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      Multilepton signatures of gauge mediated SUSY breaking at LEPII

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          Abstract

          In the framework of gauge-mediated supersymmetry breaking models pair production of the lightest neutralinos, scalar leptons, or charginos at LEPII gives rise to interesting signals involving multilepton final states and missing energy. In the parameter space where the scalar tau, \(\tilde{\tau}_1\), is the next-to-lightest supersymmetric particle, we identify three interesting regions, which give rise to distinctly different final states: (i) 2 \(\tau\)-leptons plus missing energy, (ii) 4 charged leptons plus missing energy where in some regions all four are \(\tau\)-leptons, or (iii) six charged leptons, of which four are \(\tau\)-leptons and the other two are electrons or muons, plus missing energy. We study in detail the size of these regions in the parameter space of gauge-mediated models and give cross section contours in these regions for various LEPII energies. We also discuss the possibility of chargino-pair production at LEPII.

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          Author and article information

          Journal
          03 November 1997
          1998-06-08
          Article
          10.1103/PhysRevD.58.015008
          hep-ph/9711216
          45ade7c5-a544-4b67-ae51-844f13298adf
          History
          Custom metadata
          UCD-97-24, UTEXAS-HEP-97-21, OITS-639, OSURN-331
          Phys.Rev. D58 (1998) 015008
          Description of three-body decay of selectron and smuon is added and other minor changes. Published version in PRD
          hep-ph

          High energy & Particle physics
          High energy & Particle physics

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