Search for anomalous production of multi-lepton events in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV - INSPIRE

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Search for anomalous production of multi-lepton events in $p \bar{p}$ collisions at $\sqrt{s}$ = 1.96-TeV

CDF

Collaboration

Jan, 2007

7 pages

Published in:

Phys.Rev.Lett. 98 (2007) 131804

e-Print:

0706.4448 [hep-ex]

DOI:

10.1103/PhysRevLett.98.131804

{{\widetilde{\mathit \chi}}_{{{1}}}^{0}}

(Lightest Neutralino) mass limit

Report number:

FERMILAB-PUB-06-482-E

Experiments:

FNAL-E-0830

View in:

reference search28 citations

Citations per year

Abstract: (arXiv)

We report a search for the anomalous production of events with multiple charged leptons in p-pbar collisions at sqrt{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 and chargino particles. For one particular choice of model parameters, the limits are M_neutralino > 110 GeV/c^{2} and M_chargino > 203 GeV/c^{2} at 95% confidence level/ the variation of these mass limits with model parameters is presented.

Note:

1 revtex file, 3 eps figures, 1 author list, 4 files needed for revtex (for completeness)

13.85.Rm
12.60.Jv
13.85.Qk
14.80.Ly
CDF
anti-p p: colliding beams
lepton: multiple production
lepton: multiplicity
electroweak interaction: standard model
validity test

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Figures(0)

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