On the gauge invariance of the DVCS amplitude - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2000

On the gauge invariance of the DVCS amplitude

Résumé

We analyze in detail the problem of gauge invariance of the deeply vitual Compton scattering (DVCS) amplitude. Using twist 3 one-gluon exchange diagram contributions and the QCD equations of motion, we derive the general gauge invariant expression of the DVCS amplitude on a (pseudo)scalar particle (pion, $He^4$). Similarly to the case of deep inelastic scattering, the amplitude does not depend on the twist-3 quark-gluon correlations at the Born level. The contribution of the derived amplitude to the single-spin asymmetry with longitudinally polarized lepton is calculated.

Dates et versions

hal-00009494 , version 1 (04-10-2005)

Identifiants

Citer

I. V. Anikin, B. Pire, O. V. Teryaev. On the gauge invariance of the DVCS amplitude. Physical Review D, 2000, 62, pp.071501. ⟨10.1103/PhysRevD.62.071501⟩. ⟨hal-00009494⟩
125 Consultations
0 Téléchargements

Altmetric

Partager

More