Effective Higgs-to-Light-Quark Coupling Induced by Heavy Quark Loops
M. R. Ahmady, V. Elias, A. H. Fariborz, R. R. Mendel
Abstract
We study the coupling arising via perturbative QCD of zero 4-momentum Higgs bosons to light quarks inside the nucleon. Qualitative comparison with the results obtained from one-loop-order low energy theorems for the Higgs-nucleon interaction suggests the existence of a dynamical light-quark mass which falls off with momentum. Quantitative comparison leads to an estimate of αs at very low q2 quite near unity.
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