Discontinuities of multi-Regge amplitudes
arXiv:1412.3253 · doi:10.1063/1.4915996
Abstract
In the BFKL approach, discontinuities of multiple production amplitudes in invariant masses of produced particles are discussed. It turns out that they are in evident contradiction with the BDS ansatz for $n$-gluon amplitudes in the planar $N$=4 SYM at $n\ge 6$. An explicit expression for the NLO discontinuity of the two-to-four amplitude in the invariant mass of two produced gluons is is presented.
4 pages, Invited talk presented by V.S. Fadin at "DIFFRACTION 2014", May 10 - 15, 2014, Primosten (Croatia) (to be published in the AIP Conference Proceedings