摘要: We explore the possibility that the right-handed top quark is composite. We examine the consequences
that compositeness would have on tt production at the Tevatron, and derive a weak
constraint on the scale of compositeness of order a few hundred GeV from the tt inclusive cross
section. More detailed studies of differential properties of tt production could potentially improve
this limit. We find that a composite top can result in an enhancement of the tttt production rate at
the LHC (of as much as 103
compared to the Standatd Model four top rate). We explore observables
which allow us to extract the four top rate from the backgrounds, and show that the LHC can either
discover or constrain top compositeness for wide ranges of parameter space.