  Jets initiated by energetic quarks carry in an obvious way approximate
information about the original quark energy and momentum. In a less obvious
way, they also carry information about the quark polarization. Previous works
have shown how the polarization information can be extracted by ATLAS and CMS
using events in which the quark hadronizes to an energetic baryon - $\Lambda_b$
for $b$ quarks, $\Lambda_c$ for $c$ quarks and $\Lambda$ for $s$ quarks. In
this paper we extend these proposals to $\Sigma^+$ baryons, which can provide
sensitivity to polarizations of $s$ and $u$ quarks. We analyze the various
aspects of how the kinked track signature of the $\Sigma^+ \to p \pi^0$ decay
can be used for this purpose. We evaluate the feasibility of such measurements
in $t\bar t$ samples.
