Solar neutrino cross sections.

Numerical values for different solar neutrino cross sections are available at this url.

Solar Neutrino Cross Sections and Nuclear Beta Decay
Author(s): John Bahcall
Journal: Physical Review, 135, B137 (July 1964).

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Abstract: The neutrino-producing reactions that are believed to occur in the interior of the sun are reviewed and the predicted neutrino fluxes from these reactions are presented. The relevant absorption cross sections for neutrino-induced transitions from the ground state of Cl37 to various states in Ar37 are then calculated. The nuclear model adopted in these calculations is also used to predict the decay rates and branching ratios for a number of nuclei with 1d3/2n configurations; comparisons with experiment are made wherever possible and additional tests are suggested. A method for extracting Gamow-Teller matrix elements from mixed transitions between members of the same isotopic multiplet is then illustrated. The theory of bound-state neutrino capture is also outlined and applied to the proposed solar neutrino experiment. In an Appendix, some neutrino cross sections that are useful in interpreting the reactor experiment of Davis are presented.

Gallium solar neutrino experiments: absorption cross sections, neutrino spectra, and predicted event rates
Author(s): John Bahcall
Journal: Phys. Rev. C, 56, No. 6, 3391-3409 (December 1997), hep-ph/9710491.

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Abstract: Neutrino absorption cross sections for 71Ga are calculated for all solar neutrino sources with standard energy spectra, and for laboratory sources of 51Cr and 37Ar; the calculations include, where appropriate, the thermal energy of decaying solar ions and use improved nuclear and atomic data. The ratio, R, of measured (in GALLEX and SAGE) to calculated 51Cr capture rate is R = 0.95 ± 0.07 (exp)   +0.04-0.03 (theory). Cross sections are also calculated for specific neutrino energies chosen so that a spline fit determines accurately the event rates in a gallium detector even if new physics changes the energy spectrum of solar neutrinos. Theoretical uncertainties are estimated for cross sections at specific energies and for standard neutrino energy spectra. Standard energy spectra are presented for pp and CNO neutrino sources in the appendices. Neutrino fluxes predicted by standard solar models, corrected for diffusion, have been in the range 120 SNU to 141 SNU since 1968.

Solar neutrinos: radiative corrections in neutrino-electron scattering experiments
Author(s): John N. Bahcall, Marc Kamionkowski, and Alberto Sirlin
Journal: Physical Review D, 51, 6146-6158 (June 1, 1995); astro-ph/9502003.

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Abstract: Radiative corrections to the electron recoil energy spectra and to total cross sections are computed for neutrino-electron scattering by solar neutrinos. Radiative corrections change monotonically the electron recoil spectrum for boron neutrinos, with the relative probability of observed recoil electrons being reduced by about 4 percent at the highest electron energies. For p-p and berylium neutrinos, the recoil spectra are not affected significantly. Total cross sections for solar neutrino-electron scattering are reduced by about 2 percent compared to previously computed values.

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