Mantle geoneutrinos in KamLAND and Borexino

被引：38

作者：

Fiorentini, G. ^{[1
,2
,3
]}

Fogli, G. L. ^{[4
,5
]}

Lisi, E. ^{[5
]}

Mantovani, F. ^{[1
,3
]}

Rotunno, A. M. ^{[4
]}

机构：

[1] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy

[3] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[4] Dipartimento Interateneo Fis Michelangelo Merlin, I-70126 Bari, Italy

[5] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 03期

关键词：

CHEMICAL-COMPOSITION;

D O I：

10.1103/PhysRevD.86.033004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The KamLAND and Borexino experiments have observed, each at similar to 4 sigma 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. To this purpose, we analyze in detail the experimental Th and U geoneutrino event rates in KamLAND and Borexino, including neutrino oscillation effects. We estimate the crustal flux at the two detector sites, using state-of-the-art information about the Th and U distribution on global and local scales. We find that crust-subtracted signals show hints of a residual mantle component, emerging at similar to 2.4 sigma level by combining the KamLAND and Borexino data. The inferred mantle flux slightly favors scenarios with relatively high Th and U abundances, within +/- 1 sigma uncertainties comparable to the spread of predictions from recent mantle models.

引用

页数：11

共 33 条

[1] THE CHEMICAL-COMPOSITION OF THE EARTH [J].

ALLEGRE, CJ ;

POIRIER, JP ;

HUMLER, E ;

HOFMANN, AW .

EARTH AND PLANETARY SCIENCE LETTERS, 1995, 134 (3-4) :515-526

[2] Observation of Electron-Antineutrino Disappearance at Daya Bay [J].

An, F. P. ;

Bai, J. Z. ;

Balantekin, A. B. ;

Band, H. R. ;

Beavis, D. ;

Beriguete, W. ;

Bishai, M. ;

Blyth, S. ;

Boddy, K. ;

Brown, R. L. ;

Cai, B. ;

Cao, G. F. ;

Cao, J. ;

Carr, R. ;

Chan, W. T. ;

Chang, J. F. ;

Chang, Y. ;

Chasman, C. ;

Chen, H. S. ;

Chen, H. Y. ;

Chen, S. J. ;

Chen, S. M. ;

Chen, X. C. ;

Chen, X. H. ;

Chen, X. S. ;

Chen, Y. ;

Chen, Y. X. ;

Cherwinka, J. J. ;

Chu, M. C. ;

Cummings, J. P. ;

Deng, Z. Y. ;

Ding, Y. Y. ;

Diwan, M. V. ;

Dong, L. ;

Draeger, E. ;

Du, X. F. ;

Dwyer, D. A. ;

Edwards, W. R. ;

Ely, S. R. ;

Fang, S. D. ;

Fu, J. Y. ;

Fu, Z. W. ;

Ge, L. Q. ;

Ghazikhanian, V. ;

Gill, R. L. ;

Goett, J. ;

Gonchar, M. ;

Gong, G. H. ;

Gong, H. ;

Gornushkin, Y. A. .

PHYSICAL REVIEW LETTERS, 2012, 108 (17)

[3]

ANDERSON DL, 2007, NEW THEORY EARTH, P1

[4]

[Anonymous], 2006, EARTH MOON PLANETS

[5] Experimental investigation of geologically produced antineutrinos with KamLAND [J].

Araki, T ;

Enomoto, S ;

Furuno, K ;

Gando, Y ;

Ichimura, K ;

Ikeda, H ;

Inoue, K ;

Kishimoto, Y ;

Koga, M ;

Koseki, Y ;

Maeda, T ;

Mitsui, T ;

Motoki, M ;

Nakajima, K ;

Ogawa, H ;

Ogawa, M ;

Owada, K ;

Ricol, JS ;

Shimizu, I ;

Shirai, J ;

Suekane, F ;

Suzuki, A ;

Tada, K ;

Takeuchi, S ;

Tamae, K ;

Tsuda, Y ;

Watanabe, H ;

Busenitz, J ;

Classen, T ;

Djurcic, Z ;

Keefer, G ;

Leonard, D ;

Piepke, A ;

Yakushev, E ;

Berger, BE ;

Chan, YD ;

Decowski, MP ;

Dwyer, DA ;

Freedman, SJ ;

Fujikawa, BK ;

Goldman, J ;

Gray, F ;

Heeger, KM ;

Hsu, L ;

Lesko, KT ;

Luk, KB ;

Murayama, H ;

O'Donnell, T ;

Poon, AWP ;

Steiner, HM .

