Model-independent framework for searches of top partners
By M. Buchkremer, Giacomo Cacciapaglia, A. Deandrea, L. Panizzi. 2013
230 citations recorded by the source corpus.
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 electromagnetic 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. © 2013 Elsevier B.V.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/b5835b6af60dcdc1d18618dc3c52f37a63dd94ee
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In Nuclear and High Energy Physics
- Gudrun Heinrich
- Cms Collaboration
- Atlas Collaboration
- Ansgar Denner
- Stefan Dittmaier
- Stefan Kallweit
- Fabio Maltoni
- M. Grazzini
Citations in the corpus
- Vector boson fusion at multi-TeV muon colliders (2020, background): “The phenomenology of such models is rich, well-documented [168–172], and has led to LHC searches for vector-like top and bottom quarks in a variety of final states [173–178].”
- Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, background): “It can be shown that the couplings of the VLQs with the SM bosons and quarks always have a dominant chiral component [706, 707] and this depends only on whether their weak isospin is integer or half-integer, the other component being suppressed by a factor proportional to m q /mVLQ, with m SM q the ”