TY - JOUR
T1 - Reconstruction of non-forward evolution kernels
AU - Belitsky, A. V.
AU - Müller, D.
AU - Freund, A.
N1 - Funding Information:
A.B. was supported by the Alexander von Humboldt Foundation.
PY - 1999
Y1 - 1999
N2 - 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.
AB - 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.
KW - Conformal constraints
KW - Evolution equation
KW - Two-loop exclusive kernels
UR - http://www.scopus.com/inward/record.url?scp=0000732764&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000732764&partnerID=8YFLogxK
U2 - 10.1016/S0370-2693(99)00837-0
DO - 10.1016/S0370-2693(99)00837-0
M3 - Article
AN - SCOPUS:0000732764
SN - 0370-2693
VL - 461
SP - 270
EP - 279
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3
ER -