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KamLAND results and the radiogenic terrestrial heat

Gianni Fiorentini·Marcello Lissia·Fabio Mantovani·Barbara Ricci
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Abstract

We find that recent results from the KamLAND collaboration on geologically produced antineutrinos, N(U+Th) = 28+16-15 events, correspond to a radiogenic heat production from Uranium and Thorium decay chains H(U+Th) = 38+35-33 TW. The 99% confidence limit on the geo-neutrino signal translates into the upper bound H(U+Th) < 162 TW, which is much weaker than that claimed by KamLAND, H(U+Th) < 60 TW, based on a too narrow class of geological models. We also performed an analysis of KamLAND data including recent high precision measurements of the C13(α,n)O16 cross section. The result, N(U+Th) = 31+14-13, corroborates the evidence (approx 2.5σ) for geo-neutrinos in KamLAND data.

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Gianni Fiorentini, Marcello Lissia, Fabio Mantovani, Barbara Ricci. 2005-09-27. KamLAND results and the radiogenic terrestrial heat. https://doi.org/10.1016/j.physletb.2005.09.067

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