Parity violation in quasielastic electron-nucleus scattering within the relativistic impulse approximation
Name
PhysRevC.91.045502.pdf
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909.01 KB
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Author(s)
Caballero, J. A.
Gonzalez-Jimenez, R.
Donnelly, T William
Date Issued
April 2015
Journal
Physical Review C
Publisher
American Physical Society
Citation
Gonzalez-Jimenez, R., J. A. Caballero, and T. W. Donnelly. "Parity violation in quasielastic electron-nucleus scattering within the relativistic impulse approximation." Phys. Rev. C 91, 045502 (April 2015). © 2015 American Physical Society
Version
Final published version
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 γ − Z nuclear responses are also analyzed.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.91.045502
