# Search for Anomalous Production of Multilepton Events in $p\barp$ Collisions at $\sqrt{s}$=1.96 TeV

Abstract : We report a search for the anomalous production of events with multiple charged leptons in p anti-p collisions at s**(1/2) = 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 thre+ e-lepton and four-or-more-lepton data samples. We observe six events in the thre+ e-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 (chi-bar0_1) and chargino (chi-bar+/-_1) particles. For one particular choice of model parameters, the limits are M(chi-bar0_1)>110 GeV/c2 and M(chi(b)ar+/-_1)>203 GeV/c2 at 95% confidence level; the variation of these mass limits with model parameters is presented.
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Journal articles

Cited literature [13 references]

http://hal.in2p3.fr/in2p3-00147191
Contributor : Dominique Girod <>
Submitted on : Wednesday, May 16, 2007 - 10:24:31 AM
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### Citation

A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, et al.. Search for Anomalous Production of Multilepton Events in $p\barp$ Collisions at $\sqrt{s}$=1.96 TeV. Physical Review Letters, American Physical Society, 2007, 98, pp.131804. ⟨10.1103/PhysRevLett.98.131804⟩. ⟨in2p3-00147191⟩

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