Higgs off-shell effects at NLO
Proceedings of Science Part F128556 (2016)
Abstract:
We describe a recent computation of next-to-leading order (NLO) QCD corrections to the gluonic production of two massive vector bosons, including both prompt gg → VV production and the Higgs-mediated production gg → H∗ → VV, as well as their interference. Both massless and massive quark loops are considered, with the NLO corrections to the latter being treated in a large mass expansion. We present results in the sizable window between the Higgs and top production thresholds. The NLO corrections are large and similar in size for the signal, background, and interference processes. The NLO corrections are also roughly constant in the invariant mass of the diboson pair, except near the 2mV threshold, where the corrections to the interference change dramatically.QCD corrections to ZZ production in gluon fusion at the LHC
Physical Review D American Physical Society (APS) 92:9 (2015) 094028
Fiducial cross sections for Higgs boson production in association with a jet at next-to-next-to-leading order in QCD
Physical Review D American Physical Society (APS) 92:7 (2015) 074032
Higgs Boson production in association with a jet at next-to-next-to-leading order
Physical Review Letters American Physical Society 115:8 (2015) 082003
Abstract:
We present precise predictions for Higgs boson production in association with a jet. We work in the Higgs effective field theory framework and compute next-to-next-to-leading order QCD corrections to the gluon-gluon and quark-gluon channels, which is sufficient for reliable LHC phenomenology. We present fully differential results as well as total cross sections for the LHC. Our next-to-next-to-leading order predictions reduce the unphysical scale dependence by more than a factor of 2 and enhance the total rate by about twenty percent compared to next-to-leading order QCD predictions. Our results demonstrate for the first time satisfactory convergence of the perturbative series.Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in gluon fusion
Journal of High Energy Physics Springer Nature 2015:6 (2015) 129