Abstract
The present status of the ratio ϵ'/ϵ in the Standard Model (SM) is summarized. In particular we stress the differences between three approaches that attempt to calculate ϵ'/ϵ within the SM: Lattice QCD, Dual QCD and Chiral Perturbation Theory. As presently there is still a significant room left for new physics (NP) contributions, we summarize the present status of the technology that has been recently developed with the goal to analyze ϵ'/ϵ and its correlations with other observables within the Weak Effective Theory (WET) and the Standard Model Effective Field Theory (SMEFT). We also make a few comments on the interpretation of the main dynamics behind the ΔI = 1=2 rule in K → ππ decays.
| Original language | English |
|---|---|
| Article number | 090 |
| Journal | Proceedings of Science |
| Volume | 411 |
| State | Published - 16 Jun 2023 |
| Event | 11th International Workshop on the CKM Unitarity Triangle, CKM 2021 - Virtual, Online, Australia Duration: 22 Nov 2021 → 26 Nov 2021 |