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Solar-neutrino reactions on deuteron in effective field theory

S. Ando·Y. H. Song·T. -S. Park·H. W. Fearing·K. Kubodera
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Abstract

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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S. Ando, Y. H. Song, T. -S. Park, H. W. Fearing, K. Kubodera. 2003-01-11. Solar-neutrino reactions on deuteron in effective field theory. https://doi.org/10.1016/s0370-2693(03)00046-7

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