  An ultraviolet complete particle model is constructed for the observed
particles of the standard model. The quantum field theory associates infinite
derivative entire functions with propagators and vertices, which make quantum
loops finite and maintain Poincar\'e invariance and unitarity of the model. The
electroweak model $SU(2)\times U(1)$ group is treated as a broken symmetry
group with non-vanishing experimentally determined boson and fermion masses. A
spontaneous symmetry breaking of the vacuum by a scalar Higgs field is not
invoked to restore boson and fermion masses to the initially massless
$SU(2)\times U(1)$ Lagrangian of the standard model. The hierarchy naturalness
problem of the Higgs boson mass is resolved and the model contains only
experimentally observed masses and coupling constants. The model can predict a
stable vacuum evolution. Experimental tests to distinguish the standard model
from the alternative model are proposed. The finite quantum field theory can be
extended to quantum gravity.
