The astrophysical factor for the proton weak capture on He-3 is calculated with correlated hyperspherical harmonic wave functions corresponding to a realistic Hamiltonian consisting of the Argonne upsilon(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 He-3 S- and P-wave channels to He-4 are considered. The S factor at a p He-3 center-of-mass energy of 10 keV is predicted to be 10.1 x 10(-20) keVb, a factor of similar or equal to 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.
Realistic calculation of the He-3+p (hep) astrophysical factor RID A-7123-2011
MARCUCCI, LAURA ELISA;
2000-01-01
Abstract
The astrophysical factor for the proton weak capture on He-3 is calculated with correlated hyperspherical harmonic wave functions corresponding to a realistic Hamiltonian consisting of the Argonne upsilon(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 He-3 S- and P-wave channels to He-4 are considered. The S factor at a p He-3 center-of-mass energy of 10 keV is predicted to be 10.1 x 10(-20) keVb, a factor of similar or equal to 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
