2018 Impact factor 4.843
Particles and Fields


Eur. Phys. J. C 19, 415-428
DOI: 10.1007/s100520100633

Search for R-parity violating decays of supersymmetric particles in e+e- collisions at centre-of-mass energies from 189 GeV to 202 GeV

The ALEPH Collaboration R. Barate and et al.

Laboratoire de Physique des Particules (LAPP), IN$^{2}$P$^{3}$-CNRS, 74019 Annecy-le-Vieux Cedex, France

(Received: 26 October 2000 / Published online: 23 March 2001 -© Springer-Verlag 2001)

Abstract
Searches for the production of supersymmetric particles under the assumption that R-parity is violated via a single dominant $LL{\bar E}$, $LQ{\bar D}$ or ${\bar U} {\bar D} {\bar D}$ coupling were performed. These use the data collected by the ALEPH detector at LEP at centre-of-mass energies from 188.6 to 201.6 GeV. The numbers of candidate events observed in the data are consistent with Standard Model expectations. Upper limits on the production cross sections and lower limits on the masses of charginos, sleptons, squarks and sneutrinos are derived.



© Società Italiana di Fisica, Springer-Verlag 2001