Status of Chiral Meson Physics

TL;DR

This paper reviews recent advances in Chiral Perturbation Theory for mesons, including low-energy constants, finite volume effects, and extensions to other symmetry breaking patterns, highlighting progress in theoretical calculations.

Contribution

It presents new fits of low-energy constants, discusses finite volume corrections with twisted boundary conditions, and extends calculations to other symmetry breaking patterns.

Findings

Updated low-energy constants fit

Finite volume corrections for form factors analyzed

Leading logarithms calculated at high loop orders

Abstract

This talk includes a short introduction to Chiral Perturbation Theory in the meson sector concentrating on a number of recent developments. I discuss the latest fit of the low-energy constants. Finite volume corrections are discussed for the case with twisted boundary conditions for form-factors and first results at two-loops for three flavours for masses. The last part discusses the extension to other symmetry breaking patterns relevant for technicolour and related theories as well as the calculation of leading logarithms to high loop orders.