The NNLO gluon fusion Higgs production cross-section with many heavy quarks

Details The NNLO gluon fusion Higgs production cross-section with many heavy quarks The NNLO gluon fusion Higgs production cross-section with many heavy quarks

2010-03-24

arxiv.org/abs/1003.4677v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 table

Scientific paper

We consider extensions of the Standard Model with a number of additional heavy quarks which couple to the Higgs boson via top-like Yukawa interactions. We construct an effective theory valid for a Higgs boson mass which is lighter than twice the lightest heavy quark mass and compute the corresponding Wilson coefficient through NNLO. We present numerical results for the gluon fusion cross-section at the Tevatron for an extension of the Standard Model with a fourth generation of heavy quarks. The gluon fusion cross-section is enhanced by a factor of roughly 9 with respect to the Standard Model value. Tevatron experimental data can place stringent exclusion limits for the Higgs mass in this model.

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