Neutrino physics with the Borexino experiment

Caccianiga, B. (2012) Neutrino physics with the Borexino experiment. Il nuovo cimento C, 35 (1). pp. 133-140. ISSN 1826-9885

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Borexino is a large mass, high radiopurity detector located under the Gran Sasso Mountain (Italy) and designed to measure in real-time the flux of low energy solar neutrinos. Borexino has been taking data continuously since May 2007. This talk is focused on the main goal of Borexino, the measurement of solar neutrinos produced in the 7Be reaction: I will present the result on the 7Be flux obtained in 2008 after 192 days of data-taking together with a preliminary evaluation of the daynight asymmetry of the signal. I will also discuss the impact on the analysis of the two extensive calibration campaigns performed in 2009. Thanks to these campaigns a new measurement of the 7Be flux will be shortly published with significantly reduced error. Borexino is also able of measuring the 8B neutrino flux with an unprecedented low threshold of 3MeV (scattered electron kinetic energy): it is the only experiment able of probing the survival probability in the vacuum dominated oscillation regime (with 7Be neutrinos) and in the matter enhanced oscillation regime (with 8B). Finally, I will also present another important result of Borexino, namely the first clear observation of geoneutrinos.

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: 14 Apr 2020 16:49
Last Modified: 14 Apr 2020 16:49

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