Fully-Automated Precision Predictions for Heavy Neutrino Production Mechanisms at Hadron Colliders

By Céline Degrande, Olivier Mattelaer, R. Ruiz, J. Turner. 2016

141 citations recorded by the source corpus.

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) ${W}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\gamma}\ensuremath{\rightarrow}N{\ensuremath{\ell}}^{\ifmmode\pm\else\textpm\fi{}}$ and $N{\ensuremath{\ell}}^{\ifmmode\pm\else\textpm\fi{}}+nj$ signal definitions resolve collinear and soft divergences that have plagued past studies, and is applicable to other color-singlet processes, e.g., associated Higgs $({W}^{\ifmmode\pm\else\textpm\fi{}}h)$, sparticle $({\stackrel{\texttildelow{}}{\ensuremath{\ell}}}^{\ifmmode\pm\else\textpm\fi{}}\stackrel{\texttildelow{}}{{\ensuremath{\nu}}_{\ensuremath{\ell}}})$, and charged Higgs $({h}^{\ifmmode\pm\else\textpm\fi{}\ifmmode\pm\else\textpm\fi{}}{h}^{\ensuremath{\mp}})$ production. We present, for the first time, a comparison of all leading $N$ production modes, including both gluon fusion (GF) $gg\ensuremath{\rightarrow}{Z}^{*}/{h}^{*}\ensuremath{\rightarrow}N\stackrel{(\ensuremath{-})}{{\ensuremath{\nu}}_{\ensuremath{\ell}}}$ 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 $N{\ensuremath{\ell}}^{\ifmmode\pm\else\textpm\fi{}}+1j$ rate; at a future 100 TeV Very Large Hadron Collider, GF dominates for ${m}_{N}=300\char21{}1500\text{ }\text{ }\mathrm{GeV}$, beyond which VBF takes the lead.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3a346fec50f6dee9c96d94f0c3ac974d04a29004

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Vector boson fusion at multi-TeV muon colliders (2020, unknown): “[159, 160].”
Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, background): “s [368, 369], for mN > MW and at various accuracies, the corresponding p s = 14 TeV heavy neutrino production cross sections are presented in Fig.”
Phenomenology of GeV-scale heavy neutral leptons (2018, background): “Process b) starts to play an important role for much higher centre-of-mass energies [72, 73], process a) and c) should be studied more accurately.”
Lepton Number Violation: Seesaw Models and Their Collider Tests (2017, methodology): “[255], neglecting this fact has led to conflicting predictions in several studies on heavy neutrino production in pp collisions.”