Fully automated precision predictions for heavy neutrino production mechanisms at hadron colliders
(2016) Physical Review D — Vol. 94, n° 5 (2016) (2016)
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- Authors
- Abstract
- Motivated by TeV-scale neutrino mass models, we propose a systematic treatment of heavy neutrino (N) production at hadron colliders. Our simple and efficient modeling of the vector boson fusion (VBF) W±γ→Nℓ± and Nℓ±+nj signal definitions resolve collinear and soft divergences that have plagued past studies, and is applicable to other color-singlet processes, e.g., associated Higgs (W±h), sparticle (ℓ˜±νℓ˜), and charged Higgs (h±±h∓) production. We present, for the first time, a comparison of all leading N production modes, including both gluon fusion (GF) gg→Z*/h*→Nνℓ(-) and VBF. We obtain fully differential results up to next-to-leading order (NLO) in QCD accuracy using a Monte Carlo tool chain linking feynrules, nloct, and madgraph5_amc@nlo. Associated model files are publicly available. At the 14 TeV LHC, the leading order GF rate is small and comparable to the NLO Nℓ±+1j rate; at a future 100 TeV Very Large Hadron Collider, GF dominates for mN=300–1500 GeV, beyond which VBF takes the lead.
- Affiliations
Durham IPPP
Citations
Degrande, C., Mattelaer, O., Ruiz, R., & Turner, J. (2016). Fully automated precision predictions for heavy neutrino production mechanisms at hadron colliders. Physical Review D, 94(5 (2016)). https://doi.org/10.1103/physrevd.94.053002 (Original work published 2016)