Parity violation in quasielastic electron-nucleus scattering within the relativistic impulse approximation

R. González-Jiménez, J. A. Caballero, and T. W. Donnelly
Phys. Rev. C 91, 045502 – Published 13 April 2015

Abstract

We study parity violation in quasielastic electron-nucleus scattering using the relativistic impulse approximation. Different fully relativistic approaches have been considered to estimate the effects associated with the final-state interactions. We have computed the parity-violating quasielastic (PVQE) asymmetry and have analyzed its sensitivity to the different ingredients that enter into the description of the reaction mechanism: final-state interactions, nucleon off-shellness effects, and current gauge ambiguities. Particular attention has been paid to the description of the weak neutral current form factors. The PVQE asymmetry is proven to be an excellent observable when the goal is to get precise information on the axial-vector sector of the weak neutral current. Specifically, from measurements of the asymmetry at backward scattering angles good knowledge of the radiative corrections entering in the isovector axial-vector sector can be gained. Finally, scaling properties shown by the interference γZ nuclear responses are also analyzed.

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  • Received 19 January 2015

DOI:https://doi.org/10.1103/PhysRevC.91.045502

©2015 American Physical Society

Authors & Affiliations

R. González-Jiménez1,2,*, J. A. Caballero1, and T. W. Donnelly3

  • 1Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla, 41080 Sevilla, Spain
  • 2Department of Physics and Astronomy, Ghent University, Proeftuinstraat 86, B-9000 Gent, Belgium
  • 3Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

  • *Corresponding author: raugj@us.es

See Also

Parity violation and dynamical relativistic effects in (e,eN) reactions

R. González-Jiménez, J. A. Caballero, and T. W. Donnelly
Phys. Rev. C 91, 045503 (2015)

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Vol. 91, Iss. 4 — April 2015

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