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Search strategies for TeV scale fermionic top partners with charge 2/3

  • Mihailo Backović
  • Thomas Flacke
  • Jeong Han KimEmail author
  • Seung J. Lee
Open Access
Regular Article - Theoretical Physics

Abstract

Searches for fermionic top partners at the TeV scale will bring forward a new final state kinematic regime and event topologies, where Run I search strategies will inevitably fail. We propose concrete search strategies for singly produced charge 2/3 fermionic top partners (T ) adequate for LHC Run II. Our analysis spans over all of the T′ decay modes (i.e. tZ, th and Wb) where we present detailed discussion of the search performances, signal efficiencies and backgrounds rates. Our LHC Run II search proposals utilize signatures with large missing energy and leptons, as well as jet substructure observables for tagging of boosted heavy SM states, customized b-tagging tactics and forward jet tagging. We analyze the prospects for discovery and exclusion of T models within the framework of partially composite quarks at the LHC Run II. Our results show that the LHC Run II has good prospects for observing T models which predict single production cross section of σ T ∼ 70 − 140 (30 − 65) fb for M T = 1 (1.5) TeV respectively with 100 fb−1 of integrated luminosity, depending on the branching ratios of the T . Similarly, we find that cross sections of σ T ∼ 27 − 60 (13 − 24) fb for M T = 1 (1.5) TeV respectively can be excluded with the same amount of data. Our results are minimally model dependent and can be applied to most T models where Γ T M T .

Keywords

Beyond Standard Model Technicolor and Composite Models 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2016

Authors and Affiliations

  • Mihailo Backović
    • 1
  • Thomas Flacke
    • 2
  • Jeong Han Kim
    • 3
    • 4
    Email author
  • Seung J. Lee
    • 2
    • 5
  1. 1.Center for Cosmology, Particle Physics and Phenomenology — CP3Universite Catholique de LouvainLouvain-la-neuveBelgium
  2. 2.Department of PhysicsKorea UniversitySeoulKorea
  3. 3.Department of PhysicsKorea Advanced Institute of Science and TechnologyYuseong-guKorea
  4. 4.Center for Theoretical Physics of the Universe and Center for Axion and Precision Physics Research, IBSDaejeonKorea
  5. 5.School of PhysicsKorea Institute for Advanced StudySeoulKorea

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