Next-to-Minimal Supersymmetric Standard Model

In particle physics, NMSSM is an acronym for Next-to-Minimal Supersymmetric Standard Model. It is a supersymmetric extension to the Standard Model that adds an additional singlet chiral superfield to the MSSM and can be used to dynamically generate the μ {\displaystyle \mu } term, solving the μ {\displaystyle \mu } -problem.

Source: Wikipedia — Next-to-Minimal Supersymmetric Standard Model (CC BY-SA 4.0)