科研之友
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摘要
The double longitudinal-spin asymmetry, A(LL), of the J/ production in polarized proton-proton collisions is presented in this paper at QCD next-to-leading order. It is found that the obtained values of A(LL) are in general consistent with the PHENIX measurements. Various sets of the long-distance matrix elements (LDMEs) are employed in our calculation to study the possible theoretical uncertainties. It is found that, for p(t) < 5 GeV, all these LDMEs lead to almost the same results, which are within the tolerance of the experimental data uncertainties.
- 出版日期2018-11-22
- 单位贵州财经大学
