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Probing the polarized gluon content of the proton through $ \chi_2$ hadroproduction
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abstract
Determining how much spin is carried by gluon in a polarized proton is a fundamental problem which cannot be resolved by completely inclusive deep inelastic measurements. Hadroproduction of heavy flavors is very sensitive to the gluon content of hadrons. We show that $\chi_2 (3555)$ production in polarized proton-proton collisions is a good candidate reaction to address this challenging question.
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