Speaker
Hyeon-Dong Son
(Korea University, Inha University)
Description
We present our recent study on the light-quark distribution functions in a heavy baryon within the chiral quark-soliton model. We mainly consider the twist-2 isoscalar unpolarized and isovector longitudinally polarized quark distributions which are large in the limit $N_c \to \infty$. We discuss the sum rules and the behavior of the x-dependences of the distributions when the heavy-quark mass is varied. Compared with those in the nucleon, it is observed that the light-quark distributions in a heavy baryon are concentrated at the smaller $x$ region, which is also predicted in the case of the naive parton-model picture.
Primary author
Hyeon-Dong Son
(Korea University, Inha University)
Co-author
Hyun-Chul Kim
(Inha University)
