English

2-flavour $SU(2)$ gauge theory with exponential clover Wilson fermions

High Energy Physics - Lattice 2024-01-02 v1

Abstract

Composite Higgs models are a class of models proposed to address the hierarchy and naturalness problems associated with the Standard Model fundamental scalar Higgs. SU(2)SU(2) with two fundamental flavours is a minimal model for the composite Higgs sector which is not yet ruled out by experimental data. We present lattice results for SU(2)SU(2) with two fundamental mass degenerate flavours. For the fermion action we use the new exponential clover Wilson fermion action, which offers O(a)O(a) improvement. We discuss tuning the cSWc_{\mathrm{SW}} parameter through Schr\"{o}dinger functional simulations, the scale setting of the ensembles using the Wilson gauge flow, and the low energy spectroscopy of the theory including the masses of the pseudoscalar isotriplet Goldstone bosons and the vector isotriplet.

Keywords

Cite

@article{arxiv.2401.00589,
  title  = {2-flavour $SU(2)$ gauge theory with exponential clover Wilson fermions},
  author = {Laurence Sebastian Bowes and Vincent Drach and Patrick Fritzsch and Antonio Rago and Fernando Romero-Lopez},
  journal= {arXiv preprint arXiv:2401.00589},
  year   = {2024}
}

Comments

Proceedings of The 40th International Symposium on Lattice Field Theory (Lattice 2023)