Bjorken sum rule with analytic coupling

I. R. Gabdrakhmanov, N. A Gramotkov,A. V. Kotikov,O. V. Teryaev, D. A. Volkova,I. A. Zemlyakov

arxiv（2024）

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摘要

We found good agreement between the experimental data obtained for the polarized Bjorken sum rule and the predictions of analytic QCD, as well as a strong difference between these data and the results obtained in the framework of perturbative QCD. To satisfy the limit of photoproduction and take into account Gerasimov-Drell-Hearn and Burkhardt-Cottingham sum rules, we develope new representation of the perturbative part of the polarized Bjorken sum rule.

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