Title of article :
Exclusive evolution kernels in two-loop order: parity even sector
Author/Authors :
A.V. Belitsky، نويسنده , , D. Müller، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
We complete the construction of the non-forward evolution kernels in next-to-leading order responsible for the scale dependence of e.g. parity even singlet distribution amplitudes. Our formalism is designed to avoid any explicit two-loop calculations employing instead conformal and supersymmetric constraints as well as known splitting functions.
Keywords :
Supersymmetric and conformal constraints , Evolution equation , Two-loop exclusive kernels
Journal title :
PHYSICS LETTERS B
Journal title :
PHYSICS LETTERS B