Hadronic Total Cross-sections Through Soft Gluon Summation in Impact Parameter Space

Abstract

The Bloch-Nordsieck model for the parton distribution of hadrons in impact parameter space, constructed using soft gluon summation, is investigated in detail. Its dependence upon the infrared structure of the strong coupling constant ${\alpha }_s$ is discussed, both for finite as well as singular, but integrable, ${\alpha }_s$. The formalism is applied to the prediction of total proton-proton and proton-antiproton cross-sections, where screening, due to soft gluon emission from the initial valence quarks, becomes evident.

20 pages, Latex2e, input FEYNMAN,12 postscipt figures. Submitted to PRD

References in corpus (2)

• Proton-proton Cross Section at sqrt(s) \sim 30 TeV
• Perturbative QCD theory (includes our knowledge of alpha_s)

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