Search for Randall-Sundrum Gravitons in the Diphoton Channel at CDF

Abstract

We report on a search for new particles in the diphoton channel using a data sample of $p\bar{p}$ collisions at $\sqrt{s}=1.96$ 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$/c^2$ and 963 GeV$/c^2$, at the 95% confidence level, for coupling parameters ($k/{\bar{M}}_{Pl}$) of 0.01 and 0.1 respectively.

arXiv comment8 pages, 4 figures, submitted to Phys.Rev.D. Rapid Communications

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• Search for New Dielectron Resonances and Randall-Sundrum Gravitons at the Collider Detector at Fermilab
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