~Blog2s, in agreement with experiments. The observed universality of the prefactor B is obtained rather naturally in this framework. In this case, B is entirely determined by the stable spectrum of QCD, and predicted to be Bth=0.22 mb, in fair agreement with experiments.
2016
Giordano, Matteo; Meggiolaro, Enrico
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/804982
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