Abstract
We propose simulation strategies for single production of third generation vector-like quarks at the LHC, implementing next-to-leading-order corrections in QCD and studying in detail their effect on cross sections and differential distributions. We also investigate the differences and the relative incertitudes induced by the use of the Four-Flavour Number Scheme versus the Five-Flavour Number Scheme. As a phenomenological illustration, we concentrate on the production of vector-like quarks coupling to the third generation of the Standard Model in association with a jet and assuming standard couplings to gauge and Higgs bosons.
Highlights
Many extensions of the Standard Model feature vectorlike quarks, or quarks whose left-handed and righthanded components lie in the same representation of the Standard Model gauge symmetry group
Current searches mostly rely on signatures induced by both their pair and single production, present bounds are mostly driven by the strong pair production mechanism, followed by a decay pattern in which each vector-like quark is assumed to decay into a Standard Model gauge or Higgs boson and a third-generation quark, both legs being potentially decaying differently
We study the single production of a vector-like top partner and investigate the effects of NLO corrections on both the total rates and differential distributions
Summary
Many extensions of the Standard Model feature vectorlike quarks, or quarks whose left-handed and righthanded components lie in the same representation of the Standard Model gauge symmetry group Their existence is predicted, for instance, in models featuring extra dimensions, an extended gauge symmetry or a composite Higgs sector [1,2,3,4,5], and their expected mass scale is generally such that they could be observed in current and future LHC data. For this reason, vector-like quark searches play a major role in the ATLAS and CMS searches for new phenomena.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
