Weak axial exchange currents for the Bethe-Salpeter equation

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.

26 pages with 1 figure, LaTeX, feynman, submitted to Nucl. Phys. A. A small grammatical change in Acknowledgments

References in corpus (4)

• On the physics of massive neutrinos
• Neutrino-Nucleus Reactions
• Electromagnetic interactions for the two-body spectator equations
• Chiral Lagrangians and the transition amplitude for radiative muon capture

Cited by in corpus (5)

• Relativistic model of 2p-2h meson exchange currents in (anti)neutrino scattering
• Muon Capture in Deuterium
• Weak axial nuclear heavy meson exchange currents and interactions of solar neutrinos with deuterons
• On the pion electroproduction amplitude
• Gauge symmetric delta(1232) couplings and the radiative muon capture in hydrogen