USING THE AXIAL ANOMALY TO STUDY NON-PERTURBATIVE PHENOMENA IN QCD
https://doi.org/10.56304/S2079562925060120
EDN: GHZOKZ
Abstract
In the framework of the dispersion approach to the axial anomaly, both Abelian and non-Abelian cases are considered. Anomalous sum rules for isovector, octet and singlet currents are derived, which allow us to relate the experimentally observed quantities, the transition form factors π0,η,η′→γγ(∗), with the non-perturbative gluon matrix element ⟨0|GG˜|γγ(∗)⟩. A description of this matrix element is obtained as a function of the photon virtuality in various kinematic regions.
About the Authors
S. P. Khlebtsov
National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
A. G. Oganesian
National Research Centre “Kurchatov Institute”;
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research
Russian Federation
Russian Federation
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Review
For citations:
Khlebtsov S.P., Oganesian A.G. USING THE AXIAL ANOMALY TO STUDY NON-PERTURBATIVE PHENOMENA IN QCD. Nuclear Physics and Engineering. 2026;17(1):158-164. (In Russ.) https://doi.org/10.56304/S2079562925060120. EDN: GHZOKZ
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