3 papers
hep-ph2018
Custodial symmetry violation in the Georgi-Machacek model
Ben Keeshan, Heather E. Logan, Terry Pilkington
We study the effects of custodial symmetry violation in the Georgi-Machacek (GM) model. The GM model adds isospin-triplet scalars to the Standard Model in a way that preserves cust…
hep-ph2017
Dark matter in the Georgi-Machacek model with an additional inert doublet
Terry Pilkington
We study a model that extends the Georgi-Machacek model by the addition of an inert doublet, . This allows for the model to contain a natural dark matter candidate, . For…
hep-ph2016
Large scalar multiplet dark matter in the high-mass region
Heather E. Logan, Terry Pilkington
We study two models of scalar dark matter from "large" electroweak multiplets with isospin 5/2 (n=6 members) and 7/2 (n=8), whose scalar potentials preserve a symmetry. Becau…