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Phys. Rev. Lett. 99, 171802 (2007) [7 pages]

Search for New Physics in High-Mass Electron-Positron Events in pp̅ Collisions at s=1.96  TeV

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T. Aaltonen et al. CDF Collaboration
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Received 18 July 2007; published 22 October 2007

We report the results of a search for a narrow resonance in electron-positron events in the invariant mass range of 150–950  GeV/c2 using 1.3  fb-1 of pp̅ collision data at s=1.96  TeV collected by the CDF II detector at Fermilab. No significant evidence of such a resonance is observed and we interpret the results to exclude the standard-model-like Z with a mass below 923  GeV/c2 and the Randall-Sundrum graviton with a mass below 807  GeV/c2 for k/M̅ pl=0.1, both at the 95% confidence level. Combining with diphoton data excludes the Randall-Sundrum graviton for masses below 889  GeV/c2 for k/M̅ pl=0.1.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.171802
DOI:
10.1103/PhysRevLett.99.171802
PACS:
13.85.Rm, 04.50.+h, 13.85.Qk, 14.70.Pw