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Discriminating among Earth composition models using geo-antineutrinos | | H. Nunokawa
; W. J. C. Teves
; R. Zukanovich Funchal
; | | Date: |
18 Aug 2003 | | Journal: | JHEP 0311 (2003) 020 | | Subject: | High Energy Physics - Phenomenology; Geophysics | hep-ph hep-ex nucl-ex physics.geo-ph | | Abstract: | It has been estimated that the entire Earth generates heat corresponding to about 40 TW (equivalent to 10,000 nuclear power plants) which is considered to originate mainly from the radioactive decay of elements like U, Th and K, deposited in the crust and mantle of the Earth. Radioactivity of these elements produce not only heat but also antineutrinos (called geo-antineutrinos) which can be observed by terrestrial detectors. We investigate the possibility of discriminating among Earth composition models predicting different total radiogenic heat generation, by observing such geo-antineutrinos at Kamioka and Gran Sasso, assuming KamLAND and Borexino (type) detectors, respectively, at these places. By simulating the future geo-antineutrino data as well as reactor antineutrino background contributions, we try to establish to which extent we can discriminate among Earth composition models for given exposures (in units of kt$cdot$ yr) at these two sites on our planet. We use also information on neutrino mixing parameters coming from solar neutrino data as well as KamLAND reactor antineutrino data, in order to estimate the number of geo-antineutrino induced events. | | Source: | arXiv, hep-ph/0308175 | | Services: | Forum | Review | PDF | Favorites | |
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