l-Plane and Khuri-Plane Singularities in the Veneziano Model

The singularity structure of the Veneziano model in the angular momentum and Khuri planes is discussed. The continued partial-wave amplitude is shown to have an infinite number of Regge poles, spaced by integers, together with an infinite number of fixed poles at wrong-signature nonsense points in the $l$ plane. The residues of both the moving and fixed poles are calculated, and consequences of their structure are discussed. In the Khuri plane, the Veneziano model is shown to be characterized by an infinite number of moving poles, but there are no fixed poles. The residues of the moving poles are presented.