Singlet channel scattering in a Composite Higgs model on the lattice

Abstract

We present the first calculation of the scattering amplitude in the singlet channel beyond QCD. The calculation is performed in $SU(2)$ gauge theory with $N_f=2$ fundamental Dirac fermions and based on a finite-volume scattering formalism. The theory exhibits a $SU(4)\to Sp(4)$ 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.

9 pages, 5 figures, 3 tables. Journal version

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Cited by in corpus (4)

• Lattice studies of the $Sp(4)$ gauge theory with two fundamental and three antisymmetric Dirac fermions
• $Sp(2N)$ Yang-Mills theories on the lattice: scale setting and topology
• Toward minimal composite Higgs models from regular geometries in bottom-up holography
• Composite two-Higgs doublet model from dilaton effective field theory