Novel signatures for vector-like quarks release_zb77pfcgdfgbpgwyyjsoocddsa

Abstract

We consider supersymmetric extensions of the standard model with a vector-like doublet (T B) of quarks with charge 2/3 and -1/3, respectively. Compared to non-supersymmetric models, there is a variety of new decay modes for the vector-like quarks, involving the extra scalars present in supersymmetry. The importance of these new modes, yielding multi-top, multi-bottom and also multi-Higgs signals, is highlighted by the analysis of several benchmark scenarios. We show how the triangles commonly used to represent the branching ratios of the `standard' decay modes of the vector-like quarks involving W, Z or Higgs bosons can be generalised to include additional channels. We give an example by recasting the limits of a recent heavy quark search for this more general case.
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