Abstract
In the Littlest Higgs model with T-parity (LHT),
top-partners (T−) are produced in pairs
at the Large Hadron Collider (LHC).
Each top-partner decays into a top quark (t) and the lightest
T-odd gauge partner AH.
We demonstrate reconstruction of the t
system decaying
hadronically, and measurement of the top-partner mass
from the mT2 distribution.
A top quark from a T− decay is polarized, and we discuss the effect of this polarization
on the decay distributions.
Because the events consist of highly collinear jets which
occasionally overlap each other,
we compare distributions using different jet reconstruction
algorithms (Snowmass cone, kt, Cambridge, SISCone).
We find clustering algorithms are advantageous
for studying top polarization effects.
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