TL;DR
This paper investigates pion-photon transition distribution amplitudes within the NJL model, confirming theoretical properties like support, sum rules, and polynomiality, and emphasizing the importance of PCAC in the analysis.
Contribution
It provides a detailed calculation of pion-photon TDAs in the NJL model, explicitly verifying key theoretical constraints and highlighting the role of PCAC.
Findings
Verification of support, sum rules, and polynomiality conditions
Explicit calculations of pion-photon TDAs in the NJL model
Highlighting the role of PCAC in the formalism
Abstract
The pion-photon Transition Distribution Amplitudes (TDAs) are studied, treating the pion as a bound state in the sense of Bethe-Salpeter, in the formalism of the NJL model. The results obtained explicitly verify support, sum rules and polynomiality conditions. The role of PCAC is highlighted.
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