Search for single production of the vector-like top partner at the 14 TeV LHC

Abstract

The new heavy vector-like top partner~($T$) is one of typical features of many new physics models beyond the standard model. In this paper we study the discovery potential of the LHC for the vector-like $T$-quark both in the leptonic $T\to bW$ and $T\to t_{\mathrm{lep}}{Z}_{\mathrm{lep}}$ (trilepton) channels at $\sqrt{s}=14$ TeV in the single production mode. Our analysis is based on a simplified model including a $SU(2{)}_L$ singlet with charge $2/3$ with only two free parameters, namely the $TWb$ coupling parameter $g^{\ast }$ and the top partner mass $m_T$. The $2\sigma$ exclusion limits, $3\sigma$ evidence and the $5\sigma$ discovery reach in the parameter plane of $g^{\ast }-m_T$, are, respectively, obtained for some typical integrated luminosity at the 14 TeV LHC. Finally we analyze the projected sensitivity in terms of the production cross section times branching fraction for two decay channel.

15 pages, 10 figures, 2 tables. version in EPJC

References in corpus (41)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• 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
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• NNLL resummation for s-channel single top quark production
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Collider Signals of Top Quark Flavor Violation from a Warped Extra Dimension
• The Twin Higgs mechanism and Composite Higgs
• A Three Site Higgsless Model
• Colorless Top Partners, a 125 GeV Higgs, and the Limits on Naturalness
• Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
• Search for pair and single production of new heavy quarks that decay to a $Z$ boson and a third-generation quark in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• On the Interpretation of Top Partners Searches
• Bounds and Decays of New Heavy Vector-like Top Partners
• Hunting for the Top Partner in the Littlest Higgs Model with T-parity at the LHC
• QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
• Stabilizing Electroweak Vacuum in a Vector-like Fermion Model
• LHC Higgs Signatures from Extended Electroweak Gauge Symmetry
• LHC Signatures of Two-Higgs-Doublets with Fourth Family
• Electroweak Precision Constraints on Vector-like Fermions
• Production of a W boson and two jets with one b-quark tag
• Measurement of top quark-antiquark pair production in association with a W or Z boson in pp collisions at sqrt(s) = 8 TeV
• Early discovery of top partners and test of the Higgs nature
• Framework for Model Independent Analyses of Multiple Extra Quark Scenarios
• Study of the top reconstruction in top-partner events at the LHC
• Constraining Top partner and Naturalness at the LHC and TLEP
• Top Partners and Higgs Boson Production
• Single production of the top partners at high energy colliders
• Search Strategies for Top Partners in Composite Higgs models
• Impact of Single-Top Measurement to Littlest Higgs Model with T-Parity
• Top Partner Discovery in the $T\to tZ$ channel at the LHC
• Model Independent Constraints Among the Wtb, Zbb, and Ztt Couplings
• Search for single production of the heavy vectorlike $T$ quark with $T\to th$ and $h\to \gamma \gamma$ at the high-luminosity LHC
• The production and decay of the top partner $T$ in the left-right twin higgs model at the ILC and CLIC
• Discovery potential for $T^{\prime }\to tZ$ in the trilepton channel at the LHC
• Searches for the $t^{\prime }$ of a fourth family
• Reconstruction of Vector-like Top Partner from Fully Hadronic Final States
• Hadronic $b^{\prime }$ search at the LHC with top and W taggers
• Top and bottom partners, Higgs boson on the brane, and the tth signal

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