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We argue that the theory of a massive higher spin field coupled toelectromagnetism in flat space possesses an intrinsic, model independent,finite upper bound on its UV cutoff. By employing the Stueckelberg formalism wedo a systematic study to quantify the degree of singularity of the masslesslimit in the cases of spin 2, 3, 3/2, and 5/2. We then generalize the resultsfor arbitrary spin to find an expression for the maximum cutoff of the theoryas a function of the particle's mass, spin, and electric charge. We alsobriefly explain the physical implications of the result and discuss how itcould be sharpened by use of causality constraints.

A Model Independent Ultraviolet Cutoff for Theories with Charged Massive Higher Spin Fields