Dependence of two-nucleon momentum densities on total pair momentum.
Two-nucleon momentum distributions are calculated for the ground states of {sup 3}He and {sup 4}He as a function of the nucleons' relative and total momenta. We use variational Monte Carlo wave functions derived from a realistic Hamiltonian with two- and three-nucleon potentials. The momentum distribution of pp pairs is found to be much smaller than that of pn pairs for values of the relative momentum in the range 300-500 MeV/c and vanishing total momentum. However, as the total momentum increases to 400 MeV/c, the ratio of pp to pn pairs in this relative momentum range grows and approaches the limit 1/2 for {sup 3}He and 1/4 for {sup 4}He, corresponding to the ratio of pp to pn pairs in these nuclei. This behavior should be easily observable in two-nucleon knock-out processes, such as A(e,e{prime}pN).
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 940213
- Report Number(s):
- ANL/PHY/JA-61965; PRVCAN; TRN: US0807050
- Journal Information:
- Phys. Rev. C, Vol. 78, Issue Aug. 2008; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- ENGLISH
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Dependence of two-nucleon momentum densities on total pair momentum