Extending the Standard Model by heavy scalar triplets usually creates a conflict with Z pole measurements. The Georgi-Machacek model avoids this in an elegant way, providing thus a natural explanation for neutrino masses. LHC results yield strong constraints on the Georgi-Machaceck scalars, but a complete analysis to all of these recent bounds was missing. I present a global fit of this model which combines Higgs signal strengths and direct LHC searches for scalar resonances with theoretical constraints, obtained with the open-source fitting package HEPfit.
LHCPHENO