  We describe a new approach to computing the chiral part of correlation
functions of stress-tensor supermultiplets in N=4 SYM that relies on
symmetries, analytic properties and the structure of the OPE only. We
demonstrate that the correlation functions are given by a linear combination of
chiral N=4 superconformal invariants accompanied by coefficient functions
depending on the space-time coordinates only. We present the explicit
construction of these invariants and show that the six-point correlation
function is fixed in the Born approximation up to four constant coefficients by
its symmetries. In addition, the known asymptotic structure of the correlation
function in the light-like limit fixes unambiguously these coefficients up to
an overall normalization. We demonstrate that the same approach can be applied
to obtain a representation for the six-point NMHV amplitude that is free from
any auxiliary gauge fixing parameters, does not involve spurious poles and
manifests half of the dual superconformal symmetry.

High Energy Physics - Theory