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Dependence of two-nucleon momentum densities on total pair momentum

Journal Article · · Physical Review C
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Two-nucleon momentum distributions are calculated for the ground states of 3He and 4He 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 3He and 1/4 for 4He, 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'pN).
http://dx.doi.org/10.1103/PhysRevC.78.021001
Research Organization:
Thomas Jefferson Lab National Accelerator Facility
Sponsoring Organization:
USDOE
OSTI ID:
955940
Report Number(s):
JLAB-THY-08-826; arXiv:0806.1718; DOE/OR/23177-0402
Journal Information:
Physical Review C, Journal Name: Physical Review C Vol. 78
Country of Publication:
United States
Language:
English

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