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arXiv · hep-ph/0207216

Pion-pion scattering above resonances

A. Szczurek
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Abstract

We model large angle intermediate energy pion-pion scattering by the pQCD two-gluon (2g) exchange contribution and discuss the onset of the dominance of the Glauber-Gribov-Landshoff (GGL) component. The pQCD 2g exchange contribution becomes substantial already at $|t|\sim$ 1 GeV^{2}, but the pQCD exchange dominance is deferred to $|t|\sim$ 3 GeV^{2} because of competing multiple soft rescattering effects. Based on the NN and $πN$ total cross section data and Regge factorization, we evaluate the dominant soft contribution to the $ππ$ total cross section and find the results consistent with the ones deduced earlier from the absorption model analysis of the $πN \to X N, X Δ$ data.

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A. Szczurek. 2002-07-18. Pion-pion scattering above resonances. https://doi.org/10.1142/9789812791351_0049

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