Search for Randall-Sundrum gravitons in the diphoton channel at CDF
We report on a search for new particles in the diphoton channel using a data sample of pp̅ collisions at √s=1.96 [square root of s-1.96] TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 5.4 fb-1 [fb superscript -1]. The diphoton invariant mass spectru...
Main Authors: | , , , , |
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Other Authors: | , |
Format: | Article |
Language: | English |
Published: |
American Physical Society,
2011-05-20T20:42:46Z.
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Subjects: | |
Online Access: | Get fulltext |
Summary: | We report on a search for new particles in the diphoton channel using a data sample of pp̅ collisions at √s=1.96 [square root of s-1.96] TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 5.4 fb-1 [fb superscript -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 [GeV/c superscript 2]and 963 GeV/c2 GeV/c superscript 2], at the 95% confidence level, for coupling parameters (k/M̅ Pl) [k/M̅ subscript P1] of 0.01 and 0.1, respectively. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation |
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