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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-Galtieri
  • V. 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

Abstract

We have searched in pp collisions at √s=1.8TeV for events with three charged leptons and missing transverse energy. In the minimal supersymmetric standard model, we expect trilepton events from chargino-neutralino (√± 10 2) pair production, with subsequent decay into leptons. We observe no candidate e+e-e±, e+e-μ±, e±μ+μ-, or μ+μ-μ± events in 106pb-1 integrated luminosity. We present limits on the sum of the branching ratios times cross section for the four channels: σσ ± 1χ0 2B(χ± 1χ0 2→3ℓ+X)<0.34pb, Mχ ± 1 χ81.5GeV/c2, and Mχ 0 2 >82.2GeV/c2 for tan >=2, μ=-600GeV/c2, and Mq=Mg.

Original languageEnglish (US)
Pages (from-to)2650-2654
Number of pages5
JournalPhysical review letters
Volume80
Issue number13
DOIs
StatePublished - 1998

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