Search for anomalous production of multilepton events in <script type="math/tex">p\overline{p}</script> collisions at <script type="math/tex">\sqrt{s}</script>=1.96 TeV

Abulencia, A.; Van Remortel, N.; et al.

doi:10.1103/PHYSREVLETT.98.131804

Publication

Title

Search for anomalous production of multilepton events in $p\overline{p}$ collisions at $\sqrt{s}$ =1.96 TeV

Author

Abulencia, A.

Van Remortel, N.

et al.

Institution/Organisation

CDF Collaboration

Abstract

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.

Language

English

Source (journal)

Physical review letters. - New York, N.Y., 1958, currens

Publication

New York, N.Y. : American Physical Society , 2007

ISSN

0031-9007 [print]

1079-7114 [online]

Volume/pages

98 :13 (2007) , p. 131804,1-131804,7

ISI