Higher Threshold Parameters in pi pi Scattering

Details Higher Threshold Parameters in pi pi Scattering Higher Threshold Parameters in pi pi Scattering

1997-07-10

arxiv.org/abs/hep-ph/9707305v1

Phys.Lett.B415:402-410,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, LaTeX

Scientific paper

10.1016/S0370-2693(97)01231-8

A family of threshold parameters which probe the stability of chiral predictions is considered. The relevant criteria for the choice of threshold parameters are discussed. Sum rules for these quantities are derived from dispersion relations and evaluated from effective range formulae. Good agreement with two-loop chiral estimates for many of these quantities is found and interesting discrepancies are discussed.

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