Scattering in relativistic quantum field theory: basic concepts, tools,   and results
  We provide an overview of basic concepts, tools, and results of quantum field theoretical scattering theory. This article is prepared for the second edition of the Encyclopedia of Mathematical Physics, edited by M. Bojowald and R.J. Szabo, to be published by Elsevier. 
Detlev Buchholz and Wojciech Dybalski