Search for neutralino pair production at sqrt(s) = 189 GeV

Abreu, P.;Cortina Gil, Eduardo;DELPHI Collaboration;et.al.
(2001) European Physical Journal C. Particles and Fields — Vol. 19, p. 201-212 (2001)

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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-section and excludes regions in the parameter space of the Minimal Supersymmetric Standard Model (MSSM).
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (2001). Search for neutralino pair production at sqrt(s) = 189 GeV. European Physical Journal C. Particles and Fields, 19, 201-212. https://doi.org/10.1007/s100520100615 (Original work published 2001)