1999/04/14 by G. Abbiendi, The OPAL Collaboration, G. Abbiendi et al · 3 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Nuclear physics research studies #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1007/s100529900226
published as Eur.Phys.J.C12:1-24,2000 · 50 pages, LaTeX, including 22 eps figures, submitted to European Physical Journal C
arxiv created 1999/04/14 · openalex publication_date 2000/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
A search for pair produced scalar fermions with couplings that violate R-parity has been performed using a data sample corresponding to an integrated luminosity of 56 pb-1 at a centre-of-mass energy of sqrts= 183 GeV collected with the OPAL detector at LEP. An important consequence of R-parity breaking interactions is that the lightest supersymmetric particle is expected to be unstable. Searches for R-parity violating decays of charged sleptons, sneutrinos and stop quarks have been performed under the assumptions that the lightest supersymmetric particle decays promptly and that only one of the R-parity violating couplings is dominant for each of the decay modes considered. Such processes would yield multi-leptons, jets plus leptons or multi-jets, with or without missing energy, in the final state. No significant excess of such events has been observed. Limits on the production cross-sections of scalar fermions in R-parity violating scenarios are obtained. Mass exclusion regions are also presented in the framework of the Constrained Minimal Supersymmetric Standard Model.