Models of Scherk–Schwarz symmetry breaking in 5d: classification and calculability Original Research Article

The form of the most general orbifold breaking of gauge, global and supersymmetries with a single extra dimension is given. In certain theories the Higgs boson mass is ultraviolet finite due to an unbroken local supersymmetry, which is explicitly exhibited. We construct: a 1 parameter SU(3)×SU(2)×U(1) theory with 1 bulk Higgs hypermultiplet, a 2 parameter SU(3)×SU(2)×U(1) theory with 2 bulk Higgs hypermultiplets, and a 2 parameter SU(5)→SU(3)×SU(2)×U(1) theory with 2 bulk Higgs hypermultiplets, and demonstrate that these theories are unique. We compute the Higgs mass and compactification scale in the SU(3)×SU(2)×U(1) theory with 1 bulk Higgs hypermultiplet.