Speaker
Silvia Davoli
(PR)
Description
We consider massive scattering amplitudes on the Coulomb branch of N = 4 SYM theory, obtained by giving a general vacuum expectation value to the scalars fields of the theory. Dual conformal invariance is still present in four-point amplitudes and the generalized cusp anomalous dimension characterizes its planar IR divergencies. The angle theta measures the relative orientation for Coulomb branch expectation values associated to pairs of external W-bosons. We check explicitly at three-loop the expected expression of the cusp anomalous dimension. Furthermore, using Regge theory and dual conformal invariance, we discuss bound states of W-bosons as functions of theta, both at weak and strong coupling.
Primary authors
Luca Griguolo
(PR)
Marisa Bonini
(PR)
Silvia Davoli
(PR)
