Search for Supersymmetry with a dominant R-Parity violating LLĒ Coupling in e + e − Collisions at centre-of-mass energies of 130 GeV to 172 GeV The ALEPH Collaboration

A search for pair-production of supersymmetric particles under the assumption that R-parity is violated via a dominant LLĒ coupling has been performed using the data collected by ALEPH at centre-of-mass energies of 130–172GeV. The observed candidate events in the data are in agreement with the Standard Model expectation. This is translated into lower limits on the mass of charginos, neutralinos, sleptons, sneutrinos and squarks. For instance, charginos with masses less than 73GeV/c2 and neutralinos with masses less than 23GeV/c2 are excluded at 95% confidence level for any generation structure of the LLĒ coupling, and for neutralino, slepton or sneutrino LSPs. Submitted to Zeitschrift für Physik C ——————————————– ) See next pages for the list of authors