Eur. Phys. J. C 25, 1-12 (2002)
DOI: 10.1007/s10052-002-01010-2
Search for
R-parity violating production of single sneutrinos
in
e+e- collisions at
= 189-209 GeV
The ALEPH Collaboration (Received: 19 December 2001 / Published online: 26 July 2002 )
Abstract
A search for single sneutrino production under the assumption that
R-parity is violated via a single dominant
coupling is
presented. This search considers the process
and is performed using the data collected by the ALEPH detector at
centre-of-mass energies from 189 GeV up to 209 GeV corresponding
to an integrated luminosity of 637.1
pb-1.
The numbers of observed candidate events
are in agreement with Standard Model expectations
and 95% confidence level upper limits on five of the
couplings
are given as a function of the assumed sneutrino mass.
© Società Italiana di Fisica, Springer-Verlag 2002