The cross section for P + P - D + e(+) + nu(e)

Details The cross section for P + P - D + e(+) + nu(e) The cross section for P + P - D + e(+) + nu(e)

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...359l..67g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 359, Aug. 20, 1990, p. L67-L69.

Astronomy and Astrophysics

Astrophysics

16

Nuclear Fusion, Proton-Proton Reactions, Solar Interior, Boron, Coulomb Collisions, Neutrinos, Wave Functions, Weak Interactions (Field Theory)

Scientific paper

The cross section for the fundamental proton-proton fusion process has been reevaluated, employing more accurate parameters such as the deuteron wave function and the weak-interaction coupling constant (from the neutron beta-decay). Small corrections have been computed, such as the effects of vacuum polarization on barrier penetration and the radiative corrections to the process; these two effects almost cancel. The cross section is larger than that computed in previous work. The effect on the expected flux of neutrinos from B-8 decay is a reduction by a factor of 0.92, narrowing the gap between theory and experiment in the solar neutrino problem.

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