TWO--SPIN ASYMMETRY OF HEAVY QUARKONIA PRODUCTIONS AT RHIC ENERGY
classification
✦ hep-ph
keywords
polarizedrhictwo--spinasymmetriesasymmetrybottomoniumcharmoniumcollisions
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Hadroproductions of charmonium and bottomonium $\chi_J$ in polarized $pp$ collisions at RHIC energies are studied. Two--spin asymmetries $A_{LL}^{\chi_J}(pp)$ for these reactions are very good parameters for examining the polarized gluon distributions in a proton.
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