Search for Chargino-Neutralino Associated Production at the Fermilab Tevatron Collider

F. Abe, H. Akimoto, A. Akopian, M. G. Albrow, A. Amadon, S. R. Amendolia, D. Amidei, J. Antos, S. Aota, G. Apollinari, T. Arisawa, T. Asakawa, W. Ashmanskas, M. Atac, P. Azzi-Bacchetta, N. Bacchetta, S. Bagdasarov, M. W. Bailey, P. de Barbaro, A. Barbaro-GaltieriV. E. Barnes, B. A. Barnett, M. Barone, G. Bauer, T. Baumann, F. Bedeschi, S. Behrends, S. Belforte, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. P. Berge, J. Berryhill, S. Bertolucci, S. Bettelli, B. Bevensee, A. Bhatti, K. Biery, C. Bigongiari, M. Binkley, D. Bisello, R. E. Blair, C. Blocker, S. Blusk, A. Bodek, W. Bokhari, G. Bolla, D. Cronin-Hennessy, University of Toronto, Toronto M5S 1A7, Canada

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


We have searched in p p̄ collisions at √s = 1.8 TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino (χ̃1±χ̃20) pair production, with subsequent decay into leptons. We observe no candidate e+e-e±, e+e-μ±, e+μl+μ-, or μ+μ μ± events in 106 pb-1 integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: σχ̃1±χ̃2 0B(χχ̃1± χ̃20 → 3ℓ + X) < 0.34 pb, Mχ̃1± > 81.5 GeV/c2, and Mχ̃20 > 82.2 GeV/c2 for tan β= 2, μ = -600 Gev/C2, and M = M.

Original languageEnglish (US)
Pages (from-to)5275-5280
Number of pages6
JournalPhysical review letters
Issue number24
StatePublished - 1998


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