Elsevier

Nuclear Physics B

Volume 288, 1987, Pages 95-130
Nuclear Physics B

High-energy, large-momentum-transfer processes: Ladder diagrams in ϕ3 theory (II)

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Abstract

The scattering amplitude for the four-rung ladder diagram in ϕ3 theory is evaluated at high energies and for large momentum transfers. The result takes the form of s−1|t|−3 multiplied by a homogeneous sixth-order polynomial in ln s and ln|t| is larger or less than 12ln s. Thus the asymptotic formula is not analytic at ln|t| = 12ln s, although the first five derivatives are continuous.

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