# Tag Info

Not only must supersymmetry be broken, it must be broken in a way that doesn't lead to phenomenological disasters. In the MSSM, $D$-term breaking with a Fayet-Iliopoulos term achieves neither: it doesn't break supersymmetry but it does lead to phenomenological disasters! Consider again your potential  \begin{align} V&=\sum_i |m_i|^2 |\phi_i|^2 +1/2 ...