Kaori Fuyuto

Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended standard model

We improve the sphaleron decoupling condition in the real singlet-extended standard model. The sphaleron energy is obtained using the finite temperature one-loop effective potential with daisy resummation. For moderate values of the model parameters, the sphaleron decoupling condition is found to be

Neutron electric dipole moment induced by strangeness revisited

v_C/T_C>(1.1-1.2)

QCD corrections to quark (chromo)electric dipole moments in high-scale supersymmetry

, where

Toward verification of electroweak baryogenesis by electric dipole moments

T_C

Top Down Electroweak Dipole Operators

denotes a critical temperature and

Z′ -induced FCNC decays of top, beauty, and strange quarks

v_C

Sphaleron and critical bubble in the scale invariant two Higgs doublet model

is the corresponding vacuum expectation value of the doublet Higgs field at

Loophole in K --> pi nu nubar Search and New Weak Leptonic Forces

T_C

Implications of hidden gauged U(1) model for B anomalies

. We also investigate the deviation of the triple Higgs boson coupling from its standard model value in the region where the improved sphaleron decoupling condition is satisfied. As a result of the improvement, the deviation of the triple Higgs boson coupling gets more enhanced. In a typical case, if the Higgs couplings to the gauge bosons/fermions deviate from the SM values by about 3 (10)%, the deviation of the triple Higgs boson coupling can be as large as about 16 (50)%, which is about 4 (8)% larger than that based on the conventional criterion

Loophole in

v_C/T_C>1