Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-28
Phys.Rev.C56:3391-3409,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
57 pages, ReVTeX file. Accepted for publication in Phys. Rev. C. Viewgraphs and numerical tables of neutrino spectra and cross
Scientific paper
10.1103/PhysRevC.56.3391
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 fusing 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.
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