Spectroscopy of geoneutrinos from 2056 days of Borexino data
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Spectroscopy of geoneutrinos from 2056 days of Borexino data

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;
physical review d 2015 Vol. 92 pp. 031101-
187
collaboration2015physicalspectroscopy

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.

Keywords

uncertainty proton borexino stat taking radiogenic 5.9σ geoneutrino

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DOI:
10.1103/physrevd.92.031101
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https://sciprofiles.com/publication/view/8ab7e778d...

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ID: 270422
Ref Key: collaboration2015physicalspectroscopy
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