Abstract
We develop a formalism for the resummation of target mass corrections in off-forward two-photon amplitudes given by a chronological product of electromagnetic currents, arising in, e.g., deeply virtual Compton scattering. The method is based on a relation of composite operators with a definite twist to harmonic tensors, which form an irreducible representation of the Lorentz group. We give an application of the framework for the matrix elements of twist-two operators.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 173-182 |
| Number of pages | 10 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 507 |
| Issue number | 1-4 |
| DOIs | |
| State | Published - May 17 2001 |
| Externally published | Yes |
Keywords
- Double distributions
- Harmonic tensors
- Skewed parton distributions
- Target mass corrections
- Two-photon processes
ASJC Scopus subject areas
- Nuclear and High Energy Physics