Unsubtracted Dispersion Relation and the Anomalous Term

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概要

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• We ievestigate the axial vector (pseudoscalar) current-two-photon triangle graph by means of unsubtracted dispersion relations. The anomalous term appears in agreement with the previous Feynman-Dyson calculations using regulators and is found to be present because of the fact that the axial vector current-two-photon form factor G(s) does not satisfy the superconvergence relation ∫^∞_<4m^2>Im G(s)ds=0. We also discuss the kinematical difference between the matrix element of the axial vector current and that of the divergence of the axial vector current.

• 理論物理学刊行会の論文
• 1972-12-25

著者

• Kikugawa Hiroyuki

  Department Of Physics University Of Tokyo

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