Measurement of 7Be and 8B solar neutrinos with BOREXINO

Zavatarelli, S. and Bellini, G. and Benziger, J. and Bonetti, S. and Buizza-Avanzini, M. and Caccianiga, B. and Cadonati, L. and Calaprice, F. and Carraro, C. and Chavarria, A. and Dalnoki-Veress, F. and D'Angelo, D. and Davini, S. and de Kerret, H. and Derbin, A. and Etenko, A. and Fomenko, K. and Franco, D. and Galbiati, C. and Gazzana, S. and Giammarchi, M. and Goeger-Neff, M. and Goretti, A. and Hardy, S. and Ianni, Aldo and Ianni, Andrea and Joyce, M. and Kobychev, V. and Korga, G. and Kryn, D. and Laubenstein, M. and Leung, M. and Lewke, T. and Litninovich, E. and Loer, B. and Lombardi, P. and Ludhova, L. and Machulin, I. and Manecki, S. and Maneschg, W. and Manuzio, G. and Masetti, F. and McCarty, K. and Meindl, Q. and Meroni, E. and Miramonti, L. and Misiaszek, M. and Montanari, D. and Muratova, V. and Oberauer, L. and Obolensky, M. and Ortica, F. and Pallavicini, M. and Papp, L. and Perasso, L. and Perasso, S. and Pocar, A. and Raghavan, R. S. and Ranucci, G. and Razeto, A. and Risso, P. and Romani, A. and Rountree, D. and Sabelnikov, A. and Saldanha, R. and Salvo, C. and Schonert, S. and Simgen, H. and Skorokhvatov, M. and Smirnov, O. and Sotnikov, A. and Sukhotin, S. and Suvorov, Y. and Tartaglia, R. and Testera, G. and Vignaud, D. and Vogelaar, R. B. and von Feilitzsch, F. and Wojcik, M. and Wurm, M. and Zaimidoroga, O. and Zuzel, G. (2009) Measurement of 7Be and 8B solar neutrinos with BOREXINO. Il nuovo cimento C, 32 (5\6). pp. 37-44. ISSN 1826-9885

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Borexino is a real-time liquid-scintillator detector for low-energy neutrino spectroscopy located at the Gran Sasso National Laboratories (Italy). Thanks to the unprecedented radiopurity of the target mass it is providing the first direct and simultaneous measurement of the solar neutrino survival probability in both vacuum-dominated (7Be ν) and matter-enhanced regions (8B ν) by a single experiment. The measured interaction rates for both the 7Be and 8B solar neutrinos are in fair agreement with the SSM predictions in case of the LMA-MSW oscillation solution and a further confirmation of the LMA scenario is provided by the absence of a day-night asymmetry in the 7Be signal. These experimental results allow to improve the upper limit on the neutrino effective magnetic moment. Calibration campaigns aiming to reduce the systematical errors on fiducial volume definition and detector energy response are presently in progress.

Item Type: Article
Uncontrolled Keywords: Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors ; Scintillation detectors
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 27 Mar 2020 09:53
Last Modified: 27 Mar 2020 09:53

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