Lattice results reveal unitarity in the CKM matrix and flavour relations in iso-symmetric QCD, suggesting implications for particle physics.
We present lattice results for fK/fπ f K / f π in the iso-symmetric limit of pure QCD (isoQCD) with Nf=2+1 N f = 2 + 1 flavours, along with a determination of |Vᵤₛ|/|Vud| | V us | / | V ud | and a study on the unitarity of the first row of the Cabibbo–Kobayashi–Maskawa (CKM) matrix after introducing strong isospin-breaking and QED effects. The results obtained are based on a combination of a Wilson unitary action and the mixed-action setup introduced in Bussone et al. (Hadronic physics from a Wilson fermion mixed-action approach: setup and scale setting. http://arxiv.org/abs/2510.20450 ; Eur Phys J C 84:506, 2024. http://arxiv.org/abs/2309.14154 ). The combination of the two regularisations enables a more precise control over the continuum-limit extrapolation.
No takes yet. Share an insight, caveat, or question.
Conigli et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: