Search for the singlet vector-like top quark in the $T\to tZ$ channel with $Z\to \nu \bar{\nu }$ at hadron colliders

Abstract

Based on a simplified model including a singlet vector-like top quark $T$ with charge $|Q|=2/3$, we analyze the prospects of observing $T$ via the single $T$ production in the $tZ$ channel with $Z$ decaying to neutrinos at the hadron-hadron colliders. This simplified model only includes two free parameters, the coupling constant $g^{\ast }$ and the $T$ quark mass $m_T$. To investigate the observability of the single $T$ production, we perform a detailed background analysis and detector simulation for the collision energies 14~TeV, 27~TeV, and 100~TeV. We scan the $g^{\ast }-m_T$ parameter space and show the exclusion and discovery capabilities on the $T$ quark with the highest integrated luminosity designed at these colliders. Moreover, the limits from the narrow-width approximation and electroweak precision observables are considered.

17 pages, 7 figures. References added

References in corpus (17)

• 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
• MadAnalysis 5, a user-friendly framework for collider phenomenology
• The Twin Higgs mechanism and Composite Higgs
• On the Interpretation of Top Partners Searches
• Early discovery of top partners and test of the Higgs nature
• Interpreting the $W$-mass anomaly in the vectorlike quark models
• Constraining Top partner and Naturalness at the LHC and TLEP
• New sensitivity of current LHC measurements to vector-like quarks
• Search for single production of the vector-like top partner at the 14 TeV LHC
• Hunting for top partner with a new signature at the LHC
• Anomalous single production of fourth generation $t^{\prime }$ quarks at ILC and CLIC
• The Single Top Quark Physics
• Search for pair production of the heavy vectorlike top partner in same-sign dilepton signature at the HL-LHC
• Single production of vector-like top partner decaying to $Wb$ in the leptonic channel at $ep$ colliders in the LHT model
• Probing a new decay of vector-like top partner mediated by heavy Majorana neutrino via single production
• Probing vector-like top partner from same-sign dilepton events at the LHC

Cited by in corpus (2)

• Search for charged Higgs bosons through vector-like top quark pair production at the LHC
• Searching for single production of vectorlike quarks decaying into Wb at a future muon-proton collider