Abstract
We develop a framework for the reconstruction of the non-forward kernels which govern the evolution of twist-two distribution amplitudes and off-forward parton distributions beyond leading order. It is based on the knowledge of the special conformal symmetry breaking part induced by the one-loop anomaly and conformal terms generated by forward next-to-leading order splitting functions, and thus avoids an explicit two-loop calculation. We demonstrate the formalism by applying it to the chiral odd and flavour singlet parity odd sectors.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 270-279 |
| Number of pages | 10 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 461 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1999 |
| Externally published | Yes |
Keywords
- Conformal constraints
- Evolution equation
- Two-loop exclusive kernels
ASJC Scopus subject areas
- Nuclear and High Energy Physics