Transition Form Factors of Pseudoscalar Mesons and the Contribution of the Gluon Anomaly

被引:0
|
作者
S. P. Khlebtsov
A. G. Oganesian
机构
[1] National Research Center Kurchatov lnstitute,Alikhanov Institute for Theoretical and Experimental Physics
来源
Physics of Atomic Nuclei | 2019年 / 82卷
关键词
axial anomaly; transition form factor; pseudoscalar mesons; anomaly sum rules; gluon anomaly; HEP phenomenology; HEP theory;
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摘要
The expressions for the transition form factors (TFFs) of pseudoscalar mesons are derived in the context of the anomaly sum rule approach based on the dispersion representation of the axial anomaly and hypothesis of the global quark-hadron duality. The obtained solutions take into account the π0-η-η′ mixing and the contribution of the gluon anomaly. It is shown that this method allows one to describe the TFFs for spacelike and timelike photon virtualities. The contribution of the gluon anomaly is estimated.
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页码:1616 / 1620
页数:4
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