Study of the alpha-particle monopole transition form factor
Nuclear Theory
2024-06-04 v1
Abstract
The 4He monopole form factor is studied by computing the transition matrix element of the electromagnetic charge operator between the 4He ground-state and the p+3H and n+3He scattering states. The nuclear wave functions are calculated using the hyperspherical harmonic method, by starting from Hamiltonians including two- and three-body forces derived in chiral effective field theory. The electromagnetic charge operator retains, beyond the leading order (impulse approximation) term, also higher order contributions, as relativistic corrections and meson-exchange currents. The results for the monopole form factor are in fairly agreement with recent MAMI data. Comparison with other theoretical calculations are also provided.
Cite
@article{arxiv.2406.00653,
title = {Study of the alpha-particle monopole transition form factor},
author = {M. Viviani and A. Kievsky and L. E. Marcucci and L. Girlanda},
journal= {arXiv preprint arXiv:2406.00653},
year = {2024}
}
Comments
22 pages, 6 figures