Revisiting the SUSY mu problem and its solutions in the LHC era

Understand

The supersymmetry preserving mu parameter in SUSY theories is naively expected to be of order the Planck scale while phenomenology requires it to be of order the weak scale.

• This is the famous SUSY mu problem.
• Its solution involves two steps: 1.
• first forbid mu, perhaps via some symmetry, and then 2.