Abstract
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. © 2007 The American Physical Society.
Original language | English |
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Journal | Physical Review D |
Volume | 75 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2007 |