Fully automated precision predictions for heavy neutrino production mechanisms at hadron colliders

Degrande, Céline; Mattelaer, Olivier; Ruiz, Richard; Turner, Jessica

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) Wγ → Nl and Nl þ 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 ðWhÞ, sparticle ðl~ ν~ lÞ, and charged Higgs ðhh∓Þ production. We present, for the first time, a comparison of all leading N production modes, including both gluon fusion (GF) gg → Z=h → Nνl ð−Þ 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 þ 1j rate; at a future 100 TeV Very Large Hadron Collider, GF dominates for mN ¼ 300–1500 GeV, beyond which VBF takes the lead.

Citation

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), Article 053002. https://doi.org/10.1103/physrevd.94.053002

• Journal Article Type: Article
• Online Publication Date: Sep 6, 2016
• Publication Date: Sep 30, 2016
• Deposit Date: Sep 12, 2019
• Publicly Available Date: Sep 20, 2019
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 94
• Issue: 5
• Article Number: 053002
• DOI: https://doi.org/10.1103/physrevd.94.053002
• Public URL: https://durham-repository.worktribe.com/output/1322123
• Related Public URLs: https://arxiv.org/abs/1602.06957