Effects of custodial symmetry breaking in the Georgi-Machacek model at high energies
Effects of custodial symmetry breaking in the Georgi-Machacek model at high energies
The model proposed by Georgi and Machacek enables the Higgs sector to involve isospin triplet scalar fields while retaining a custodial $SU(2{)}_{V}$ symmetry in the potential and, thus, ensuring the electroweak $\ensuremath{\rho}$ parameter to be one at tree level. This custodial symmetry, however, is explicitly broken by loop effects of …