NATURE, 2005, 436 (7050) :499-503

[6] The K/U ratio of the silicate Earth: Insights into mantle composition, structure and thermal evolution [J].

Arevalo, Ricardo, Jr. ;

McDonough, William F. ;

Luong, Mario .

EARTH AND PLANETARY SCIENCE LETTERS, 2009, 278 (3-4) :361-369

[7]

Batygov M., NEUTRINO GEOPHYS, P183

[8] Observation of geo-neutrinos [J].

Bellini, G. ;

Benziger, J. ;

Bonetti, S. ;

Avanzini, M. Buizza ;

Caccianiga, B. ;

Cadonati, L. ;

Calaprice, F. ;

Carraro, C. ;

Chavarria, A. ;

Dalnoki-Veress, F. ;

D'Angelo, D. ;

Davini, S. ;

de Kerret, H. ;

Dubin, A. ;

Etenko, A. ;

Fiorentini, G. ;

Fomenko, K. ;

Franco, D. ;

Galbiati, C. ;

Gazzana, S. ;

Ghiano, C. ;

Giammarchi, M. ;

Goeger-Neff, M. ;

Goretti, A. ;

Guardincerri, E. ;

Hardy, S. ;

Ianni, Aldo ;

Ianni, Andrea ;

Joyce, M. ;

Kobychev, V. V. ;

Koshio, Y. ;

Korga, G. ;

Kryn, D. ;

Laubenstein, M. ;

Leung, M. ;

Lewke, T. ;

Litvinovich, E. ;

Loer, B. ;

Lombardi, P. ;

Ludhova, L. ;

Machulin, I. ;

Manecki, S. ;

Maneschg, W. ;

Manuzio, G. ;

Meindl, Q. ;

Meroni, E. ;

Miramonti, L. ;

Misiaszek, M. ;

Montanari, D. ;

Muratova, V. .

PHYSICS LETTERS B, 2010, 687 (4-5) :299-304

[9] REVIEW OF PARTICLE PHYSICS Particle Data Group [J].

Beringer, J. ;

Arguin, J. -F. ;

Barnett, R. M. ;

Copic, K. ;

Dahl, O. ;

Groom, D. E. ;

Lin, C. -J. ;

Lys, J. ;

Murayama, H. ;

Wohl, C. G. ;

Yao, W. -M. ;

Zyla, P. A. ;

Amsler, C. ;

Antonelli, M. ;

Asner, D. M. ;

Baer, H. ;

Band, H. R. ;

Basaglia, T. ;

Bauer, C. W. ;

Beatty, J. J. ;

Belousov, V. I. ;

Bergren, E. ;

Bernardi, G. ;

Bertl, W. ;

Bethke, S. ;

Bichsel, H. ;

Biebel, O. ;

Blucher, E. ;

Blusk, S. ;

Brooijmans, G. ;

Buchmueller, O. ;

Cahn, R. N. ;

Carena, M. ;

Ceccucci, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Cowan, G. ;

D'Ambrosio, G. ;

Damour, T. ;

de Florian, D. ;

de Gouvea, A. ;

DeGrand, T. ;

de Jong, P. ;

Dissertori, G. ;

Dobrescu, B. ;

Doser, M. ;

Drees, M. ;

Edwards, D. A. ;

Eidelman, S. .

PHYSICAL REVIEW D, 2012, 86 (01)

[10] The Solar System primordial lead [J].

Blichert-Toft, Janne ;

Zanda, Brigitte ;

Ebel, Denton S. ;

Albarede, Francis .

EARTH AND PLANETARY SCIENCE LETTERS, 2010, 300 (1-2) :152-163

← 1 2 3 4 →