One model of this contains the important parameter denoted tan(beta), which is the ratio of "v sub u" to "v sub d."  
One model of this contains the important parameter denoted tan(beta), which is the ratio of "v sub u" to "v sub d."  This theory may be broken by gravity mediation or by gauge mediation.  This theory was shown to be possible by Haag, Lopuszanski, and Sohnius, who showed that the Poincare algebra could be extended.  This theory can cancel out the quadratic divergences in the mass of the Higgs, thus solving the hierarchy problem, and if one adds R-parity conservation to this theory, it predicts a dark matter candidate, usually called the neutralino.  FTP, winos, binos, sleptons, and squarks are particles in this unconfirmed theory that predicts that every fermion contains a boson partner, and vice-versa.
One model of this contains the important parameter denoted tan(beta), which is the ratio of "v sub u" to "v sub d."  
{Supersymmetry}  or {SUSY} (pronounced like the girl's name)