Speaker
Aniruddha Venkata
(Uni Bonn, BCTP)
Description
We study scattering amplitudes and form factors in planar N=4 Super Yang-Mills theory and planar QCD in the limit where two pairs of gluons become collinear. We find that, when the virtualities of both collinear pairs are spacelike, the collinear factorisation of the amplitude involves a generalised splitting amplitude that correlates the two collinear directions. In N=4, we find that our generalised splitting amplitude agrees with the Bern-Dixon-Smirnov (BDS) subtracted six-point amplitude in multi-Regge kinematics. The latter can be explicitly evaluated using integrability to all orders in the coupling. We also present compelling evidence for the universality of the generalised splitting amplitude.
Author
Aniruddha Venkata
(Uni Bonn, BCTP)
