Proton-Proton Fusion in Effective Field Theory to Fifth Order

Details Proton-Proton Fusion in Effective Field Theory to Fifth Order Proton-Proton Fusion in Effective Field Theory to Fifth Order

2001-01-08

arxiv.org/abs/nucl-th/0101017v1

Phys.Lett. B520 (2001) 87-91

Physics

Nuclear Physics

Nuclear Theory

9 pages

Scientific paper

10.1016/S0370-2693(01)01152-2

The proton-proton fusion process p p->d e^+ nu_e is calculated at threshold to fifth order in pionless effective field theory. There are two unknown two-body currents contributing at the second and fourth orders. Combined with the previous results for neutrino-deuteron and antineutrino-deuteron scattering, computed to third order in the same approach, we conclude that a 10% measurement of reactor antineutrino-deuteron scattering measurement could constrain the p p->d e^+ nu_e rate to ~7% while a ~3% measurement of nu_e d-> e^- p p could constrain the pp rate to ~2%.

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