2011/12/12 by M. Alvioli, Massimiliano Alvioli, C. Ciofi degli Atti +6 · 31 citations
Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Distribution function #Few-body systems #Nuclear physics #Nuclear physics research studies #Nucleon #Observable #Particle physics #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Wave function #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.85.021001
published in Physical Review C 85(2) (American Institute of Physics) · 5 pages, 5 figures
arxiv created 2011/12/12 · openalex publication_date 2012/02/17 · arxiv updated 2015/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using realistic wave functions, the proton-neutron and proton-proton momentum distributions in 3He and 4He are calculated as a function of the relative, krel, and center of mass, Kc.m., momenta and the angle between them. For large values of krel\ensuremath\gtrsim 2 fm^\ensuremath-1 and small values of Kc.m.\ensuremath\lesssim1.0 fm^\ensuremath-1, both distributions are angle independent and decrease with increasing Kc.m., with the pn distribution factorizing into the deuteron momentum distribution times a rapidly decreasing function of Kc.m., in agreement with the two-nucleon (2N) short-range correlation (SRC) picture. When Kc.m. and krel are both large, the distributions exhibit a strong angle dependence, which is evidence of three-nucleon (3N) SRC. The predicted center of mass and angular dependence of 2N and 3N SRC should be observable in two-nucleon knock-out processes A(e,e^\ensuremath'pN)X.