Automated Neutrino Jet and Top Jet Predictions at Next-to-Leading-Order with Parton Shower Matching in Effective Left-Right Symmetric Models

Abstract

Hadronic decays of boosted resonances, e.g., top quark jets, at hadronic super colliders are frequent predictions in TeV-scale extensions of the Standard Model of Particle Physics. In such scenarios, accurate modeling of QCD radiation is necessary for trustworthy predictions. We present the automation of fully differential, next-to-leading-order (NLO) in QCD corrections with parton shower (PS) matching for an effective Left-Right Symmetric Model (LRSM) that features $W_R^{\pm },Z_R$ gauge bosons and heavy Majorana neutrinos $N$. Publicly available universal model files require remarkably fewer user inputs for predicting benchmark collider processes than leading order LRSM constructions. We present predictions for inclusive $W_R^{\pm },Z_R$ production at the $\sqrt{s}=13$ TeV Large Hadron Collider (LHC) and a hypothetical future 100 TeV Very Large Hadron Collider (VLHC), as well as inclusive $N$ production for a hypothetical Large Hadron Electron Collider (LHeC). As a case study, we investigate at NLO+PS accuracy the properties of heavy neutrino (color-singlet) jets and top quark (color-triplet) jets from decays of high-mass $W_R$ bosons at the LHC. Contrary to top jets, we find that the kinematic properties of heavy neutrinos jets, and in particular jet mass, are resilient against the effects of parton showers and hard QCD radiation. This suggests that in searches for neutrino jets, aggressive selection cuts that would otherwise be inappropriate for top jets can be imposed with minimal signal loss.

28 pages, 7 figures, and 3 small appendices. Model files available from http://feynrules.irmp.ucl.ac.be/wiki/EffLRSM Happy Halloween!

References in corpus (19)

• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Event generation with SHERPA 1.1
• LHAPDF6: parton density access in the LHC precision era
• FeynRules - Feynman rules made easy
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• Top-tagging: A Method for Identifying Boosted Hadronic Tops
• Left-Right Symmetry: from LHC to Neutrinoless Double Beta Decay
• Strategies to Identify Boosted Tops
• Non-perturbative QCD Effects and the Top Mass at the Tevatron
• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry
• Top Mass Measurements from Jets and the Tevatron Top-Quark Mass
• Neutrino Jets from High-Mass $W_R$ Gauge Bosons in TeV-Scale Left-Right Symmetric Models
• Z' Phenomenology and the LHC
• Top-Quark Initiated Processes at High-Energy Hadron Colliders
• A Redux on "When is the Top Quark a Parton?"
• Simple Left-Right Theory: Lepton Number Violation at the LHC

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