2013/05/31 by M. Buchkremer, Mathieu Buchkremer, G. Cacciapaglia +5 · 2 citations
Mathematics · Physics and Astronomy · #Connection (principal bundle) #Coupling (piping) #Geometry #High-Energy Particle Collisions Research #Lagrangian #Large Hadron Collider #Mathematics #Mixing (physics) #Multiplet #Observable #Particle physics #Particle physics theoretical and experimental studies #Phenomenology (philosophy) #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Spectral line #Theoretical physics #Yukawa potential #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2013.08.010
42 pages, 2 figures, 20 tables, added an appendix with a discussion of coupling chirality in general scenarios; added a comparison of collider and flavour bounds; added details about the range of validity of the framework. References added
arxiv created 2013/08/13 · openalex publication_date 2013/08/27 · arxiv updated 2015/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We propose a model-independent and general framework to study the LHC phenomenology of top partners, i.e. Vector-Like quarks including particles with different electro-magnetic charge. We consider Vector-Like quarks embedded in general representations of the weak SU(2)L, coupling to all Standard Model quarks via Yukawa mixing focusing on the case of a single multiplet. We show that, with very minimal and quite general assumptions, top partners may be studied in terms of few parameters in an effective Lagrangian description with a clear and simple connection with experimental observables. We also demonstrate that the parametrisation can be applied as well to cases with many Vector-like multiplets, thus covering most realistic models of New Physics. We perform a numerical study to understand the conclusions which can be drawn within such a description and the expected potential for discovery or exclusion at the LHC. Our main results are a clear connection between branching ratios and single production channels, and the identification of novel interesting channels to be studied at the LHC.