Regular Article - Theoretical Physics

The European Physical Journal C

, Volume 57, Issue 3, pp 541-556

First online:

The K 3 scalar form factors in the standard model

  • A. KastnerAffiliated withFakultät für Physik, Universität Wien
  • , H. NeufeldAffiliated withFakultät für Physik, Universität Wien Email author 

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We discuss the predictions of the standard model for the scalar form factors of K 3 decays. Our analysis is based on the results of chiral perturbation theory, large N c estimates of low-energy couplings and dispersive methods. It includes a discussion of isospin-violating effects of strong and electromagnetic origin.