Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-12-13
Phys.Rev.D83:011102,2011
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 4 figures, submitted to Phys.Rev.D. Rapid Communications
Scientific paper
10.1103/PhysRevD.83.011102
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.
Aaltonen Timo
CDF Collaboration
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