N = 1 supersymmetric Yang–Mills theory
In theoretical physics, more specifically in quantum field theory and supersymmetry, supersymmetric Yang–Mills, also known as super Yang–Mills and abbreviated to SYM, is a supersymmetric generalization of Yang–Mills theory, which is a gauge theory that plays an important part in the mathematical formulation of forces in particle physics. It is a special case of 4D N = 1 global supersymmetry.
Source: Wikipedia — N = 1 supersymmetric Yang–Mills theory (CC BY-SA 4.0)