Bounds on the Soft Pomeron Intercept

Abstract

The Donnachie-Landshoff fit of total cross sections has now become a standard reference for models of total, elastic and diffractive cross-sections. Adopting their philosophy that simple-pole exchanges should account for all data to present energies, we assess the uncertainties on their fits. Our best estimate for the pomeron intercept is $1.096_{-0.009}^{+0.012}$, but several models have a good chi square for intercepts in the range [1.07,1.11].

15 pages, LaTeX, 8 postscript figures embedded using psfig.sty, postscript version available at http://nuclth02.phys.ulg.ac.be/DATA.html Although our conclusions remain largely unaffected, this new version provides a much more careful statistical analysis of the data, a better determination of the uncertainties, and suggests a model-independent way to remove erroneous data points. We also include an analysis of pion-proton data, and a comparison of our results with other estimates

References in corpus (2)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Total cross sections

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