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Weak axial exchange currents for the Bethe-Salpeter equation

F. C. Khanna·E. Truhlik
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Abstract

We construct weak axial one-boson exchange currents for the Bethe-Salpeter equation, starting from chiral Lagrangians of the N-Δ(1236)-pi-rho-a_1-omega system. The currents fulfil the Ward-Takahashi identities and the matrix element of the full current between the two-body solutions of the Bethe-Salpeter equation satisfies the PCAC constraint exactly.

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F. C. Khanna, E. Truhlik. 1999-11-06. Weak axial exchange currents for the Bethe-Salpeter equation. https://doi.org/10.1016/s0375-9474(00)00060-9

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