  We report the first complete calculation of QCD corrections to the production
of a massive color-octet vector boson. Our next-to-leading-order (NLO)
calculation includes both virtual corrections as well as corrections arising
from the emission of gluons and light quarks, and we demonstrate the reduction
in factorization-scale dependence relative to the leading-order approximation
used in previous hadron collider studies. We show that the QCD NLO corrections
to coloron production are as large as 30%, and that the residual factorization
scale-dependence is reduced to of order 2%. We also calculate the K-factor and
the p_T spectrum for coloron production, since these are valuable for
comparison with experiment. Our results apply directly to the production of the
massive color-octet vector bosons in axigluon, topcolor, and coloron models,
and approximately to the production of KK gluons in extra-dimensional models or
color-octet technivector mesons in technicolor models.
