2024 Impact factor 4.8
Particles and Fields
Eur. Phys. J. C 13, 681-690
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