2011/02/28 by P. M. Ferreira, J. P. Silva, João P. Silva +1 · 1 citation
Physics and Astronomy · #CP violation #Cabibbo–Kobayashi–Maskawa matrix #Flavour #Higgs boson #High-Energy Particle Collisions Research #Mixing (physics) #Observable #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Scalar (mathematics) #Yukawa potential #hep-ph
paper · pdf · doi:10.1016/j.physletb.2011.08.071
published as Phys.Lett.B704:179-188,2011 · Included constraints due to oblique parameters and direct LEP searches
openalex publication_date 2011/09/02 · arxiv created 2011/11/18 · arxiv updated 2011/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a two-Higgs-doublet model, with a \mathbbmZ3 symmetry, in which CP violation originates solely in a soft (dimension-2) coupling in the scalar potential, and reveals itself solely in the CKM (quark mixing) matrix. In particular, in the mass basis the Yukawa interactions of the neutral scalars are all real. The model has only eleven parameters to fit the six quark masses and the four independent CKM-matrix observables. We find regions of parameter space in which the flavour-changing neutral couplings are so suppressed that they allow the scalars to be no heavier than a few hundred GeV.