  We investigate the possible role of linearly polarized gluons in Higgs
production from unpolarized pp collisions. The transverse momentum distribution
of the produced Higgs boson is found to exhibit a modulation with respect to
the naive, unpolarized expectation, with the sign depending on the parity of
the Higgs boson. The transverse momentum distribution of a scalar Higgs will,
therefore, have a shape clearly different from a pseudoscalar Higgs. We suggest
that this effect can be used to determine the parity of the Higgs at the LHC,
without the need to use challenging angular distributions.
