Royal Holloway Centre for Particle Physics

Search for R-Parity Decays of Supersymmetric Particles in e+e- Collisions at Centre-of-Mass Energies of s =189GeV
D Hutchcroft
Abstract
Searches for the single and pair-production of supersymmetry particles under the assumption that R-parity is violated via a single dominant LLE, LQDor UDD coupling are performed using the data collected by the ALEPH collaboration at a centre-of-mass energy of 188.6GeV. The observed candidate events in the data are in agreement with the Standard Model expectation, and limits on the production cross-sections and the masses of charginos, sleptons, squarks and sneutrinos are derived.
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contibuted paper at HEP99, Tampere, Finland