Determination of the chiral pion-pion scattering parameters: a proposal

Details Determination of the chiral pion-pion scattering parameters: a proposal Determination of the chiral pion-pion scattering parameters: a proposal

1996-05-30

arxiv.org/abs/hep-ph/9605436v1

Helv.Phys.Acta 70 (1997) 287-301

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages plain latex, 2 figures, uuencoded, tarred and compressed

Scientific paper

An explicitly crossing-symmetric decomposition of the pion-pion scattering amplitudes into low- and high-energy components is established. The high-energy components are entirely determined by absorptive parts at high energies. With the exception of the two leading-order parameters, all the parameters appearing in the one- and two-loop chiral amplitudes are determined by the high-energy components of the exact amplitudes.

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