Heavy Quark Productions with Spin

Abstract

Heavy quark productions in high energy polarized scatterings are reviewed from a personal point of view. After mentioning why heavy quark physics is so interesting, I concentrate on two rather specific subjects: (1) polarized ${\Lambda }_c^{+}$ productions in deep inelastic $\ell p$ scatterings and (2) ${\psi }^{\prime }$ productions in polarized $pp$ collisions. The first one is an interesting process for extracting the polarized gluon in the proton and the second one may give another test of the color-octet model of heavy quarkonium productions in high energy collisions.

Comments: 7 pages including 5 eps-figures, uses a41.sty, Latex. Talk given at the International School Seminor'97, "Structure of Particles and Nuclei and their Interactions", (Tashkent, Oct. 6-13, 1997)