Title
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Search for anomalous production of multilepton events in collisions at =1.96 TeV
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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We report a search for the anomalous production of events with multiple charged leptons in pp̅ collisions at √s=1.96 TeV using a data sample corresponding to an integrated luminosity of 346 pb-1 collected by the CDF II detector at the Fermilab Tevatron. The search is divided into three-lepton and four-or-more-lepton data samples. We observe six events in the three-lepton sample and zero events in the ≥4-lepton sample. Both numbers of events are consistent with standard model background expectations. Within the framework of an R-parity-violating supergravity model, the results are interpreted as mass limits on the lightest neutralino (χ10) and chargino (χ1±) particles. For one particular choice of model parameters, the limits are M(χ10)>110 GeV/c2 and M(χ1±)>203 GeV/c2 at 95% confidence level; the variation of these mass limits with model parameters is presented. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
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2007
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ISSN
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0031-9007
[print]
1079-7114
[online]
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Volume/pages
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98
:13
(2007)
, p. 131804,1-131804,7
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ISI
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000245331500022
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Full text (Publisher's DOI)
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Full text (open access)
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