Parity violating pion electroproduction off the nucleon

Abstract

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.

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

References in corpus (2)

• Intermediate-Energy Semileptonic Probes of the Hadronic Neutral Current
• Low--Energy Theorems for Weak Pion Production

Cited by in corpus (9)

• The SAMPLE Experiment and Weak Nucleon Structure
• $\nu d\to {\mu }^{-}{\Delta }^{++}n$ Reaction and Axial Vector $N-\Delta$ Coupling
• Charged current weak electroproduction of Delta resonance
• Quark-Hadron Duality and Parity Violating Asymmetry of Electroweak Reactions in the Delta Region
• Parity-Violating Excitation of the Δ(1232): Hadron Structure and New Physics
• Parity-Violating Pion-Nucleon Coupling h_{πNN}^{(1)} from π^+ Electroproton Production Near the Threshold
• Electroweak Radiative Corrections to Parity-Violating Electroexcitation of the $\Delta$
• Weak quasielastic electroproduction of hyperons with polarization observables
• Neutral weak currents in pion electroproduction on the nucleon