Top Partner Discovery in the T → tZ channel at the LHC

2014/09/30 by Jürgen Reuter, J. Reuter, M. Tonini +1
Engineering · Mathematics · Physics and Astronomy · #Boson #Branching fraction #Channel (broadcasting) #Computer science #Engineering #Geometry #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Mathematics #Mechanics #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Substructure #Telecommunications #Vector boson #hep-ex #hep-ph

paper · pdf · doi:10.1007/jhep01(2015)088

published as JHEP 1501 (2015) 088 · 24 pages, 8 figures, version 2 updated to JHEP 01 (2015) 088

openalex publication_date 2015/01/01 · arxiv created 2015/01/27 · arxiv updated 2015/01/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In this paper we study the discovery potential of the LHC run II for heavy vector-like top quarks in the decay channel to a top and a Z boson. Despite the usually smaller branching ratio compared to charged-current decays, this channel is rather clean and allows for a complete mass reconstruction of the heavy top. The latter is achieved in the leptonic decay channel of the Z boson and in the fully hadronic top channel using boosted jet and jet substructure techniques. To be as model-independent as possible, a simplified model approach with only two free parameters has been applied. The results are presented in terms of parameter space regions for 3σ evidence or 5σ discovery for such new states in that channel.

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