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.

Weak charge and weak radius of C-12 / O. Koshchii, J. Erler, M. Gorchtein, C.J. Horowitz, J. Piekarewicz, X. Roca-Maza, C.-. Seng, H. Spiesberger. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 102:2(2020 Aug 11), pp. 022501.022501-1-022501.022501-6. [10.1103/PhysRevC.102.022501]

Weak charge and weak radius of C-12

X. Roca-Maza;
2020

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.
Settore FIS/04 - Fisica Nucleare e Subnucleare
European Nuclear Science and Application Research 2
11-ago-2020
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/799926
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