  Small-x divergences of Abelian gauge theory in the front form of Hamiltonian
dynamics are regulated using a mass parameter for gauge bosons, introduced
through a mechanism analogous to the spontaneous breaking of global gauge
symmetry. A corresponding family of ultraviolet and infrared finite
scale-dependent renormalized Hamiltonians, is calculable order-by-order using
the renormalization group procedure for effective particles. The second-order
terms described here suggest the magnitude of mass corrections that may be
involved in resolving the small-x parton and front-form vacuum and zero-mode
problems, assuming that the gauge boson mass that counts does not exceed the
current upper bound on the photon mass.
