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arXiv · 1512.04901

Higgs production in heavy quark annihilation through next-to-next-to-leading order QCD

Robert V. Harlander
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Abstract

The total inclusive cross section for charged and neutral Higgs production in heavy-quark annihilation is presented through NNLO QCD. It is shown that, aside from an overall factor, the partonic cross section is independent of the initial-state quark flavors, and that any interference terms involving two different Yukawa couplings vanish. A simple criterion for defining the central renormalization and factorization scale is proposed. Its application to the $b\bar bH$ process yields results which are compatible with the values usually adopted for this process. Remarkably, we find little variation in these values for the other initial-state quark flavors. Finally, we disentangle the impact of the different parton luminosities from genuine hard NNLO effects and find that, for the central scales, a naive rescaling by the parton luminosities approximates the full result remarkably well.

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Robert V. Harlander. 2016-05-09. Higgs production in heavy quark annihilation through next-to-next-to-leading order QCD. https://doi.org/10.1140/epjc%2Fs10052-016-4093-x

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