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Bjorken sum rule with analytic coupling

I. R. Gabdrakhmanov

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

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N. A. Gramotkov

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

Faculty of Physics, Moscow State University, 119991 Moscow, Russia

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A. V. Kotikov

https://orcid.org/0000-0002-1408-2735

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

E-mail Address: kotikov@theor.jinr.ru

Corresponding author.

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O. V. Teryaev

https://orcid.org/0000-0001-7002-9093

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

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D. A. Volkova

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia

Engineering Physics Institute, Dubna State University, 141980 Dubna, Moscow, Russia

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, and

I. A. Zemlyakov

Department of Physics, Universidad Tecnica Federico Santa Maria, Avenida Espana 1680, Valparaiso, Chile

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https://doi.org/10.1142/S0217751X24501756Cited by:1 (Source: Crossref)

Abstract

This study is dedicated to the description of the polarized Bjorken sum rule, based on recently derived formulas within the analytic QCD approach. To accommodate the photoproduction limit and incorporate the Gerasimov–Drell–Hearn and Burkhardt-Cottingham sum rules, we develop a new representation for the twist-2 part of the Bjorken sum rule. The derived results were applied for processing of experimental data. We observed a good agreement between the experimental data and the predictions from analytic QCD. In contrast, there is a significant discrepancy between these data and the fitting curves within the standard perturbative approach.

Keywords:

PACS: 12.38.−t, 12.38.Qk

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