We show that in the massless N=1 supersymmetric Wess-Zumino theory it is possible to devise a computational strategy by which the x-space calculation of the ladder 4-point correlators can be carried out without introducing any regularization. As an application we derive a representation valid at all loop orders in terms of conformal invariant integrals. We obtain an explicit expression of the 3-loop ladder diagram for collinear external points.
Rossi, G., Stanev, Y. (2009). The Massless supersymmetric ladder with L rungs. NUCLEAR PHYSICS. B, 807, 534-546 [10.1016/j.nuclphysb.2008.07.030].
The Massless supersymmetric ladder with L rungs
ROSSI, GIANCARLO;
2009-01-01
Abstract
We show that in the massless N=1 supersymmetric Wess-Zumino theory it is possible to devise a computational strategy by which the x-space calculation of the ladder 4-point correlators can be carried out without introducing any regularization. As an application we derive a representation valid at all loop orders in terms of conformal invariant integrals. We obtain an explicit expression of the 3-loop ladder diagram for collinear external points.File in questo prodotto:
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