Flavour physics and Lattice QCD: averages of lattice inputs for the Unitarity Triangle Analysis

TL;DR

This paper reviews recent Lattice QCD calculations of hadronic parameters crucial for flavour physics, providing averaged values to support Unitarity Triangle analyses and improve understanding of meson mixing and decays.

Contribution

It compiles and averages recent lattice QCD results for key hadronic parameters used in flavour physics analyses.

Findings

Averages of hadronic parameters for K, D, B meson mixing

Updated decay constants and form factors for B and D mesons

Enhanced precision in Unitarity Triangle analysis

Abstract

We review recent results of Lattice QCD calculations relevant for flavour physics. We discuss in particular the hadronic parameters entering the amplitudes of K0-K0bar, D0-D0bar and B0-B0bar mixing, the B- and D-meson decay constants and the form factors controlling B-meson semileptonic decays. On the basis of these lattice results, which are extensively collected in the paper, we also derive our averages of the relevant hadronic parameters.