Speaker
Cheng-Tse Sam Huang
(National Taiwan University)
Description
The Georgi-Machacek model extends the standard model Higgs sector with one complex and one real isospin triplet scalar fields and preserves the custodial symmetry. Using the HEPfit, a Bayesian MCMC analysis package for particle physics, we scan for allowed parameter space under the constraints of Higgs productions and direct searches from LHC data, as well as various theory bounds. From the obtained parameter samples, we find that the model features only one-step electroweak phase transition at critical temperature of O(10-100) GeV that are sufficiently strong for baryogenesis.
