Vacuum-matter transition of solar neutrino oscillations with the Borexino experiment

Buizza Avanzini, M. (2010) Vacuum-matter transition of solar neutrino oscillations with the Borexino experiment. Il nuovo cimento C, 33 (6). pp. 247-248. ISSN 1826-9885

ncc9813.pdf - Published Version

Download (150kB) | Preview
Official URL:


Thanks to the excellent levels of achieved radiopurity and to the accurate data analysis techniques, Borexino has performed the first real time measurement of the 7Be solar neutrino flux. The efficient software rejection of cosmogenic background also allows to investigate the recoiled electron spectrum induced by 8B solar neutrinos down to 3 MeV, the lowest energy threshold ever reached in real time detection. This is the first observation of solar 8B neutrinos in a liquid scintillator detector. For the first time, the same apparatus can measure the two different oscillation regions (vacuum-driven and matter-enhanced) predicted by the MSW-LMA model. Borexino also quotes the ratio between the survival probabilities, corresponding to 1.93 ± 0.75, validating the presence of the transition region predicted by the MSW-LMA solution.

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: 03 Apr 2020 14:12
Last Modified: 03 Apr 2020 14:12

Actions (login required)

View Item View Item