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

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

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[s...

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Bibliographic Details
Main Authors: Makhoul, K. (Contributor), Knuteson, Bruce O. (Contributor), Henderson, C. (Contributor), Hahn, Kristian Allan (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Choudalakis, Georgios (Contributor), Bauer, Gerry P. (Contributor), Xie, Si (Contributor), Paus, Christoph M. E. (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2010-02-21T16:15:05Z.
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Summary: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.
Academy of Finland
Slovak R&D Agency
Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain
Russian Foundation for Basic Research
Institut National de Physique Nucleaire et Physique des Particules/CNRS
Science and Technology Facilities Council and the Royal Society, UK
Korean Science and Engineering Foundation and the Korean Research Foundation
Bundesministerium für Bildung und Forschung, Germany
A. P. Sloan Foundation
Swiss National Science Foundation
National Science Council of the Republic of China
Natural Sciences and Engineering Research Council of Canada
Ministry of Education, Culture, Sports, Science and Technology of Japan
Italian Istituto Nazionale di Fisica Nucleare
National Science Foundation
U.S. Department of Energy

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