Spectroscopy of geoneutrinos from 2056 days of Borexino data

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ID: 270422
2015
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Abstract
We report an improved geoneutrino measurement with Borexino from 2056 days of data taking. The present exposure is (5.5±0.3)×1031 proton×yr. 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 3.6×10−9 (5.9σ). 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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Authors M. Agostini,S. Appel,G. Bellini,J. Benziger,D. Bick,G. Bonfini,D. Bravo,B. Caccianiga,F. Calaprice,A. Caminata,P. Cavalcante,A. Chepurnov,K. Choi,D. D’Angelo,S. Davini,A. Derbin,Lea Di Noto,I. Drachnev,A. Empl,A. Etenko,G. Fiorentini,K. Fomenko,D. Franco,F. Gabriele,C. Galbiati,C. Ghiano,M. Giammarchi,M. Goeger-Neff,A. Goretti,M. Gromov,C. Hagner,T. Houdy,E. Hungerford,Aldo Ianni,Andrea Ianni,K. Jedrzejczak,M. Kaiser,V. Kobychev,D. Korablev,G. Korga,D. Kryn,M. Laubenstein,B. Lehnert,E. Litvinovich,F. Lombardi,L. Ludhova,Georgy Lukyanchenko,I. Machulin,S. Manecki,W. Maneschg,F. Mantovani,S. Marcocci,E. Meroni,M. Meyer,L. Miramonti,M. Misiaszek,M. Montuschi,P. Mosteiro,V. Muratova,B. Neumair,L. Oberauer,M. Obolensky,F. Ortica,K. Otis,L. Pagani,M. Pallavicini,L. Papp,L. Perasso,A. Pocar,G. Ranucci,Alessandro Razeto,Alessandra Carlotta Re,B. Ricci,A. Romani,R. Roncin,N. Rossi,Stefan Schönert,D. Semenov,H. Simgen,M. Skorokhvatov,O. Smirnov,Albert Sotnikov,S. Sukhotin,Y. Suvorov,R. Tartaglia,G. Testera,J. Thurn,M. Toropova,E. Unzhakov,R. B. Vogelaar,F. Von Feilitzsch,H. Wang,S. Weinz,J. Winter,M. Wojcik,Michael Wurm,Z. Yokley,O. Zaimidoroga,S. Zavatarelli,K. Zuber,G. Zuzel,Borexino Collaboration;M. Agostini;S. Appel;G. Bellini;J. Benziger;D. Bick;G. Bonfini;D. Bravo;B. Caccianiga;F. Calaprice;A. Caminata;P. Cavalcante;A. Chepurnov;K. Choi;D. D’Angelo;S. Davini;A. Derbin;Lea Di Noto;I. Drachnev;A. Empl;A. Etenko;G. Fiorentini;K. Fomenko;D. Franco;F. Gabriele;C. Galbiati;C. Ghiano;M. Giammarchi;M. Goeger-Neff;A. Goretti;M. Gromov;C. Hagner;T. Houdy;E. Hungerford;Aldo Ianni;Andrea Ianni;K. Jedrzejczak;M. Kaiser;V. Kobychev;D. Korablev;G. Korga;D. Kryn;M. Laubenstein;B. Lehnert;E. Litvinovich;F. Lombardi;L. Ludhova;Georgy Lukyanchenko;I. Machulin;S. Manecki;W. Maneschg;F. Mantovani;S. Marcocci;E. Meroni;M. Meyer;L. Miramonti;M. Misiaszek;M. Montuschi;P. Mosteiro;V. Muratova;B. Neumair;L. Oberauer;M. Obolensky;F. Ortica;K. Otis;L. Pagani;M. Pallavicini;L. Papp;L. Perasso;A. Pocar;G. Ranucci;Alessandro Razeto;Alessandra Carlotta Re;B. Ricci;A. Romani;R. Roncin;N. Rossi;Stefan Schönert;D. Semenov;H. Simgen;M. Skorokhvatov;O. Smirnov;Albert Sotnikov;S. Sukhotin;Y. Suvorov;R. Tartaglia;G. Testera;J. Thurn;M. Toropova;E. Unzhakov;R. B. Vogelaar;F. Von Feilitzsch;H. Wang;S. Weinz;J. Winter;M. Wojcik;Michael Wurm;Z. Yokley;O. Zaimidoroga;S. Zavatarelli;K. Zuber;G. Zuzel;Borexino Collaboration;
Journal physical review d
Year 2015
DOI
10.1103/physrevd.92.031101
URL
https://sciprofiles.com/publication/view/8ab7e778d24c621dcab709480ff2fcbe
Keywords
uncertainty proton borexino stat taking radiogenic 5.9σ geoneutrino

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