Parity violating pion electroproduction off the nucleon

Details Parity violating pion electroproduction off the nucleon Parity violating pion electroproduction off the nucleon

1995-08-08

arxiv.org/abs/nucl-th/9508014v1

Z.Phys. A353 (1995) 321-331

Physics

Nuclear Physics

Nuclear Theory

17 pages, RevTeX, 6 figures (in separate file figs.uu), uses epsf, accepted for publication in Z. Phys. A

Scientific paper

Parity violating (PV) contributions due to interference between $\gamma$ and $Z^0$ exchange are calculated for pion electroproduction off the nucleon. A phenomenological model with effective Lagrangians is used to determine the resulting asymmetry for the energy region between threshold and $\Delta(1232)$ resonance. The $\Delta$ resonance is treated as a Rarita-Schwinger field with phenomenological $N \Delta$ transition currents. The background contributions are given by the usual Born terms using the pseudovector $\pi N$ Lagrangian. Numerical results for the asymmetry are presented.

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