We report the result of a search for scaler leptons in e(+)e(-)collisions a
t 183 GeV centre-of-mass energy at LEP. No evidence for such particles is f
ound in a data sample of 55.2 pb(-1). improved upper limits are set on the
production cross-sections for stable as well as unstable scalar leptons, Ne
w exclusion contours in the parameter space of the Minimal Supersymmetric S
tandard Model are derived, as well as new lower limits on scalar lepton mas
ses. (C) 1999 Published by Elsevier Science B.V. All rights reserved.