Eur. Phys. J. C 19, 201-212
DOI: 10.1007/s100520100615
Search for neutralino pair production at 
= 189 GeV
The DELPHI Collaboration P. Abreu and et al. LIP, IST, FCUL - Av. Elias Garcia, 14-1o, 1000 Lisboa Codex, Portugal
(Received: 22 November 2000 / Revised version: 11 January 2001 / Published online: 15 March 2001 -© Springer-Verlag 2001)
Abstract
A search for pair-production of neutralinos at a LEP
centre-of-mass energy of 189 GeV gave no evidence for
a signal.
This limits the neutralino production cross-sec tion
and excludes regions in the parameter space of the
Minimal Supersymmetric Standard Model (MSSM).
© Società Italiana di Fisica, Springer-Verlag 2001
