Abstract
We present a feasibility study of a simultaneous subpercent extraction of the weak charge and the weak radius of the C12 nucleus using parity-violating electron scattering, based on a largely model-independent assessment of the uncertainties. The corresponding measurement is considered to be carried out at the future MESA facility in Mainz with Ebeam=155MeV. We find that a combination of a 0.3% precise measurement of the parity-violating asymmetry at forward angles with a 10% measurement at backward angles will allow to determine the weak charge and the weak radius of C12 with 0.4% and 0.5% precision, respectively. These values could be improved to 0.3% and 0.2% for a 3% backward measurement. This experimental program will have impact on precision low-energy tests in the electroweak sector and nuclear structure.
| Original language | English |
|---|---|
| Article number | 022501 |
| Journal | Physical Review C |
| Volume | 102 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020 American Physical Society.
Funding
The authors acknowledge useful discussions with K. Kumar and F. Maas. We thank T. W. Donnelly, R. Ferro-Hernández, and O. Moreno for helpful correspondence. The work of J.E., M.G., O.K., and H.S. was supported by the German-Mexican Research Collaboration Grants No. 278017 (CONACyT) and No. SP 778/4-1 (DFG). M.G. was supported by the EU Horizon 2020 Research and Innovation Programme, Project No. STRONG-2020, Grant Agreement No. 824093. X.R.-M. acknowledges funding from the EU Horizon 2020 Research and Innovation Programme, Grant Agreement No. 654002. J.P. acknowledges support from the US Department of Energy Office of Nuclear Physics under Award No. DE-FG02-92ER40750. C.-Y.S. was supported, in part, by the DFG (Grant No. TRR110) and the NSFC (Grant No. 11621131001) through the funds provided to the Sino-German CRC 110 “Symmetries and the Emergence of Structure in QCD,” and by the Alexander von Humboldt Foundation through the Humboldt Research Fellowship. C.J.H. was supported by the US Department of Energy Grants No. DE-FG02-87ER40365 and No. DE-SC0018083.
| Funders | Funder number |
|---|---|
| US Department of Energy Office of Nuclear Physics | DE-FG02-92ER40750, TRR110 |
| U.S. Department of Energy | DE-SC0018083, DE-FG02-87ER40365 |
| Alexander von Humboldt-Stiftung | |
| Horizon 2020 Framework Programme | |
| Deutsche Forschungsgemeinschaft | |
| National Natural Science Foundation of China | 11621131001 |
| Consejo Nacional de Ciencia y Tecnología | SP 778/4-1 |
| Horizon 2020 | 654002, STRONG-2020, 824093 |