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We make a careful re-examination of the possibility that, in a U(1) extensionof the Standard Model, the extra Z' boson may acquire a mass from aStueckelberg-type scalar. The model, when all issues of theoretical consistencyare taken into account, contains several attractive new features, including ahigh degree of predictability.

A viable U(1) extended Standard Model with a massive Z' invoking the Stueckelberg mechanism