Editing R-parity (section)

==Dark matter candidate==
With R-parity being preserved, the lightest supersymmetric particle ([[Lightest Supersymmetric Particle|LSP]]) cannot decay. This lightest particle (if it exists) may therefore account for the observed missing mass of the universe that is generally called [[dark matter]].<ref>
{{cite journal
 |last1=Jungman |first1=G.
 |last2=Kamionkowski |first2=M.
 |last3=Griest |first3=K.
 |date=1996
 |title=Supersymmetric dark matter
 |journal=Physics Reports
 |volume=267 |issue=5–6 |pages=195–373
 |doi=10.1016/0370-1573(95)00058-5
 |arxiv=hep-ph/9506380
 |bibcode=1996PhR...267..195J
 |s2cid=119067698
}}</ref> In order to fit observations, it is assumed that this particle has a mass of {{val|100|ul=GeV/c2}} to {{val|1|ul=TeV/c2}}, is neutral and only interacts through [[weak interaction]]s and [[Gravitation|gravitational interactions]]. It is often called a [[weakly interacting massive particle]] or WIMP.

Typically the dark matter candidate of the MSSM is a mixture of the electroweak [[gaugino]]s and [[Higgsino]]s and is called a [[neutralino]]. In extensions to the MSSM it is possible to have a [[sneutrino]] be the dark matter candidate. Another possibility is the [[gravitino]], which only interacts via [[Gravitation|gravitational interactions]] and does not require strict R-parity.