Eur. Phys. J. C 19, 397-414
DOI: 10.1007/s100520100608

Search for R-parity violating decays of supersymmetric particles in e⁺e^- collisions at 189 GeV

The L3 Collaboration M. Acciarri and et al.

INFN-Sezione di Milano, 20133 Milan, Italy

(Received: 11 October 2000 / Published online: 23 March 2001 -© Springer-Verlag 2001)

Abstract
A search for chargino, neutralino and scalar lepton pair-production in e⁺e^- collisions at the centre-of-mass energy of 189 GeV is performed under the assumptions that R-parity is not conserved in decays and only one of the coupling constants , or is non-negligible. No signal is found in a data sample corresponding to an integrated luminosity of 176.4 pb^-1. Limits on the production cross sections, on the Minimal Supersymmetric Standard Model parameters and on the masses of the supersymmetric particles are derived.

© Società Italiana di Fisica, Springer-Verlag 2001