Probing a new decay of vector-like top partner mediated by heavy Majorana neutrino via single production

Abstract

Models beyond the Standard Model have been proposed to simultaneously solve the problems of naturalness and neutrino mass, in which heavy Majorana neutrinos and vector-like top partners are usually predicted. A new decay channel of the top partner mediated by the heavy Majorana neutrino can thus appear: $T\to b{W}^{+}\to b{\ell }^{+}{\ell }^{+}q\overline{q^{\prime }}$. We study in this paper the observability of this decay process through single production of the top partner at the 14 TeV LHC: $pp\to T/\bar{T}$+jets$\to b/\bar{b}+{\mu }^{\pm }{\mu }^{\pm }$+jets. $2\sigma$ exclusion bounds on the top partner mass and mixing parameters are given by Monte-Carlo simulation, which surpass those from the search through VLT pair production in the mass range of $m_T>1.3$ TeV.

16 pages, 3 figures, 1 table; Accepted by Physical Review D. arXiv admin note: text overlap with arXiv:2003.09199

References in corpus (23)

• 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
• Pileup subtraction using jet areas
• Light custodians in natural composite Higgs models
• Right-Handed Neutrinos at LHC and the Mechanism of Neutrino Mass Generation
• Signatures for Majorana neutrinos at hadron colliders
• Opening a new window for warm dark matter
• Probing seesaw at LHC
• The low-scale approach to neutrino masses
• Low Energy Signatures of the TeV Scale See-Saw Mechanism
• Particle-level pileup subtraction for jets and jet shapes
• Testing neutrino masses in little Higgs models via discovery of doubly charged Higgs at LHC
• Derivation of Dark Matter Parity from Lepton Parity
• LHC Higgs Signatures from Extended Electroweak Gauge Symmetry
• Extending Higgs Inflation with TeV Scale New Physics
• Constraining Top partner and Naturalness at the LHC and TLEP
• Search for single production of a top quark partner via the $T\to th$ and $h\to W{W}^{\ast }$ channels at the LHC
• Inverse see-saw neutrino masses in the Littlest Higgs model with T-parity
• Polarization of top quark in vector-like quark decay
• The impossibility of heavy neutrino dark matter in the Littlest Higgs Model with T-parity: constraints from direct search
• Non-thermal leptogenesis with distinct CP violation and minimal dark matter

Cited by in corpus (5)

• Search for pair production of the heavy vectorlike top partner in same-sign dilepton signature at the HL-LHC
• Search for single vector-like $B$ quark production in hadronic final states at the LHC
• Pair production of the singlet vector-like B quark at the CLIC
• Search for the singlet vector-like top quark in the $T\to tZ$ channel with $Z\to \nu \bar{\nu }$ at hadron colliders
• Exploring vector-like $B$-quark pair production at CLIC in fully hadronic final states