Weak axial exchange currents for the Bethe-Salpeter equation
نویسنده
چکیده
We construct weak axial one-boson exchange currents for the BetheSalpeter equation, starting from chiral Lagrangians of the N∆(1236)πρ a1ω 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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