Higher Order Corrections to the Light-cone Distribution Amplitudes of the Sigma baryon

Abstract

The Light-cone distribution amplitudes (LCDAs) of the ${\Sigma }^{\pm }$ baryons up to twist six are investigated on the basis of QCD conformal partial wave expansion approach. The calculations are carried out to the next-to-leading order of conformal spin accuracy. The nonperturbative parameters relevant to the LCDAs are determined in the framework of the QCD sum rule method. The explicit expressions of the LCDAs are given as the main results.

Comments: 20 pages, 3 figures. Versiton to appear in Phys. Rev. D. arXiv admin note: text overlap with arXiv:0909.0372