First real time detection of 7Be solar neutrinos by Borexino

First real time detection of 7Be solar neutrinos by Borexino

This Letter reports a direct measurement of the 7Be solar neutrino signal rate performed with the Borexino low background liquid scintillator detector at the Laboratori Nazionali del Gran Sasso. This is the first real-time spectral measurement of sub-MeV solar neutrinos. The result for 0.862 MeV 7Be...

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Veröffentlicht in:Physics letters. B 2008-01, Vol.658 (4), p.101-108
Hauptverfasser: Arpesella, C., Bellini, G., Benziger, J., Bonetti, S., Caccianiga, B., Calaprice, F., Dalnoki-Veress, F., D'Angelo, D., de Kerret, H., Derbin, A., Deutsch, M., Etenko, A., Fomenko, K., Ford, R., Franco, D., Freudiger, B., Galbiati, C., Gazzana, S., Giammarchi, M., Goeger-Neff, M., Goretti, A., Grieb, C., Hardy, S., Heusser, G., Ianni, Aldo, Ianni, Andrea, Joyce, M., Korga, G., Kryn, D., Laubenstein, M., Leung, M., Litvinovich, E., Lombardi, P., Ludhova, L., Machulin, I., Manuzio, G., Martemianov, A., Masetti, F., McCarty, K., Meroni, E., Miramonti, L., Misiaszek, M., Montanari, D., Monzani, M.E., Muratova, V., Niedermeier, L., Oberauer, L., Obolensky, M., Ortica, F., Pallavicini, M., Papp, L., Perasso, L., Pocar, A., Raghavan, R.S., Ranucci, G., Razeto, A., Sabelnikov, A., Salvo, C., Schönert, S., Simgen, H., Smirnov, O., Skorokhvatov, M., Sonnenschein, A., Sotnikov, A., Sukhotin, S., Suvorov, Y., Tarasenkov, V., Tartaglia, R., Testera, G., Vignaud, D., Vitale, S., Vogelaar, R.B., von Feilitzsch, F., Wojcik, M., Zaimidoroga, O., Zavatarelli, S., Zuzel, G.
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Cosmology and Extra-Galactic Astrophysics
High Energy Physics - Experiment
High Energy Physics - Phenomenology
Liquid scintillators
Low background detectors
Neutrino oscillations
Nuclear Experiment
Physics
Sciences of the Universe
Solar neutrinos
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Zusammenfassung:This Letter reports a direct measurement of the 7Be solar neutrino signal rate performed with the Borexino low background liquid scintillator detector at the Laboratori Nazionali del Gran Sasso. This is the first real-time spectral measurement of sub-MeV solar neutrinos. The result for 0.862 MeV 7Be neutrinos is 47±7stat±12sys counts/(day ⋅ 100 ton), consistent with predictions of Standard Solar Models and neutrino oscillations with LMA-MSW parameters.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2007.09.054