Analytic Amplitude Models for Forward Scattering

Details Analytic Amplitude Models for Forward Scattering Analytic Amplitude Models for Forward Scattering

2001-11-28

arxiv.org/abs/hep-ph/0111360v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, COMPETE Collaboration, talk presented at the 9th International Conference (Blois Workshop) on Elastic and Diffractiv

Scientific paper

We report on fits of a large class of analytic amplitude models for forward scattering against the comprehensive data for all available reactions. To differentiate the goodness of the fits of many possible parametrizations to a large sample of data, we developed and used a set of quantitative indicators measuring statistical quality of the fits over and beyond the typical criterion of the $\Chi^2 /dof$. These indicators favor models with a universal $ log^2 s$ Pomeron term, which enables one to extend the fit down to $\sqrt s = 4$ GeV.

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