We report on a search for new particles in the diphoton
channel using a data sample of p anti-p collisions at s**(1/2) ñ.96
TeV collected by the CDF II detector at the Fermilab Tevatron, with
an integrated luminosity of 5.4 fb-1. The diphoton invariant mass
spectrum of the data agrees well with the standard model expectation.
We set upper limits on the production cross section times branching
ratio for the Randall-Sundrum graviton, as a function of diphoton mass.
We subsequently derive lower limits on the graviton mass of 459 GeV/c2
and 963 GeV/c2, at the 95% confidence level, for coupling parameters
(k/M-bar_pt) of 0.01 and 0.1 respectively.
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Updated: Wednesday, 2011 January 19 14:10:15 CST automatically from input from Carol Picciolo