On amplitudes in self-dual sector of Yang-Mills theory

Abstract

Self-dual perturbiner in the Yang-Mills theory is constructed by the twistor methods both in topologically trivial and topologically nontrivial cases. Maximally helicity violating amplitudes and their instanton induced analogies are briefly discussed.

Comments: 9 pages, Latex, a misguided reference is corrected, ps is also available at http://wwwtheor.itep.ru/preprints/1996/