Dependence of two-nucleon momentum densities on total pair momentum.

Journal Article · Fri Aug 01 04:00:00 EDT 2008 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.78.021001· OSTI ID:940213

Wiringa, R B; Schiavilla, R; Pieper, S C; Carlson, J; LANL,

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 Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 940213
• Report Number(s): ANL/PHY/JA-61965
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: Aug. 2008 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DISTRIBUTION
GROUND STATES
HAMILTONIANS
NUCLEI
NUCLEONS
WAVE FUNCTIONS