Yukawa correction to top-quark production at the Tevatron

Details Yukawa correction to top-quark production at the Tevatron Yukawa correction to top-quark production at the Tevatron

1993-02-23

arxiv.org/abs/hep-ph/9302291v1

Phys.Rev. D48 (1993) 2054-2061

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, Fermilab-pub-93/027-T, BNL-48577

Scientific paper

10.1103/PhysRevD.48.2054

We calculate the correction to $\qbq\to\tbt$ of order $\gmm$. This correction, proportional to the square of the Higgs-boson Yukawa coupling to the top quark, arises from loops of Higgs bosons and the scalar component of virtual vector bosons. The Yukawa correction to the total \tbt\ production cross section at the Fermilab Tevatron in the standard Higgs model is found to be much less than the theoretical uncertainty in the cross section. However, in a two-Higgs-doublet model, Yukawa couplings are generally enhanced. The Yukawa correction can increase the total $t\bar t$ production cross section in this model by as much as $20$-$35\%$, which is potentially observable at the Tevatron.

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