# XIIIth Quark Confinement and the Hadron Spectrum

31 July 2018 to 6 August 2018
Maynooth University
Europe/Dublin timezone

## Dual QCD and Kaon Flavour Physics

6 Aug 2018, 09:30
30m
JH1 (Maynooth University)

### JH1

#### Maynooth University

Invited plenary talk

### Speaker

Prof. Andrzej Buras (TUM-IAS)

### Description

After recalling the basis of the Dual QCD (DQCD) and its past successes in Kaon flavour physics within the Standard Model, I will present 2018 results that include the calculation of hadronic matrix elements of four-quark operators for $K^0-\bar K^0$ mixing and $K\to\pi\pi$ decays in arbitrary extension of the Standard Model.
The results for $K^0-\bar K^0$ mixing allow an insight into those from Lattice QCD and imply that the so-called meson evolution in DQCD is crucial for the understanding of lattice data. As no lattice QCD calculations of the hadronic matrix elements of 13 BSM four-quark operators contributing to $K\to\pi\pi$ are available we present the first to date calculation of these matrix elements in DQCD. Implications of these results for the ratio $\epsilon^\prime/\epsilon$ and its correlation with other Kaon observables are briefly discussed.

### Primary author

Prof. Andrzej Buras (TUM-IAS)