Nonleptonic $K\to 2\,π$ decay dynamics

17 Dec 2020  ·  Hector Gisbert ·

Using Chiral Perturbation Theory to properly account for the dynamics of nonleptonic $K\to 2\,\pi$ decays, we found the Standard Model prediction for the CP violating ratio $\mbox{Re}\left(\varepsilon'/\varepsilon\right)=\left(14\pm 5\right) \times 10^{-4}$, where isospin breaking effects are included, in perfect agreement with the current experimental world average. Similar results have been reported by a recent release of improved lattice data...

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High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice