Eur. Phys. J. C (2009) 64: 273-282
https://doi.org/10.1140/epjc/s10052-009-1145-5

Regular Article - Theoretical Physics

Relations at order p ⁶ in chiral perturbation theory

Department of Theoretical Physics, Lund University, Sölvegatan 14A, 223-62, Lund, Sweden

^* e-mail: bijnens@thep.lu.se

Received: 17 June 2009
Revised: 10 August 2009
Published online: 17 September 2009

Abstract

We report on a search of relations valid at order p ⁶ in Chiral Perturbation Theory. We have found relations between π π, π K scattering, K _ℓ4 decays, masses and decay constants and scalar and vector formfactors. In this paper we give the relations and a first numerical check of them.