High-energy electron scattering from nuclear target has revealed features that were not known before. A number of nuclear theoretical approaches have been made to explain the elastic electron scattering from helium isotopes in the region of large momentum transfers. A multiquark clustering effect is invoked to supplement the ordinary nuclear theoretical approach in explaining the nuclear form factors of light nuclei, namely3He,4He, and6Li. In all these three nuclei it is observed that ordinary nuclear-physics component dominates in the region of low momentum transfer but decreases with increasing the momentum transfer. The multiquark components become dominant in the higher-momentum-transfer regions.
- 12.40.Aa - Bag models and other phenomenological quark models
- 21.40.d - Few-nucleon systems
- 25.30.Bf - Elastic electron scattering