  We propose the action of d=4 Anti-de Sitter (AdS) spinning particle with
arbitrary fixed quantum numbers. Regardless of the spin value, the
configuration space of the model is a direct product of d=4 AdS space and
two-dimensional sphere corresponds to spinning degrees of freedom. The model is
an AdS counterpart of the massive spinning particle in the Minkowski space
proposed earlier. Being AdS-invariant, the model possesses two gauge symmetries
implying identical conservation law for AdS-counterparts of mass and spin. Two
equivalent forms of the action functional, minimal and manifestly covariant,
are given.

High Energy Physics - Theory