High Energy Physics - Phenomenology
[Submitted on 15 Mar 2005 (v1), last revised 12 Dec 2005 (this version, v2)]
Title:Circumventing the axial anomalies and the strong CP problem
View PDFAbstract: Many meson processes are related to the U_A(1) axial anomaly, present in the Feynman graphs where fermion loops connect axial vertices with vector vertices. However, the coupling of pseudoscalar mesons to quarks does not have to be formulated via axial vertices. The pseudoscalar coupling is also possible, and this approach is especially natural on the level of the quark substructure of hadrons. In this paper we point out the advantages of calculating these processes using (instead of the anomalous graphs) the graphs where axial vertices are replaced by pseudoscalar vertices. We elaborate especially the case of the processes related to the Abelian axial anomaly of QED, but we speculate that it seems possible that effects of the non-Abelian axial anomaly of QCD can be accounted for in an analogous way.
Submission history
From: Dalibor Kekez [view email][v1] Tue, 15 Mar 2005 11:47:44 UTC (46 KB)
[v2] Mon, 12 Dec 2005 15:54:16 UTC (47 KB)
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