Top-assisted di-Higgs boson production motivated by baryogenesis
Journal
Physical Review D
Journal Volume
97
Pages
55046
Date Issued
2017
Author(s)
Abstract
We study top-assisted di-Higgs production via cg→tH→thh, where h is the 125 GeV scalar boson and H is the CP-even heavy Higgs. The context is the two Higgs doublet model without a Z2 symmetry, where the extra Yukawa coupling ρtc generates tH production, with the extra top Yukawa ρtt≃0 to avoid gg→H constraints. We find that discovery is possible for mH around 300 GeV or so at the LHC but would need finite h-H mixing angle cosγ to allow for finite λHhh coupling, and ρtc also needs to be not too small. A sizable ρtc could drive electroweak baryogenesis, which further motivates the search.
Type
journal article