DOI 10.1007/s100520000334
Search for supersymmetry with R-parity violating
couplings at
GeV
The DELPHI Collaboration
P.Abreu21 - et al.
21 LIP, IST, FCUL - Av. Elias Garcia, 14-1o,
1000 Lisboa Codex, Portugal
Received: 6 April 1999 / Published online: 25 February 2000 - © Springer-Verlag 2000
Abstract
Searches for pair production of supersymmetric particles
in e+e- collisions at centre-of-mass energy of
183 GeV have been performed on DELPHI data
under the assumption that R-parity is not conserved.
Only one R-parity violating coupling of 
type,
which couples the sleptons to the leptons
(
term), is considered
to be dominant at a time. Since in models with R-parity violation
any supersymmetric particle can be the lightest one,
searches for charginos, neutralinos, sleptons and squarks
have been performed both for direct R-parity violating decays
and for indirect cascade decays.
Morever, it is assumed that the strength of the R-parity
violating couplings is such that the lifetimes can be neglected.
The present study of supersymmetric particle pair production is used
to exclude domains of the Minimal Supersymmetric Standard Model
parameter space previously explored under
the assumption of R-parity conservation.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
