Comprehensive geoneutrino analysis with Borexino

Agostini, M.; Altenmüller, K.; Appel, S.; Atroshchenko, V.; Bagdasarian, Z.; Basilico, D.; Bellini, G.; Benziger, J.; Bick, D.; Bonfini, G.; Bravo, D.; Caccianiga, B.; Calaprice, F.; Caminata, A.; Cappelli, L.; Cavalcante, P.; Cavanna, F.; Chepurnov, A.; Choi, K.; D'Angelo, D.; Davini, S.; Derbin, A.; Giacinto, A.D.; Marcello, V.D.; Ding, X.F.; Ludovico, A.D.; Noto, L.D.; Drachnev, I.; Fiorentini, G.; Formozov, A.; Franco, D.; Gabriele, F.; Galbiati, C.; Gschwender, M.; Ghiano, C.; Giammarchi, M.; Goretti, A.; Gromov, M.; Guffanti, D.; Hagner, C.; Hungerford, E.; Aldo, I.; Andrea, I.; Jany, A.; Jeschke, D.; Kumaran, S.; Kobychev, V.; Korga, G.; Lachenmaier, T.; Lasserre, T.; Laubenstein, M.; Litvinovich, E.; Lombardi, P.; Lomskaya, I.; Ludhova, L.; Lukyanchenko, G.; Lukyanchenko, L.; Machulin, I.; Mantovani, F.; Manuzio, G.; Marcocci, S.; Maricic, J.; Martyn, J.; Meroni, E.; Meyer, M.; Miramonti, L.; Misiaszek, M.; Montuschi, M.; Muratova, V.; Neumair, B.; Nieslony, M.; Oberauer, L.; Onillon, A.; Orekhov, V.; Ortica, F.; Pallavicini, M.; Papp, L.; Penek, Ö.; Pietrofaccia, L.; Pilipenko, N.; Pocar, A.; Raikov, G.; Ranalli, M.T.; Ranucci, G.; Razeto, A.; Re, A.; Redchuk, M.; Ricci, B.; Romani, A.; Rossi, N.; Rottenanger, S.; Schönert, S.; Semenov, D.; Skorokhvatov, M.; Smirnov, O.; Sotnikov, A.; Strati, V.; Suvorov, Y.; Tartaglia, R.; Testera, G.; Thurn, J.; Unzhakov, E.; Vishneva, A.; Vivier, M.; Vogelaar, R.B.; von Feilitzsch, F.; Wojcik, M.; Wurm, M.; Zaimidoroga, O.; Zavatarelli, S.; Zuber, K.; Zuzel, G.

Авторы: Agostini M., Altenmüller K., Appel S., Atroshchenko V., Bagdasarian Z., Basilico D., Bellini G., Benziger J., Bick D., Bonfini G., Bravo D., Caccianiga B., Calaprice F., Caminata A., Cappelli L., Cavalcante P., Cavanna F., Chepurnov A., Choi K., D'Angelo D., Davini S., Derbin A., Giacinto A.Di, Marcello V.Di, Ding X.F., Ludovico A.Di, Noto L.Di, Drachnev I., Fiorentini G., Formozov A., Franco D., Gabriele F., Galbiati C., Gschwender M., Ghiano C., Giammarchi M., Goretti A., Gromov M., Guffanti D., Hagner C., Hungerford E., Aldo Ianni, Andrea Ianni, Jany A., Jeschke D., Kumaran S., Kobychev V., Korga G., Lachenmaier T., Lasserre T., Laubenstein M., Litvinovich E., Lombardi P., Lomskaya I., Ludhova L., Lukyanchenko G., Lukyanchenko L., Machulin I., Mantovani F., Manuzio G., Marcocci S., Maricic J., Martyn J., Meroni E., Meyer M., Miramonti L., Misiaszek M., Montuschi M., Muratova V., Neumair B., Nieslony M., Oberauer L., Onillon A., Orekhov V., Ortica F., Pallavicini M., Papp L., Penek Ö., Pietrofaccia L., Pilipenko N., Pocar A., Raikov G., Ranalli M.T., Ranucci G., Razeto A., Re A., Redchuk M., Ricci B., Romani A., Rossi N., Rottenanger S., Schönert S., Semenov D., Skorokhvatov M., Smirnov O., Sotnikov A., Strati V., Suvorov Y., Tartaglia R., Testera G., Thurn J., Unzhakov E., Vishneva A., Vivier M., Vogelaar R.B., von Feilitzsch F., Wojcik M., Wurm M., Zaimidoroga O., Zavatarelli S., Zuber K., Zuzel G.
Журнал: Physical Review D
Том: 101
Номер: 1
Год издания: 2020
Издательство: American Physical Society
Местоположение издательства: United States
Первая страница: 012009
DOI: 10.1103/PhysRevD.101.012009
Аннотация: This paper presents a geoneutrino measurement using 3262.74 days of data taken with the Borexino detector at LNGS in Italy. By observing 52.6+9.4−8.6(stat)+2.7−2.1(sys) geoneutrinos (68% interval) from 238U and 232Th, a signal of 47.0+8.4−7.7(stat)+2.4−1.9(sys) TNU with +18.3−17.2% total precision was obtained. This result assumes the same Th/U mass ratio found in chondritic CI meteorites but compatible results were found when contributions from 238U and 232Th were fit as free parameters. Antineutrino background from reactors is fit unconstrained and found compatible with the expectations. The null-hypothesis of observing a signal from the mantle is excluded at a 99.0% C.L. when exploiting the knowledge of the local crust. Measured mantle signal of 21.2+9.6−9.0(stat)+1.1−0.9(sys) TNU corresponds to the production of a radiogenic heat of 24.6+11.1−10.4 TW (68% interval) from 238U and 232Th in the mantle. Assuming 18% contribution of 40K in the mantle and 8.1+1.9−1.4 TW of radiogenic heat of the lithosphere, the Borexino estimate of the total Earth radiogenic heat is 38.2+13.6−12.7 TW, corresponding to a convective Urey ratio of 0.78+0.41−0.28. These values are compatible with different geological models, however there is a 2.4σ tension with those which predict the lowest concentration of heat-producing elements. By fitting the data with a constraint on the reactor antineutrino background, the existence of a hypothetical georeactor at the center of the Earth having power greater than 2.4 TW at 95% C.L. is excluded. Particular attention is given to all analysis details, which should be of interest for the next generation geoneutrino measurements.
Добавил в систему: Громов Максим Борисович

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