Beta and neutrino spectra in the decay of 8B

Details Beta and neutrino spectra in the decay of 8B Beta and neutrino spectra in the decay of 8B

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvc..36..298n&link_type=abstract

Physical Review C (Nuclear Physics), Volume 36, Issue 1, July 1987, pp.298-302

Physics

Nuclear Physics

11

Weak-Interaction And Lepton Aspects

Scientific paper

We have measured the upper range of the positron momentum spectrum from the decay of 8B. This spectrum is compared to that predicted on the basis of various available measured alpha spectra from the breakup of the daughter 8Be nucleus. Recoil order corrections are included in the comparison. After choosing the most consistent alpha spectrum we infer the 8B neutrino spectrum which we integrate over the 37Cl(νe,e-) 37Ar cross section. We obtain (1.07+/-0.02)×10-42 cm2 for this average cross section where the error is an estimate of the rms (i.e., 1σ) statistical uncertainty from our positron spectrum measurement. This value is appropriate for predicting the solar neutrino capture rate in 37Cl detectors. Systematic errors in the determination of the integrated cross section are discussed.

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