Probing top-antitop resonances with $t\bar{t}$ scattering at LHC14

Abstract

We explore the sensitivity of the LHC at 14 TeV centre-of-mass energy (LHC14) to the single production and decay of top-antitop resonances in the four-top final state. We focus on the same-sign dilepton channel, and work within a simplified model with a vector boson coupling to the Standard Model only via its interactions with right-handed top quarks. We find it is possible to discover (exclude) such a vector boson with 300 fb${}^{-1}$ of integrated luminosity up to a mass of 1.2 (1.6) TeV for a modest coupling to tops of $g_{\rho }$=2. We present our results as an exclusion limit on the cross-section$\times$branching ratio for ease of recasting, and interpret them in the context of the gauge-singlet vector boson ${\rho }_X$ present in many simple Composite Higgs theories.

References in corpus (16)

• PYTHIA 6.4 Physics and Manual
• FeynRules - Feynman rules made easy
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
• Search for high-mass dilepton resonances in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• LHC Signals for Warped Electroweak Neutral Gauge Bosons
• Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Search for massive resonances in dijet systems containing jets tagged as W or Z boson decays in pp collisions at sqrt(s) = 8 TeV
• Efficient Identification of Boosted Semileptonic Top Quarks at the LHC
• Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at sqrt(s) = 8 TeV
• Tasi 2009 lectures: The Higgs as a Composite Nambu-Goldstone Boson
• Bounding wide composite vector resonances at the LHC
• Top Compositeness at the Tevatron and LHC
• Top-Quark Initiated Processes at High-Energy Hadron Colliders
• Model-Independent Production of a Top-Philic Resonance at the LHC
• Top Partners Searches and Composite Higgs Models

Cited by in corpus (3)

• Four Tops for LHC
• Probing TeV scale Top-Philic Resonances with Boosted Top-Tagging at the High Luminosity LHC
• Broad composite resonances and their signals at the LHC