High Quality Content by WIKIPEDIA articles! The Minimal Supersymmetric Standard Model (MSSM) is the minimal extension to the Standard Model that realizes supersymmetry, although non-minimal extensions do exist. Supersymmetry pairs bosons with fermions; therefore every Standard Model particle has a partner that has yet to be discovered. If these supersymmetric partners exist, it is likely that they will be observed at the Large Hadron Collider, which began operations in 2009. If the superparticles are found, it is analogous to discovering antimatter and depending on the details of what is found, it could provide evidence for grand unification and might even in principle provide hints as to whether string theory describes nature.