Orbifold breaking of 3–3–1 model

We study the five-dimensional SU(3)c×SU(3)L×U(1)X gauge theory (3–3–1 model) in which the gauge symmetry is broken down through orbifold compactification to four dimensions. The new model has several distinguishing features compared to the usual four-dimensional model. We develop the formalism, and give expressions for the gauge boson masses, mixings and their couplings to the fermions. Phenomenology of the model is briefly studied.