Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction
Federico DemartinCentre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, 1348 Louvain-la-Neuve, BelgiumFabio MaltoniCentre for Cosmology, Particle Physics and Phenomenology (CP3), Université catholique de Louvain, 1348 Louvain-la-Neuve, BelgiumKentarou MawatariTheoretische Natuurkunde and IIHE/ELEM, Vrije Universiteit Brussel, and International Solvay Institutes, Pleinlaan 2, 1050 Brussels, BelgiumBen PageDepartamento de Física Teórica y del Cosmos y CAFPE, Universidad de Granada, Granada, SpainMarco ZaroSorbonne Universités, UPMC University Paris 06, UMR 7589, LPTHE, 75005 Paris, France ; CNRS, UMR 7589, LPTHE, 75005 Paris, France
2014en
ABI
Аннотация
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 $$t\bar{t}H$$ production can provide sensitive probes of the CP nature of the Higgs interactions.
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