Composite operators and form factors in N=4 SYM

Understand

We construct the most general composite operators of N = 4 SYM in Lorentz harmonic chiral ($\approx$ twistor) superspace.

• The operators are built from the SYM supercurvature which is nonpolynomial in the chiral gauge prepotentials.
• We reconstruct the full nonchiral dependence of the supercurvature.
• We compute all tree-level MHV form factors via the LSZ redcution procedure with on-shell states made of the same supercurvature.