CP3-14-59
LPN14-096
MCNET-14-21
arXiv:1407.5089
Eur.Phys.J. C74 (2014) 3065

by: Demartin, Federico (Louvain U., CP3) et al.

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 $t\bar{t}H$ production can provide sensitive probes of the CP nature of the Higgs interactions.