High energy solar neutrinos and p-wave contributions to ^3He(p,\nue^+)^4He

Abstract

High energy solar neutrinos can come from the hep reaction ^3He(p,\nue^+)^4He with a large end point energy of 18.8 MeV. Understanding the hep reaction may be important for interpreting solar neutrino spectra. We calculate the contribution of the axial charge transition ${}^3{P}_0{\to }^1{S}_0$ to the hep thermonuclear S factor using a one-body reaction model involving a nucleon moving in optical potentials. Our result is comparable to or larger than previous calculations of the s-wave Gamow Teller contribution. This indicates that the hep reaction may have p-wave strength leading to an enhancement of the S factor.

4 pages, 1 ps figure, very minor changes, Phys. Rev. C in press

Cited by in corpus (7)

• Three-flavor MSW solutions of the solar neutrino problem
• Weak proton capture on 3He
• Realistic Calculation of the hep Astrophysical Factor
• Critical Exponents of Extremal Kerr Perturbations
• The Solar $Hep$ Process
• Three Generation Long-wavelength Vacuum Oscillation Solution to the Solar Neutrino Problem
• On a possibility to determine the S-factor of the hep process in experiments with thermal (cold) neutrons