On a possibility to determine the S-factor of the hep process in experiments with thermal (cold) neutrons

摘要

The problem of the magnitude of the S--factor of the hep process $p +{^3\mathrm{He}} \to {^4\mathrm{He}} + e^+ + \nu_e$ is one of the most importantunsolved problems in nuclear astrophysics. The magnitude of $S(hep)$ has alsoan important impact on the interpretation of the Super-Kamiokande solarneutrino results in terms of neutrino oscillations. We point out the possiblityto determine the major hadronic contribution to $S(hep)$ from the measurementof the total cross section of the process $n + {^3\mathrm{H}} \to{^4\mathrm{He}} + e^- + \bar{\nu}_e$ in experiments with high intensity beamsof thermal or cold neutrons.