7 papers
sum rules and the SU(3) chiral expansion
B. Ananthanarayan, P. Büttiker, B. Moussallam
A recently proposed set of sum rules, based on the pion-Kaon scattering amplitudes and their crossing-symmetric conjugates are analysed in detail. A key role is played by the …
Comparison of Pion-Kaon Scattering in SU(3) Chiral Perturbation Theory and Dispersion Relations
B. Ananthanarayan, P. Büttiker
We establish the framework for the comparison of scattering amplitudes from SU(3) chiral perturbation theory with suitable dispersive representations which result from the com…
Pion-nucleon scattering inside the Mandelstam triangle
Paul Büttiker, Ulf-G. Meißner
We study the third order pion-nucleon scattering amplitude obtained from heavy baryon chiral perturbation theory inside the Mandelstam triangle. We reconstruct the pion-nucleon amp…
Working group on and N interactions - Summary
Ulf-G. Meißner, Martin Sevior, A. Badertscher +16
This is the summary of the working group on and N interactions of the Chiral Dynamics Workshop in Mainz, September 1-5, 1997. Each talk is represented by an extended one pa…
Higher Threshold Parameters in pi pi Scattering
B. Ananthanarayan, P. Buttiker
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 rule…
Scattering Lengths and Medium and High Energy Scattering
B. Ananthanarayan, P. Büttiker
Medium and high energy absorptive parts contribute to dispersive expressions for D- wave scattering lengths, and . For the model employed by Basdevant, Frogatt and P…