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Physics  1998 

Heavy Quark Productions with Spin

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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.

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