Skewed quark distribution of the pion in the light-front quark model

Abstract

We calculate the skewed quark distributions(SQDs) of the pion in the light-front quark model, and discuss the calculation of the nonvalence contribution to the SQDs in this model. The frame-independence of our model calculation is guaranteed by the constraint of the sum rule between the SQDs and form factor. Our numerical results show large nonvalence contributions to the SQDs at small momentum transfer region as the skewedness increases.

11 pages including 11 figures(2 column latex file): Changes-1. Added discussions on the discontinuity and polynomiality of SQD in Sec. IV and Fig. 10; -2. Added discussion of the isosinglet SQDs of the pion in Sec. IV and Fig. 11; -3. Added some references