Realistic calculation of the hep astrophysical factor
The astrophysical factor for the proton weak capture on {sup 3}He is calculated with correlated-hyperspherical-harmonics bound and continuum wave functions corresponding to a realistic Hamiltonian consisting of the Argonne {nu}{sub 18} two-nucleon and Urbana-IX three-nucleon interactions. The nuclear weak charge and current operators have vector and axial-vector components, that include one- and many-body terms. All possible multipole transitions connecting any of the p{sup 3}He S- and P-wave channels to the {sup 4}He bound state are considered. The S-factor at a p{sup 3}He center-of-mass energy of 10 keV, close to the Gamow-peak energy, is predicted to be 10.1 x 10{sup {minus}20} keV b, a factor of five larger than the standard-solar-model value. The P-wave transitions are found to be important, contributing about 40 % of the calculated S-factor.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 754868
- Report Number(s):
- DOE/ER/40150-1416; JLAB-THY-00-09; nucl-th/0003065; TRN: US0002322
- Journal Information:
- Physical Review Letters, Vol. 84, Issue 26; Other Information: Submitted to Physical Review Letters; PBD: 1 Mar 2000; ISSN 0031--9007
- Country of Publication:
- United States
- Language:
- English
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