Scientific article
Open access

Search for Anomalous Production of Multilepton Events in pp Collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 98, no. 13, 131804
Publication date2007

We report a search for the anomalous production of events with multiple charged leptons in pp 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 (χ˜01) and chargino (χ˜±1) particles. For one particular choice of model parameters, the limits are M(χ˜01)>110  GeV/c2 and M(χ˜±1)>203  GeV/c2 at 95% confidence level; the variation of these mass limits with model parameters is presented.

Citation (ISO format)
CDF Collaboration. Search for Anomalous Production of Multilepton Events in <em>pp</em> Collisions at s√=1.96  TeV. In: Physical review letters, 2007, vol. 98, n° 13, p. 131804. doi: 10.1103/PhysRevLett.98.131804
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Article (Published version)
ISSN of the journal0031-9007

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