The box diagram in Yukawa theory

Details The box diagram in Yukawa theory The box diagram in Yukawa theory

2006-10-30

arxiv.org/abs/hep-th/0610309v1

Phys.Rev.D75:065010,2007

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 17 figures. submittes to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.75.065010

We present a light-front calculation of the box diagram in Yukawa theory. The covariant box diagram is finite for the case of spin-1/2 constituents exchanging spin-0 particles. In light-front dynamics, however, individual time-ordered diagrams are divergent. We analyze the corresponding light-front singularities and show the equivalence between the light-front and covariant results by taming the singularities.

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