Singlet channel scattering in a composite Higgs model on the lattice

Authors

Fernando Romero-López, Universitat de Val ncia-CSIC
Vincent Drach, School of Engineering, Computing and Mathematics
Patrick Fritzsch, Trinity College Dublin
Antonio Rago, School of Engineering, Computing and Mathematics

ORCID

• Vincent Drach: 0000-0001-8948-0220
• Antonio Rago: 0000-0003-1192-5538

Abstract

AbstractWe present the first calculation of the scattering amplitude in the singlet channel beyond QCD. The calculation is performed in SU(2) gauge theory with $$N_f=2$$ N f = 2 fundamental Dirac fermions and based on a finite-volume scattering formalism. The theory exhibits a $$SU(4) \rightarrow Sp(4)$$ S U ( 4 ) → S p ( 4 ) chiral symmetry breaking pattern that is used to design minimal composite Higgs models currently tested at the LHC. Our results show that, for the range of underlying fermion mass considered, the lowest flavour singlet state is stable.

DOI

10.1140/epjc/s10052-021-09914-y

Publication Date

2022-01-19

Publication Title

The European Physical Journal C

Volume

82

Issue

1

ISSN

1434-6044

Embargo Period

2022-02-10

Recommended Citation

Romero-López, F., Drach, V., Fritzsch, P., & Rago, A. (2022) 'Singlet channel scattering in a composite Higgs model on the lattice', The European Physical Journal C, 82(1). Available at: 10.1140/epjc/s10052-021-09914-y