title: Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction.
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 [Formula: see text] jet production through gluon fusion and correlations of the top-quark decay products in [Formula: see text] production can provide sensitive probes of the CP nature of the Higgs interactions.
authors: Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium.
authors: Federico
authors: F
authors: Demartin
authors: Centre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium.
authors: Fabio
authors: F
authors: Maltoni
authors: Theoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050 Brussels, Belgium.
authors: Kentarou
authors: K
authors: Mawatari
authors: Departamento de Física Teórica y del Cosmos y CAFPE, Universidad de Granada, Granada, Spain.
authors: Ben
authors: B
authors: Page
authors: Sorbonne Universités, UPMC University Paris 06, UMR 7589, LPTHE, 75005 Paris, France ; CNRS, UMR 7589, LPTHE, 75005 Paris, France.
authors: Marco
authors: M
authors: Zaro