  A search for the resonant production of high mass photon pairs associated
with a leptonic or hadronic system has been performed using a data sample of
57.7 pb-1 collected at an average center-of-mass energy of 182.6 GeV with the
OPAL detector at LEP. No evidence for contributions from non-Standard Model
physics processes was observed. The observed candidates are used to place
limits on BR (H to gamma gamma) assuming a Standard Model production rate for
Higgs boson masses up to 92 GeV, and on the production cross section for a
scalar resonance decaying into di-photons up to a mass of 170 GeV. Upper limits
on the product of cross section and branching ratios, sigma(e+e- to XY) * BR(X
to gamma gamma) * BR(Y to f fbar) as low as 70fb are obtained over the M(X)
range 10 - 170 GeV for the case where 10 < M(Y) < 160 GeV and M(X)+M(Y) > 90
GeV, independent of the nature of Y provided it decays to a fermion pair and
has negligible width. Higgs scalars which couple only to gauge bosons at
Standard Model strength are ruled out up to a mass of 90.0 GeV at the 95%
confidence level. Limits are also placed on non-minimal Higgs sectors having
triplet representations.
