# LHC constraints on large scalar multiplet models with a Z$_2$ symmetry

@article{Logan2015LHCCO,
title={LHC constraints on large scalar multiplet models with a Z\$_2\$ symmetry},
author={H. Logan and T. Martin and Terry Pilkington},
journal={Physical Review D},
year={2015},
volume={92},
pages={055028}
}
• Published 2015
• Physics
• Physical Review D
• We study the LHC search constraints on models that extend the Standard Model (SM) with an inert, complex scalar electroweak multiplet, $\Sigma$, with isospin T=5/2 (sextet) or T=7/2 (octet) and identical hypercharge to the SM Higgs doublet. Imposing a global $Z_2$ symmetry under which $\Sigma \to -\Sigma$, the lightest member of $\Sigma$ is stable and we require that it be neutral ($\zeta^{0,r}$) to avoid cosmological constraints from charged relics. Pair production of scalars by electroweak… CONTINUE READING