We present results of searches for diphoton resonances produced both inclusively and also in association with a vector boson (W or Z) using 100 pb(-1) of p (p) over bar collisions using the CDF detector. We set upper limits on the product of cross section times branching ratio for both p (p) over bar --> gamma gamma +X and p (p) over bar --> gamma gamma+ W/Z. Comparing the inclusive production to the expectations from heavy sgoldstinos we derive limits on the supersymmetry-breaking scale rootF in the TeV range, depending on the sgoldstino mass and the choice of other parameters. Also. using a NLO prediction for the associated production of a Higgs boson with a W or Z boson, we set an upper limit on the branching ratio for H --> gamma gamma. Finally, we set a lower limit on the mass of a bosophilic Higgs boson (e.g., one which couples only to gamma, W, and Z bosons with standard model couplings) of 82 GeV/c(2) at 95% confidence level.
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