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

Heister, A.; Schael, S.; Barate, R.; Bruneliere, R.; De Bonis, I.; Decamp, D.; Goy, C.; Jezequel, S.; Lees, J.P.; Martin, F.

doi:10.1007/s10052-002-1010-2

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

ALEPH

Collaboration

Jan, 2002

22 pages

Published in:

Eur.Phys.J.C 25 (2002) 1-12

e-Print:

hep-ex/0201013 [hep-ex]

DOI:

10.1007/s10052-002-1010-2

Report number:

CERN-EP-2001-094

Experiments:

CERN-LEP-ALEPH

View in:

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Abstract: (arXiv)

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{\to}}} \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

\mathrm{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.

Note:

22 pages, 14 figures Report-no: CERN-EP/2001-094

electron positron: colliding beams
photon electron: exclusive reaction
sparticle: search for
sneutrino: electroproduction
sneutrino: decay modes
R parity: violation
sparticle: coupling
mass dependence
upper limit
electroweak interaction: validity test

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