Spectroscopy of geoneutrinos from 2056 days of Borexino data
- Agostini, M.
- Appel, S.
- Bellini, G.
- Benziger, J.
- Bick, D.
- Bonfini, G.
- Bravo, D.
- Caccianiga, B.
- Calaprice, F.
- Caminata, A.
- Cavalcante, P.
- Chepurnov, A.
- Choi, K.
- D\u2019Angelo, D.
- Davini, S.
- Derbin, A.
- Di Noto, L.
- Drachnev, I.
- Empl, A.
- Etenko, A.
- Fiorentini, G.
- Fomenko, K.
- Franco, D.
- Gabriele, F.
- Galbiati, C.
- Ghiano, Chiara
- Giammarchi, M.
- Goeger Neff, M.
- Goretti, A.
- Gromov, M.
- Hagner, C.
- Houdy, T.
- Hungerford, E.
- Ianni, Aldo
- Ianni, Andrea
- Jedrzejczak, K.
- Kaiser, M.
- Kobychev, V.
- Korablev, D.
- Korga, G.
- Kryn, D.
- Laubenstein, M.
- Lehnert, B.
- Litvinovich, E.
- Lombardi, F.
- Lombardi, P.
- Ludhova, L.
- Lukyanchenko, G.
- Machulin, I.
- Manecki, S.
- Maneschg, W.
- Mantovani, F.
- Marcocci, S.
- Meroni, E.
- Meyer, M.
- Miramonti, L.
- Misiaszek, M.
- Montuschi, M.
- Mosteiro, P.
- Muratova, V.
- Neumair, B.
- Oberauer, L.
- Obolensky, M.
- Ortica, F.
- Otis, K.
- Pagani, Luca
- Pallavicini, Marco
- Papp, L.
- Perasso, L.
- Pocar, A.
- Ranucci, G.
- Razeto, A.
- Re, A.
- Ricci, B.
- Romani, A.
- Roncin, R.
- Rossi, N.
- Sch\uf6nert, S.
- Semenov, D.
- Simgen, H.
- Skorokhvatov, M.
- Smirnov, O.
- Sotnikov, A.
- Sukhotin, S.
- Suvorov, Y.
- Tartaglia, R.
- Testera, G.
- Thurn, J.
- Toropova, M.
- Unzhakov, E.
- Vogelaar, R. \u2009. b.
- von Feilitzsch, F.
- Wang, H.
- Weinz, S.
- Winter, J.
- Wojcik, M.
- Wurm, M.
- Yokley, Z.
- Zaimidoroga, O.
- Zavatarelli, S.
- Zuber, K.
- Zuzel, G.
DOIAbstract
We report an improved geoneutrino measurement with Borexino from 2056 days of data taking. The present exposure is (5.5\ub10.3) 71031 proton 7yr. Assuming a chondritic Th/U mass ratio of 3.9, we obtain 23.7-5.7+6.5(stat)-0.6+0.9(sys) geoneutrino events. The null observation of geoneutrinos with Borexino alone has a probability of 3.6 710-9 (5.9\u3c3). A geoneutrino signal from the mantle is obtained at 98% C.L. The radiogenic heat production for U and Th from the present best-fit result is restricted to the range 23-36 TW, taking into account the uncertainty on the distribution of heat producing elements inside the Earth
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