6 papers
Multi-Loop Negative Geometries
Lance J. Dixon, Umut Oktem, Shruti Paranjape +3
Scattering amplitudes in planar supersymmetric Yang-Mills theory are dual to expectation values of null polygonal Wilson loops. The Amplituhedron provides a geometric…
A Two-Loop Four-Point Form Factor at Function Level
Lance J. Dixon, Shuo Xin
Recently, the maximally-helicity-violating four-point form factor for the chiral stress-energy tensor in planar super Yang-Mills was computed to three loops at the…
On gauge amplitudes first appearing at two loops
Lance J. Dixon, Anthony Morales
We study scattering amplitudes in massless non-abelian gauge theory where all outgoing gluons have positive helicity. It has been argued recently by Costello that for a particular…
Antipodal self-duality of square fishnet graphs
Lance J. Dixon, Claude Duhr
In strongly-deformed planar super-Yang-Mills theory, or fishnet theory, a point-split single-trace correlation function of four dimension- scalar operators is given…
Rational QCD loop amplitudes and quantum theories on twistor space
Lance J. Dixon, Anthony Morales
We show how curing an anomaly of the twistor uplift of self-dual Yang-Mills theory implies linear relations among one-loop, -gluon, color-ordered subamplitudes in QCD, when all…
The Three-Point Form Factor of to Six Loops
Benjamin Basso, Lance J. Dixon, Alexander G. Tumanov
We study the three-point form factor of the length-three half-BPS operator () in planar Super-Yang-Mills theory, using analyticity and integrabil…