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Search for High-Mass e+e- Resonances in pp-bar Collisions at sqrt[s]=1.96 TeV

Author(s)
Knuteson, Bruce O.; Henderson, C.; Hahn, Kristian Allan; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Xie, Si; Paus, Christoph M. E.; Makhoul, Khaldoun; Bauer, Gerry P; ... Show more Show less
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Abstract
A search for high-mass resonances in the e[superscript +]e[superscript -] final state is presented based on 2.5  fb[superscript -1] of √s=1.96  TeV pp̅ collision data from the CDF II detector at the Fermilab Tevatron. The largest excess over the standard model prediction is at an e[superscript +]e[superscript -] invariant mass of 240  GeV/c[superscript 2]. The probability of observing such an excess arising from fluctuations in the standard model anywhere in the mass range of 150–1000  GeV/c[superscript 2] is 0.6% (equivalent to 2.5σ). We exclude the standard model coupling Z′ and the Randall-Sundrum graviton for k/M̅ Pl=0.1 with masses below 963 and 848  GeV/c[superscript 2] at the 95% credibility level, respectively.
Date issued
2009-01
URI
http://hdl.handle.net/1721.1/51788
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Search for High-Mass e+e- Resonances in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.3 (2009): 031801. © 2009 The American Physical Society.
Version: Final published version
ISSN
0031-9007

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