A Nonperturbative, Schwinger-Dyson-Equation Analysis of Quark Masses and Mixings in a Model with QCD and Higgs Interactions
نویسندگان
چکیده
The Schwinger-Dyson equation for the quark self-energy is solved in the quenched ladder approximation for several cases of oneand two-quark-generations. The exchanges of standard model gluons and Higgs bosons are taken into account. It is found that Higgs boson exchange dominates the quark self-energy in the ultraviolet region for sufficiently large input quark masses (> 75 GeV), causing the running quark propagator mass to increase with energy-scale. The running of the quark mixing angles is also considered. No running of the quark mixing angles is found for input quark masses up to and including 500 GeV.
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