Improved measurement of B8 solar neutrinos with 1.5 kt·y of Borexino exposure

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

doi:10.1103/physrevd.101.062001

Improved measurement of B8 solar neutrinos with 1.5 kt·y of Borexino exposure

Clicks: 238

ID: 274364

2020

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Abstract

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We report on an improved measurement of the B8 solar neutrino interaction rate with the Borexino experiment at the Laboratori Nazionali del Gran Sasso. Neutrinos are detected via their elastic scattering on electrons in a large volume of liquid scintillator. The measured rate of scattered electrons above 3 MeV of energy is 0.223−0.016+0.015(stat) −0.006+0.006(syst) cpd/100 t, which corresponds to an observed solar neutrino flux assuming no neutrino flavor conversion of ΦB8ES=2.57−0.18+0.17(stat) −0.07+0.07(syst)×106 cm−2 s−1. This measurement exploits the active volume of the detector in almost its entirety for the first time, and takes advantage of a reduced radioactive background following the 2011 scintillator purification campaign and of novel analysis tools providing a more precise modeling of the background. Additionally, we set a new limit on the interaction rate of solar hep neutrinos, searched via their elastic scattering on electrons as well as their neutral current-mediated inelastic scattering on carbon, C12(ν,ν′)C*12 (Eγ=15.1 MeV).

Reference Key	collaboration2020physicalimproved Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors	M. Agostini,K. Altenmüller,S. Appel,V. Atroshchenko,Z. Bagdasarian,D. Basilico,G. Bellini,J. Benziger,D. Bick,D. Bravo,B. Caccianiga,F. Calaprice,A. Caminata,P. Cavalcante,A. Chepurnov,D. D’Angelo,S. Davini,A. Derbin,A. Di Giacinto,V. Di Marcello,X. F. Ding,A. Di Ludovico,L. Di Noto,I. Drachnev,A. Formozov,D. Franco,C. Galbiati,M. Gschwender,C. Ghiano,M. Giammarchi,A. Goretti,M. Gromov,D. Guffanti,C. Hagner,T. Houdy,E. Hungerford,Aldo Ianni,Andrea Ianni,A. Jany,D. Jeschke,V. Kobychev,G. Korga,S. Kumaran,T. Lachenmaier,M. Laubenstein,E. Litvinovich,P. Lombardi,I. Lomskaya,L. Ludhova,G. Lukyanchenko,I. Machulin,S. Marcocci,J. Martyn,E. Meroni,M. Meyer,L. Miramonti,M. Misiaszek,V. Muratova,B. Neumair,M. Nieslony,R. Nugmanov,L. Oberauer,V. Orekhov,F. Ortica,M. Pallavicini,L. Papp,Ö. Penek,L. Pietrofaccia,N. Pilipenko,A. Pocar,G. Raikov,M. T. Ranalli,G. Ranucci,A. Razeto,A. Re,M. Redchuk,A. Romani,N. Rossi,S. Rottenanger,S. Schönert,D. Semenov,M. Skorokhvatov,O. Smirnov,A. Sotnikov,Y. Suvorov,R. Tartaglia,G. Testera,J. Thurn,E. Unzhakov,A. Vishneva,R. B. Vogelaar,F. von Feilitzsch,M. Wojcik,M. Wurm,S. Zavatarelli,K. Zuber,G. Zuzel,Borexino Collaboration;M. Agostini;K. Altenmüller;S. Appel;V. Atroshchenko;Z. Bagdasarian;D. Basilico;G. Bellini;J. Benziger;D. Bick;D. Bravo;B. Caccianiga;F. Calaprice;A. Caminata;P. Cavalcante;A. Chepurnov;D. D’Angelo;S. Davini;A. Derbin;A. Di Giacinto;V. Di Marcello;X. F. Ding;A. Di Ludovico;L. Di Noto;I. Drachnev;A. Formozov;D. Franco;C. Galbiati;M. Gschwender;C. Ghiano;M. Giammarchi;A. Goretti;M. Gromov;D. Guffanti;C. Hagner;T. Houdy;E. Hungerford;Aldo Ianni;Andrea Ianni;A. Jany;D. Jeschke;V. Kobychev;G. Korga;S. Kumaran;T. Lachenmaier;M. Laubenstein;E. Litvinovich;P. Lombardi;I. Lomskaya;L. Ludhova;G. Lukyanchenko;I. Machulin;S. Marcocci;J. Martyn;E. Meroni;M. Meyer;L. Miramonti;M. Misiaszek;V. Muratova;B. Neumair;M. Nieslony;R. Nugmanov;L. Oberauer;V. Orekhov;F. Ortica;M. Pallavicini;L. Papp;Ö. Penek;L. Pietrofaccia;N. Pilipenko;A. Pocar;G. Raikov;M. T. Ranalli;G. Ranucci;A. Razeto;A. Re;M. Redchuk;A. Romani;N. Rossi;S. Rottenanger;S. Schönert;D. Semenov;M. Skorokhvatov;O. Smirnov;A. Sotnikov;Y. Suvorov;R. Tartaglia;G. Testera;J. Thurn;E. Unzhakov;A. Vishneva;R. B. Vogelaar;F. von Feilitzsch;M. Wojcik;M. Wurm;S. Zavatarelli;K. Zuber;G. Zuzel;Borexino Collaboration;
Journal	physical review d
Year	2020
DOI	10.1103/physrevd.101.062001 Searching for DOI...
URL	https://sciprofiles.com/publication/view/198d7e254871c4926574775f68cd64b3 https://doi.org/10.1103/physrevd.101.062001
Keywords	solar neutrino stat interaction rate elastic scattering on electrons

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