T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

Abstract

In the littlest Higgs Model with T-parity, we discuss the pair production of the T-odd top partner ($T_{-}$) which decays almost 100\% into the top quark and the lightest T-odd particle ($A_H$). Considering the current constraints, we investigate the observability of the T-odd top partner pair production through the process $pp\to T_{-}{\bar{T}}_{-}\to t\bar{t}{A}_H{A}_H$ in final states with two leptons at 14 TeV LHC. We analyze the signal significance and find that the lower limit on the T-odd top partner mass are about 1.04 TeV, 1.14 TeV, 1.23 TeV at $2\sigma$ confidence level at 14TeV LHC with the integrated luminosity of 30 fb${}^{-1}$, 100fb${}^{-1}$, 300fb${}^{-1}$. This lower limit can be raised to about 1.34(1.44) TeV if we use 1000(3000) fb${}^{-1}$ of integrated luminosity.

arXiv commenttypos corrected, calculations and results are updated. arXiv admin note: text overlap with arXiv:1706.02821

References in corpus (48)

• 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
• PYTHIA 6.2 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• The anti-k_t jet clustering algorithm
• FastJet user manual
• Asymptotic formulae for likelihood-based tests of new physics
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• The total top quark pair production cross-section at hadron colliders through O(alpha_S^4)
• Top++: a program for the calculation of the top-pair cross-section at hadron colliders
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• HiggsBounds: Confronting Arbitrary Higgs Sectors with Exclusion Bounds from LEP and the Tevatron
• Percent level precision physics at the Tevatron: first genuine NNLO QCD corrections to q qbar -> t tbar + X
• Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation
• HiggsBounds-4: Improved Tests of Extended Higgs Sectors against Exclusion Bounds from LEP, the Tevatron and the LHC
• HiggsSignals: Confronting arbitrary Higgs sectors with measurements at the Tevatron and the LHC
• HiggsBounds 2.0.0: Confronting Neutral and Charged Higgs Sector Predictions with Exclusion Bounds from LEP and the Tevatron
• NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels
• TeV Symmetry and the Little Hierarchy Problem
• NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction
• m_T2 : the truth behind the glamour
• Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC
• Applying Exclusion Likelihoods from LHC Searches to Extended Higgs Sectors
• T Parity and the Littlest Higgs
• Top Partners at the LHC: Spin and Mass Measurement
• Top Partners in Little Higgs Theories with T-parity
• Higgs Boson Production and Decay in Little Higgs Models with T-parity
• Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
• Anomalous Top-Higgs Couplings and Top Polarisation in Single Top and Higgs Associated Production at the LHC
• Direct Bounds on Heavy Top-Like Quarks With Standard and Exotic Decays
• Top quark forward-backward asymmetry, FCNC decays and like-sign pair production as a joint probe of new physics
• Search for New Phenomena in ttbar Events with Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt(s) = 7 TeV with the ATLAS Detector
• Top Quark Pair plus Large Missing Energy at the LHC
• Littlest Higgs with T-parity: Status and Prospects
• Constraining Top partner and Naturalness at the LHC and TLEP
• Odd Top Partners at the LHC
• Top Partner Discovery in the $T\to tZ$ channel at the LHC
• Single top partner production in the Higgs to diphoton channel in the Littlest Higgs Model with $T$-parity
• Search for single production of the vector-like top partner at the 14 TeV LHC
• Lepton flavor violating Higgs decay $h\to \mu \tau$ in the littlest Higgs Model with T-parity
• Search for single production of the heavy vectorlike $T$ quark with $T\to th$ and $h\to \gamma \gamma$ at the high-luminosity LHC
• Higgs couplings and Naturalness in the littlest Higgs model with T-parity at the LHC and TLEP
• Central-edge asymmetry as a probe of Higgs-top coupling in $t\bar{t}h$ production at LHC
• Discovery potential for $T^{\prime }\to tZ$ in the trilepton channel at the LHC
• Little Higgs Dark Matter after PandaX-II/LUX 2016 and LHC Run-1
• Search for $thj$ production with $h\to \gamma \gamma$ at the LHC in the littlest Higgs model with T-parity

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• 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
• Mono-b events from single stop production at the HL-LHC and HE-LHC
• Phenomenological implications of the new Littlest Higgs model with T-parity