A comment on the (Be-7)(p, gamma)(B-8) cross section and the solar neutrino problem

Evidence is presented which indicates that the accepted value for the cross section of the (Be-7)(p, gamma)(B-8) reaction at stellar energies is probably too large. It is suggested that the accepted value of the (Li-7)(d, p)(Li-8) cross section, which has been used for normalization purposes, is too large; that the accepted value for the ratio of both cross sections is too large; and that the energy dependence used to extrapolate to stellar energies from the higher energies at which measurements have been made is inaccurate. The consequent reduction of the (Be-7)(p, gamma)(B-8) cross section by about 30 percent would not be sufficient to resolve the solar-neutrino problem but would significantly lessen the discrepancy between observation and calculation.

Перевод пока недоступен