Realistic Calculation of the {sup 3}He + p (hep ) Astrophysical Factor

Journal Article · Mon Jun 26 00:00:00 EDT 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.5959· OSTI ID:20216905

Marcucci, L E ^[1]; Schiavilla, R ^[1]; Viviani, M ^[2]; Kievsky, A ^[2]; Rosati, S ^[2]

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1. Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
2. INFN, Sezione di Pisa, I-56100 Pisa, (Italy)

The astrophysical factor for the proton weak capture on {sup 3}He is calculated with correlated hyperspherical harmonic wave functions corresponding to a realistic Hamiltonian consisting of the Argonne v{sub 18} two-nucleon and Urbana-IX three-nucleon interactions. The nuclear weak current has vector and axial-vector components with one- and many-body terms. All possible transitions connecting any of the p {sup 3} He S - and P -wave channels to {sup 4}He are considered. The S factor at a p {sup 3} He center-of-mass energy of 10 keV is predicted to be 10.1x10{sup -20} keV b , a factor of {approx_equal}4.5 larger than the value adopted in the standard solar model. The P -wave transitions are found to contribute about 40% of the calculated S factor. (c) 2000 The American Physical Society.

• OSTI ID: 20216905
• Journal Information: Physical Review Letters, Vol. 84, Issue 26; Other Information: PBD: 26 Jun 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
PROTON REACTIONS
HELIUM 3 TARGET
CAPTURE
POSITRONS
ELECTRON NEUTRINOS
HELIUM 4
THEORETICAL DATA