Isospin breaking in K -> 3 pi decays I: strong isospin breaking

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Abstract

The CP conserving amplitudes for the decays K --> 3pi are calculated in Chiral Perturbation Theory. The calculation is made at the next-to-leading order including strong and local electromagnetic isospin breaking. A comparison is made between the squared amplitudes with and without isospin violation to estimate the size of the effect. We find corrections of order five percent in the amplitudes.

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  • Subatomic Physics
Original languageEnglish
Pages (from-to)319-342
JournalNuclear Physics, Section B
Volume697
Issue number1-2
Publication statusPublished - 2004
Publication categoryResearch
Peer-reviewedYes