Update on SU(2) gauge theory with NF = 2 fundamental flavours

TL;DR

This paper provides an updated non-perturbative analysis of SU(2) gauge theory with two fundamental flavors, focusing on meson spectrum and decay constants, relevant for composite Higgs models.

Contribution

It offers new results with improved statistics and lighter pion masses, enhancing the reliability of the chiral extrapolation for this minimal strong dynamics model.

Findings

Updated meson spectrum and decay constants

More reliable chiral extrapolation

Inclusion of lighter pion mass ensembles

Abstract

We present a non perturbative study of SU(2) gauge theory with two fundamental Dirac flavours. This theory provides a minimal template which is ideal for a wide class of Standard Model extensions featuring novel strong dynamics, such as a minimal realization of composite Higgs models. We present an update on the status of the meson spectrum and decay constants based on increased statistics on our existing ensembles and the inclusion of new ensembles with lighter pion masses, resulting in a more reliable chiral extrapolation.