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\section{\usemenu{slacpub7099::context::slacpub7099005}{Conclusions}}\label{section::slacpub7099005}
We have measured distributions of the jet energies, and of the
orientation angles
of the event plane, in \ep \ra \z0 \ra threejet events recorded in the
SLD experiment at slac.
Our measurements of these quantities are consistent with those from
other experiments
\cite{4,5,7} at the \z0 resonance.
We have compared our measurements with QCD predictions and with models
of strong interactions incorporating scalar or tensor gluons; this
represents the first comparison with a tensor gluon calculation.
The leadingorder vector gluon (QCD) calculation describes the basic
shape of the scaled jet energy
distributions, and addition of higherorder perturbative
contributions leads to a reasonable description of the finer details of
these distributions, provided the regions of phase space are avoided
where soft and collinear singularities need to be resummed.
One may speculate that the
addition of as yet uncalculated higherorder QCD
contributions may yield further improvement. The shapes of the
jet energy distributions cannot be described by leadingorder
models incorporating either scalar or tensor gluons alone.
However, the {\it ad hoc} addition
of leadingorder contributions from scalar and tensor gluons,
each with arbitrary relative weight, to the
QCD predictions can also improve the description of the data;
even for the QCD parton shower calculations slightly better fit
qualities are obtained with such contributions included.
The allowed relative contributions of scalar and tensor gluons depend
upon the order of the vector calculation, as well as the observable;
the smallest allowed
contribution of 0.1\% for both scalar and tensor gluons
is obtained with the HERWIG parton shower fit to the scaled energy of
the most energetic jet.
The event plane orientation angles are well described by $\Oa$ QCD
and higherorder corrections are small. These quantities
are less sensitive to the gluon spin than the jet energies, but the
data disfavor the scalar and tensor hypotheses.
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