  Multiple analyses from ATLAS and CMS collaborations, including searches for
ttH production, supersymmetric particles and vector-like quarks, observed
excesses in the same-sign dilepton channel containing b-jets and missing
transverse energy in the LHC Run 1 data. In the context of little Higgs
theories with T parity, we explain these excesses using vector-like T-odd
quarks decaying into a top quark, a W boson and the lightest T-odd particle
(LTP). For heavy vector-like quarks, decay topologies containing the LTP have
not been searched for at the LHC. The bounds on the masses of the T-odd quarks
can be estimated in a simplified model approach by adapting the search limits
for top/bottom squarks in supersymmetry. Assuming a realistic decay branching
fraction, a benchmark with a 750 GeV T-odd b-prime quark is proposed. We also
comment on the possibility to fit excesses in different analyses in a common
framework.

High Energy Physics - Phenomenology;High Energy Physics - Experiment