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

High Energy Physics - Phenomenology 2020-12-18 v1 High Energy Physics - Experiment High Energy Physics - Lattice

Abstract

Using Chiral Perturbation Theory to properly account for the dynamics of nonleptonic K2πK\to 2\,\pi decays, we found the Standard Model prediction for the CP violating ratio \mboxRe(ε/ε)=(14±5)×104\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.

Keywords

Cite

@article{arxiv.2012.09483,
  title  = {Nonleptonic $K\to 2\,\pi$ decay dynamics},
  author = {Hector Gisbert},
  journal= {arXiv preprint arXiv:2012.09483},
  year   = {2020}
}

Comments

5 pages. Talk given at 23th International Conference in Quantum Chromodynamics (QCD 20), 27 - 30 October 2020, Montpellier - FR

R2 v1 2026-06-23T21:02:34.612Z