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- Title
Study of the Alpha-particle Monopole Transition form Factor.
- Authors
Viviani, M.; Kievsky, A.; Marcucci, L. E.; Girlanda, L.
- Abstract
The 4 He monopole form factor is studied by computing the transition matrix element of the electromagnetic charge operator between the 4 He ground-state and the p + 3 H and n + 3 He 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 fair agreement with recent MAMI data. Comparison with other theoretical calculations are also provided.
- Subjects
TRANSITION metals; WAVE functions; ALPHA rays
- Publication
Few-Body Systems, 2024, Vol 65, Issue 3, p1
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-024-01940-2