https://doi.org/10.1140/epjc/s10052-021-09914-y
Regular Article - Theoretical Physics
Singlet channel scattering in a composite Higgs model on the lattice
1
Centre for Mathematical Sciences, University of Plymouth, PL4 8AA, Plymouth, UK
2
School of Mathematics, Trinity College Dublin, Dublin 2, Ireland
3
IFIC (CSIC-UVEG), 46980, Paterna, Spain
4
CERN, Theoretical Physics Department, 1211, Geneva 23, Switzerland
Received:
30
July
2021
Accepted:
6
December
2021
Published online:
19
January
2022
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 
fundamental Dirac fermions and based on a finite-volume scattering formalism. The theory exhibits a 
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.
© The Author(s) 2022
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