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Search for R-parity violating production of single sneutrinos in e+ e- collisions at s**(1/2) = 189-GeV to 209-GeV

Research output: Contribution to journalJournal article


Journal publication date09/2002
JournalEuropean Physical Journal C: Particles and Fields
Number of pages12
Original languageEnglish


A search for single sneutrino production under the assumption that R-parity is violated via a single dominant LLE¯ coupling is presented. This search considers the process eγ→ν~ℓ 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 LLE¯ couplings are given as a function of the assumed sneutrino mass.