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arXiv · 1407.5089

Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction

Federico Demartin·Fabio Maltoni·Kentarou Mawatari·Ben Page·Marco Zaro
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Abstract

At the LHC the CP properties of the top-quark Yukawa interaction can be probed through Higgs production in gluon fusion or in association with top quarks. We consider the possibility for both CP-even and CP-odd couplings to the top quark to be present, and study CP-sensitive observables at next-to-leading order (NLO) in QCD, including parton-shower effects. We show that the inclusion of NLO corrections sizeably reduces the theoretical uncertainties, and confirm that di-jet correlations in $H+2$ jet production through gluon fusion and correlations of the top-quark decay products in $t\bar tH$ production can provide sensitive probes of the CP nature of the Higgs interactions.

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Federico Demartin, Fabio Maltoni, Kentarou Mawatari, Ben Page, Marco Zaro. 2014-10-01. Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction. https://doi.org/10.1140/epjc%2Fs10052-014-3065-2

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