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Ilenia SALVADORI : Study of atmospheric neutrino oscillations with the ANTARES neutrino telescope
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Europe/Paris
Amphi (CPPM)
Amphi
CPPM
Description
Abstract:
Neutrinos are probably the most peculiar particles known. From the first assumption about their existence, back in 1930, till today, they have challenged scientists in building innovative experimental techniques as well as in developing theoretical models in order to explain and study their properties.
The ANTARES neutrino telescope has been optimized to study high energy
neutrinos coming from galactic and extra-galactic astrophysical objects. On the other hand, at neutrino energies of the order of a few tens of GeV, the detector configuration and the reconstruction algorithms allow to study the phenomenon of atmospheric muon neutrino disappearance due to neutrino oscillations, by looking at distortions in the energy and angular distributions of detected events. In a similar way, constraints on the 3+1 neutrino model, which foresees the existence of a sterile neutrino, can be inferred. Using data collected by the ANTARES neutrino telescope from 2007 to 2016, a new measurement of ∆m^2_32 and θ_23 has been performed, and
constraints on the 3+1 model have been derived.
Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection efficiency of optical modules has been studied as well.
The ANTARES neutrino telescope has been optimized to study high energy
neutrinos coming from galactic and extra-galactic astrophysical objects. On the other hand, at neutrino energies of the order of a few tens of GeV, the detector configuration and the reconstruction algorithms allow to study the phenomenon of atmospheric muon neutrino disappearance due to neutrino oscillations, by looking at distortions in the energy and angular distributions of detected events. In a similar way, constraints on the 3+1 neutrino model, which foresees the existence of a sterile neutrino, can be inferred. Using data collected by the ANTARES neutrino telescope from 2007 to 2016, a new measurement of ∆m^2_32 and θ_23 has been performed, and
constraints on the 3+1 model have been derived.
Cherenkov light induced by radioactive decay products is one of the major sources of background light for deep-sea neutrino telescopes such as ANTARES. These decays are at the same time a powerful calibration source. Using data collected by the ANTARES neutrino telescope from mid 2008 to 2017, the time evolution of the photon detection efficiency of optical modules has been studied as well.
Members of committee:
Caren HAGNER Hamburg University Rapporteur
Sergio NAVAS-CONCHA University of Granada Rapporteur
Cristinel DIACONU CPPM Examinateur
Thierry LASSERRE CEA/IRFU Saclay Examinateur
Veronique VAN-ELEWCYCK Paris Diderot University Examinateur
José BUSTO CPPM Examinateur
Jürgen BRUNNER CPPM Directeur de thèse
Sergio NAVAS-CONCHA University of Granada Rapporteur
Cristinel DIACONU CPPM Examinateur
Thierry LASSERRE CEA/IRFU Saclay Examinateur
Veronique VAN-ELEWCYCK Paris Diderot University Examinateur
José BUSTO CPPM Examinateur
Jürgen BRUNNER CPPM Directeur de thèse
