PT Journal
AU Drach, V
   Fritzsch, P
   Rago, A
   Romero-Lopez, F
TI Singlet channel scattering in a composite Higgs model on the lattice
SO European Physical Journal C
JI Eur. Phys. J. C
PY 2022
BP 47 - 10pp
VL 82
IS 1
DI 10.1140/epjc/s10052-021-09914-y
LA English
AB 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) -> 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.
ER