Microscopic calculation of neutrino capture rates in 69,71Ga and the detection of solar and galactic neutrinos

Details Microscopic calculation of neutrino capture rates in 69,71Ga and the detection of solar and galactic neutrinos Microscopic calculation of neutrino capture rates in 69,71Ga and the detection of solar and galactic neutrinos

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvc..33.1263g&link_type=abstract

Physical Review C (Nuclear Physics), Volume 33, Issue 4, April 1986, pp.1263-1269

Physics

Nuclear Physics

11

Neutrino Scattering, 59<=A<=89

Scientific paper

Calculations of the neutrino capture cross sections for 69,71Ga based on a microscopic treatment of the Gamow-Teller matrix elements are presented. A strong enhancement of the cross section for highly energetic neutrinos is found compared to previous phenomenological estimates. As a consequence, the present assumptions on the signal from 8B neutrinos in 71Ga have to be revised. A non-negligible solar model dependent background of 8B neutrinos has to be expected in a gallium solar neutrino experiment together with the pp signal. The calculations yield a larger sensitivity of the gallium detector than assumed previously for galactic neutrinos.

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