DOI 10.1007/s100520000258
Topologies of the (M+1)SSM with a singlino LSP at LEP2
U. Ellwanger - C. Hugonie
Laboratoire de Physique Théorique et Hautes
Energies,
Université de Paris XI, Centre d'Orsay, 91405 Orsay Cedex,
France
Received: 15 January 1999
/ Revised version: 20 May 1999
/
Published online: 17 March 2000
- © Springer-Verlag 2000
Abstract
We study the possible signals
of the (M+1)SSM with a singlino
LSP at LEP2.
First we identify regions of the parameter space which are ruled
out by
negative results of sparticle searches in the context of the
MSSM. In the
remaining kinematically accessible regions we present total event
rates for
topologies which require further studies, i.e. estimations of
the corresponding
efficiencies: various four charged fermion final states with missing
energy,
possibly with displaced vertices due to a long life time of the
NLSP, the second
lightest neutralino. Searches for these unconventional signatures
are essential
in order to cover the entire kinematically accessible parameter
space of the
(M+1)SSM with a singlino LSP at LEP2.
Copyright Società Italiana di Fisica, Springer-Verlag 2000