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

C. J. Horowitz
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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 $^3P_0\to ^1S_0$ 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.

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C. J. Horowitz. 1999-06-21. High energy solar neutrinos and p-wave contributions to ^3He(p,\nue^+)^4He. https://doi.org/10.1103/physrevc.60.022801

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