Fiorentini, G. and Fogli, G. L. and Lisi, E. and Mantovani, F. and Rotunno, A. M. and Xhixha, G. (2013) Exploring the Earth’s mantle with geoneutrinos. Il nuovo cimento C, 36 (1). pp. 239-242. ISSN 1826-9885
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Abstract
The KamLAND and Borexino experiments have observed, each at ∼ 4σ level, signals of electron antineutrinos produced in the decay chains of thorium and uranium in the Earth’s crust and mantle (Th and U geoneutrinos). Various pieces of geochemical and geophysical information allow an estimation of the crustal geoneutrino flux components with relatively small uncertainties. The mantle component may then be inferred by subtracting the estimated crustal flux from the measured total flux. On the base of this approach we find that crustsubtracted signals show hints of a residual mantle component, emerging at ∼ 2.4σ level by combining the KamLAND and Borexino data. The inferred mantle flux slightly favors scenarios with relatively high Th and U abundances, within ±1σ uncertainties comparable to the spread of predictions from recent mantle models.
| Item Type: | Article |
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| Uncontrolled Keywords: | Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors ; Structure of the crust and upper mantle |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 03 May 2020 12:07 |
| Last Modified: | 03 May 2020 12:07 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/18102 |
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