Recent developments in nonleptonic kaon decays

TL;DR

This paper reviews recent theoretical progress in nonleptonic kaon decays, focusing on psilon_K determination, lattice QCD efforts for (K \u03c0) transitions, and holographic approaches to (K ) decays.

Contribution

It highlights new developments in theoretical calculations and methods addressing key challenges in understanding nonleptonic kaon decays.

Findings

Improved psilon_K determination including perturbative and nonperturbative effects.

Advances in lattice QCD for (K \u03c0) transitions.

Application of holographic methods to (K ) decay puzzles.

Abstract

I review the current status of nonleptonic kaon decays, placing special emphasis on the recent theoretical progress. In particular, I concentrate on 3 points: (i) the improved determination of \epsilon_K, including both perturbative and nonperturbative contributions; (ii) the efforts to tame (K -> 2\pi) transitions in lattice QCD; and (iii) the use of holographic methods to solve the vector meson dominance puzzle in (K -> 3\pi).