# Rencontre de Physique des Particules 2015

15-16 janvier 2015
Institut Henri Poincaré
Fuseau horaire Europe/Paris

## Kaon phenomenology, Delta I=1/2 rule and BSM kaon oscillations

15 janv. 2015 à 15:18
14m
Chair: Emi Kou, Amphi Hermite (Institut Henri Poincaré)

### Chair: Emi Kou, Amphi Hermite

#### Institut Henri Poincaré

11, rue Pierre et Marie Curie 75005 Paris

### Orateur

Dr Nicolas Garron (University of Cambridge)

### Description

Kaon physics provides us with highly-non trivial tests of the Standard Model and is a rich source of information for Beyond the Standard Model (BSM) phenomenology. CP violation is among the most intriguing phenomena in particle physics and is very well measured in kaon decays, but a complete and quantitative theoretical prediction is still missing. However, the RBC-UKQCD collaborations have made tremendous progress in the last few years toward the computation of the $K\to \pi\pi$ amplitudes. I will present our work, including our new data points with physical quark masses. From our results, I will show a possible explanation of the $\Delta I = 1/2$ rule. Finally, I will present our work on neutral kaon mixing, including the BSM contribution and the constraints it implies on the scale of new-physics.

### Summary

I report on our computation of $K\to\pi\pi$ amplitudes, including new points with physical quark masses, and on $K-\bar K$ oscillations within and beyond the standard model. I also show a possible explanation of the $\Delta I=1/2$ rule.

### Auteur principal

Dr Nicolas Garron (University of Cambridge)

### Documents de présentation

 Transparents
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