Contrasting N→Δ and N→N parity-violating asymmetries in nuclei

✍ Scribed by P. Amore; R. Cenni; T.W. Donnelly; A. Molinari

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 293 KB
• Volume: 690
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00706-5

✦ Synopsis

Several perspectives that can be opened by studying the electroexcitation of the delta via parityviolating electron scattering from nuclei are examined, working within the context of the relativistic Fermi-gas model. A strong enhancement of the left-right asymmetry in the delta sector compared with that in the quasielastic regime is found and the potential to find clear signatures for the axial-vector contributions of the nucleon-to-delta transition to the asymmetry identified at specific low momentum transfer kinematics. Possibilities of probing the deformation of the delta are also explored, and using both the proton and nuclei as targets, the ability to study the asymmetry on neutrons is studied.