Solar-neutrino reactions on deuteron in effective field theory

Details Solar-neutrino reactions on deuteron in effective field theory Solar-neutrino reactions on deuteron in effective field theory

2002-05-31

arxiv.org/abs/nucl-th/0206001v2

Phys.Lett. B555 (2003) 49-56

Physics

Nuclear Physics

Nuclear Theory

12 pages, 3 figures. Error estimation of higher order corrections detailed

Scientific paper

10.1016/S0370-2693(03)00046-7

The cross sections for low-energy neutrino-deuteron reactions are calculated within heavy-baryon chiral perturbation theory employing cut-off regularization scheme. The transition operators are derived up to next-to-next-to-next-to-leading order in the Weinberg counting rules, while the nuclear matrix elements are evaluated using the wave functions generated by a high-quality phenomenological NN potential. With the adoption of the axial-current-four-nucleon coupling constant fixed from the tritium beta decay data, our calculation is free from unknown low-energy constants. Our results exhibit a high degree of stability against different choices of the cutoff parameter, a feature which indicates that, apart from radiative corrections, the uncertainties in the calculated cross sections are less than 1 %.

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