Speaker
Ms
Kaori Fuyuto
(Nagoya University)
Description
We revisit an electroweak phase transition in the scale-invariant two Higgs doublet model in light of 125 GeV Higgs boson. The analysis is conducted by using the finite temperature one-loop effective potential with thermal resummation. We also discuss its impact on the
Higgs boson couplings. We find that the so-called sphaleron decoupling condition is more severe than the conventional one by about 20% in phenomenologically allowed regions.
It is also found that even when the Higgs couplings to the gauge boson and fermions are the same as in the standard model, a large deviation may appear in the triple Higgs boson coupling due to nondecoupling effects in this model.
Author
Ms
Kaori Fuyuto
(Nagoya University)
Co-author
Dr
Eibun Senaha
(Nagoya University)
