Decay chains

As the production of s-quarks and gluinos is favored if kinematically allowed, these particles would start the decay chain in most cases. In the case in which such superparticles were relatively light, the decay chain would be short, and the subsequent possible decays should be few. Instead, if s-quarks and gluinos were very massive, it … Continue reading Decay chains

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Local Supersymmetry

As already seen, the MSSM contains a high number of degrees of freedom. The impossibility to have guidelines on how build a theory leads to models that consider the Supersymmetry as a local symmetry spontaneously broken at different scales with respect to the weak one. Among these, the gravity mediated Supersymmetry breaking theories (or briefly SUperGRAvity, … Continue reading Local Supersymmetry

Supersymmetry Breaking

Supersymmetry in the equation for the MSSM Lagrangian is an exact symmetry. This implies the mass degeneration for the components of each supermultiplet. Anyway, if the superparticles had the same masses of the respective particles, they would have already been observed and the Supersymmetry should therefore be broken. Although it is widely believed that a … Continue reading Supersymmetry Breaking