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Deducing the string-breaking distance from corrections to Watson-s theorem in strong production processes

Authors: E. van Beveren and G. Rupp

Ref.: arXiv:0712.1771 [hep-ph], 1-7 (2007)

Abstract: We show that the string-breaking distance can be read from meson-production data, by allowing a simple variation on the Watson theorem. Accordingly, we find that the radii of 0.67, 0.34 and 0.20 fm for the creation of non-strange q-qbar pairs obtained in the Resonance-Spectrum-Expansion model, for light-quark, c-cbar, and b-bbar environments, respectively, are in perfect agreement with S-wave di-pion production data, upon employing an ansatz with no additional free parameters.

URL: arxiv.org