Journal Article

FZJ-2022-05959

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Improved Measurement of Solar Neutrinos from the Carbon-Nitrogen-Oxygen Cycle by Borexino and Its Implications for the Standard Solar Model

Appel, S. ; Bagdasarian, Z. ; Basilico, D. ; Bellini, G. ; Benziger, J. ; Biondi, R. ; Caccianiga, B. ; Calaprice, F. ; Caminata, A. ; Cavalcante, P. ; Chepurnov, A. ; D’Angelo, D. ; Derbin, A. ; Di Giacinto, A. ; Di Marcello, V. ; Ding, X. F. ; Di Ludovico, A. ; Di Noto, L. ; Drachnev, I. ; Franco, D. ; Galbiati, C. ; Ghiano, C. ; Giammarchi, M. ; Goretti, A. ; Göttel, A. S.FZJ* ; Gromov, M. ; Guffanti, D. ; Ianni, A. ; Ianni, A. ; Jany, A. ; Kobychev, V. ; Korga, G. ; Kumaran, S.FZJ* ; Laubenstein, M. ; Litvinovich, E. ; Lombardi, P. ; Lomskaya, I. ; Ludhova, L. (Corresponding author)FZJ* ; Lukyanchenko, G. ; Machulin, I. ; Martyn, J. ; Meroni, E. ; Miramonti, L. ; Misiaszek, M. ; Muratova, V. ; Nugmanov, R. ; Oberauer, L. ; Orekhov, V. ; Ortica, F. ; Pallavicini, M. ; Papp, L. ; Pelicci, L.FZJ* ; Penek, Ö.FZJ* ; Pietrofaccia, L. ; Pilipenko, N. ; Pocar, A. ; Raikov, G. ; Ranalli, M. T. ; Ranucci, G. ; Razeto, A. ; Re, A. ; Redchuk, M. ; Rossi, N. ; Schönert, S. ; Semenov, D. ; Settanta, G. ; Skorokhvatov, M. ; Singhal, A.FZJ* ; Smirnov, O. ; Sotnikov, A. ; Tartaglia, R. ; Testera, G. ; Unzhakov, E. ; Villante, F. L. ; Vishneva, A. ; Vogelaar, R. B. ; von Feilitzsch, F. ; Wojcik, M. ; Wurm, M. ; Zavatarelli, S. ; Zuber, K. ; Zuzel, G.

2022
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/33232  doi:10.1103/PhysRevLett.129.252701

Abstract: We present an improved measurement of the carbon-nitrogen-oxygen (CNO) solar neutrino interaction rate at Earth obtained with the complete Borexino Phase-III dataset. The measured rate, RCNO=6.7+2.0−0.8  counts/(day×100  tonnes), allows us to exclude the absence of the CNO signal with about 7σ C.L. The correspondent CNO neutrino flux is 6.6+2.0−0.9×108  cm−2 s−1, taking into account the neutrino flavor conversion. We use the new CNO measurement to evaluate the C and N abundances in the Sun with respect to the H abundance for the first time with solar neutrinos. Our result of NCN=(5.78+1.86−1.00)×10−4 displays a ∼2σ tension with the “low-metallicity” spectroscopic photospheric measurements. Furthermore, our result used together with the 7Be and 8B solar neutrino fluxes, also measured by Borexino, permits us to disfavor at 3.1σ C.L. the “low-metallicity” standard solar model B16-AGSS09met as an alternative to the “high-metallicity” standard solar model B16-GS98.

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Contributing Institute(s):

1. Experimentelle Hadrondynamik (IKP-2)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)

Appears in the scientific report 2022

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Database coverage:
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