Electromagnetic form factors of ${}^7$Li and ${}^7$Be in cluster effective field theory

Abstract

Effective field theory (EFT) provides a powerful model-independent theoretical framework for illuminating complicated interactions across a wide range of physics areas and subfields. In this work, we study the electromagnetic form factors of Lithium-7 and Beryllium-7 at low momentum transfers in cluster EFT, treating the nuclei as triton-Helium-4 and helion-Helium-4 bound states. We demonstrate how to directly extract the asymptotic normalization coefficients from the experimental measurements of charge radii, and use them to calculate several electromagnetic observables of these nuclei.

arXiv comment24 pages, 9 figures, 5 tables