A 'Higgs Troika' with two TeV-scale additional Higgs doublets and right-handed neutrinos can generate the observed baryon asymmetry while surviving current flavor and collider constraints.
The washout bound then implies ε≪ 4× 10−10, which suggests that baryogenesis is not feasible
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Higgs Troika for Baryon Asymmetry
A 'Higgs Troika' with two TeV-scale additional Higgs doublets and right-handed neutrinos can generate the observed baryon asymmetry while surviving current flavor and collider constraints.