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arXiv · hep-ph/0011023

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

Gabriel Amoros·Johan Bijnens·Pere Talavera
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Abstract

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 $ππ$-threshold parameters.

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Gabriel Amoros, Johan Bijnens, Pere Talavera. 2000-11-02. $K_{l4}$ at two-loops and CHPT predictions for $ππ$-scattering. https://doi.org/10.1142/9789812810977_0029

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