$K_{l4}$ at two-loops and CHPT predictions for $ππ$-scattering

Details $K_{l4}$ at two-loops and CHPT predictions for $ππ$-scattering $K_{l4}$ at two-loops and CHPT predictions for $ππ$-scattering

2000-11-02

arxiv.org/abs/hep-ph/0011023v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at Chiral Dynamics 2000, Jefferson Lab, Newport News, Virginia, USA, July 17-22, 2000, 2p

Scientific paper

We present the results from our two-loop calculations of masses,
decay-constants, vacuum-expectation-values and the $K_{\ell4}$ form-factors in
three-flavour Chiral Perturbation Theory (CHPT). We use this to fit the $L_i^r$
to two-loops and discuss the ensuing predictions for $\pi\pi$-threshold
parameters.

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