Some continuum physics results from the lattice V-A correlator

TL;DR

This paper analyzes lattice QCD data for the V-A correlator to extract low-energy constants and decay constants of excited pseudoscalar states, comparing results with experimental data to improve understanding of continuum physics.

Contribution

It provides novel lattice-based determinations of chiral LECs L_10 and C_87 and decay constants for pi(1300) and pi(1800), with comparison to continuum experimental results.

Findings

Determined values for L_10 and C_87 from lattice data.

Estimated decay constants for pi(1300) and pi(1800).

Compared lattice results with experimental tau decay data.

Abstract

We present preliminary results on extractions of the chiral LECs L_10 and C_87 and constraints on the excited pseudoscalar state pi(1300) and pi(1800) decay constants obtained from an analysis of lattice data for the flavor ud light quark V-A correlator. A comparison of the results for the correlator to the corresponding mildly-model-dependent continuum results (based primarily on experimental hadronic tau decay data) is also given