CP Violation for the Heavens and the Earth
George Wei-Shu Hou
National Taiwan University
Lundi 14/11/2022, 11:00-12:30
Bat 141, salle André Berthelot (143) , CEA Paris-Saclay

Electroweak baryogenesis can be driven by the top quark in a general two Higgs doublet model with extra Yukawa couplings. Higgs quartics provide the first order phase transition, while extra top Yukawa coupling ρtt can fuel the cosmic baryon asymmetry through the λt Im ρtt product, with flavor-changing ρtc coupling as backup. The impressive ACME 2018 bound on the electron electric dipole moment calls for an extra electron coupling ρee for exquisite cancellation among dangerous diagrams, broadening the baryogenesis solution space. The mechanism suggests that extra Yukawa couplings echo the hierarchical structure of standard Yukawa couplings. Phenomenological consequences in Higgs search and flavor physics are discussed, with μ and τ EDM touched upon.

Indico page : https://indico.in2p3.fr/event/28085/ 


It will be held in person in room A. Berthelot. For those who cannot attend in person, there will also be a zoom connection, available at this link : https://cern.zoom.us/j/68399739111?pwd=SGErcHBQYmVLWFZTVE9jdm5xSmdEdz09

Contact : François BRUN


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