2011

Massive amplitudes on the Coulomb branch of N=4 SYM

Craig, Nathaniel, Elvang, Henriette, Kiermaier, Michael et al.

Understand

We initiate a systematic study of amplitudes with massive external particles on the Coulomb-branch of N=4 super Yang Mills theory: 1) We propose that (multi-)soft-scalar limits of massless amplitudes at the origin of moduli space can be used to determine Coulomb-branch amplitudes to leading order in the mass.

This is demonstrated in numerous examples.
2) We find compact explicit expressions for several towers of tree-level amplitudes, including scattering of two massive W-bosons with any number of positive helicity gluons, valid for all values of the mass.
3) We present the general structure of superamplitudes on the Coulomb branch.

Built on

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