Search for a High-Mass Diphoton State and Limits on Randall-Sundrum Gravitons at CDF

Details Search for a High-Mass Diphoton State and Limits on Randall-Sundrum Gravitons at CDF Search for a High-Mass Diphoton State and Limits on Randall-Sundrum Gravitons at CDF

2007-07-16

arxiv.org/abs/0707.2294v2

Phys.Rev.Lett.99:171801,2007

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.99.171801

We have performed a search for new particles which decay to two photons using 1.2/fb of integrated luminosity from p-pbar collisions at sqrt(s) = 1.96 TeV collected using the CDF II Detector at the Fermilab Tevatron. We find the diphoton mass spectrum to be in agreement with the standard model expectation, and set limits on the cross section times branching ratio for the Randall-Sundrum graviton, as a function of diphoton mass. We subsequently derive lower limits for the graviton mass of 230 GeV/c2 and 850 GeV/c2, at the 95% confidence level, for coupling parameters (k/M_Pl) of 0.01 and 0.1 respectively.

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