Electric dipole moment of the neutron from a flavor changing Higgs boson

Understand

I consider neutron electric dipole moment contributions induced by flavor changing Standard Model Higgs boson couplings to quarks.

• Such couplings might stem from non-renormalizable $SU(2)_L \times U(1)_Y$ invariant Lagrange terms of dimension six, containing a product of three Higgs doublets.
• Previously one loop diagrams with such couplings were considered in order to constrain {\it quadratric} expressions of Higgs flavor changing couplings to quarks.
• In the present paper the analysis is extended to the two loop level, where there are diagrams for electric dipole moments of quarks with a flavor changing Higgs coupling to {\it first order only}.