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L.N.Lipatov (PNPI)
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Regge pole and Mandelstam cut contributions to production amplitudes in N=4 SUSY
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We investigate analytic properties of production amplitudes in the multi-Regge
kinematics of N=4 SUSY. It turns out, that the well-known approach of Weis for
construction of the Regge pole contributions to the production amplitudes leads to
expressions having non-physical singularities in the physical regions. The
Mandelstam cut contributions improve the analytic properties of these amplitudes