EPJ

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EPJ C - Particles and Fields
Particles and Fields


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 $\sqrt{s}$ = 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 $LL\bar{E}$ coupling is presented. This search considers the process ${\rm e} \gamma \;{\smash{\mathop{\rightarrow}}}\;\tilde{\nu}\ell$ 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 $LL\bar{E}$ couplings are given as a function of the assumed sneutrino mass.



© Società Italiana di Fisica, Springer-Verlag 2002

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