Electroweak form factors of large nuclei as BPS skyrmions

Abstract

We employ the Bogomolnyi-Prasad-Sommerfield (BPS) Skyrme model within the framework of semi-classical quantization to compute both electromagnetic and neutral current form factors for heavy nuclei. Our results show excellent agreement with the experimental data for low- to moderate momentum transfer. Further, we present an analytic expression of the neutral current form factor for generic nuclei, expressed as a power series in the momentum transfer. Our method provides an alternative to existing phenomenological approaches, and is particularly relevant for precision neutrino experiments where control over model-dependent systematics is essential for probing physics beyond the Standard Model.