Unitarity constraints on large multiplets of arbitrary gauge groups
Unitarity constraints on large multiplets of arbitrary gauge groups
We impose partial-wave unitarity on $2 \to 2$ tree-level scattering processes to derive constraints on the dimensions of large scalar and fermionic multiplets of arbitrary gauge groups. We apply our results to scalar and fermionic extensions of the Standard Model, and also to the Grand Unified Theories (GUTs) based on …