Recursion relations and scattering amplitudes in the light-front formalism

C. A. Cruz-Santiago, A. M. Staśto

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The fragmentation functions and scattering amplitudes are investigated in the framework of light-front perturbation theory. It is demonstrated that, the factorization property of the fragmentation functions implies the recursion relations for the off-shell scattering amplitudes which are light-front analogs of the Berends-Giele relations. These recursion relations on the light-front can be solved exactly by induction and it is shown that the expressions for the off-shell light-front amplitudes are represented as a linear combinations of the on-shell amplitudes. By putting external particles on-shell we recover the scattering amplitudes previously derived in the literature.

Original languageEnglish (US)
Pages (from-to)368-387
Number of pages20
JournalNuclear Physics B
Issue number2
StatePublished - Oct 11 2013

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


Dive into the research topics of 'Recursion relations and scattering amplitudes in the light-front formalism'. Together they form a unique fingerprint.

Cite this