  The Higgs-like excitations, which distinguish from the Higgs amplitude mode
in many-body system, are single-particle excitations in system with non-Abelian
gauge potential. We investigate the Higgs-like excitations of cold atom system
in artificial non-Abelian gauge potential. We demonstrate that when a
non-Abelian gauge potential is reduced to Abelian potential, its Abelian part
constructs spin-orbit coupling, and its non-Abelian part emerges Higgs-like
excitations. The Higgs-like excitations induce a mass of the non-Abelian gauge
field, which offsets the defect of massless of the gauge theories. We show that
the mass of gauge field can affect the spin Hall currents which are produced by
the spin-orbit coupling. We also discuss the observation of these phenomena in
real experiment.
