Wuppertal 2015 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 81: Eingeladene Vorträge 3
T 81.3: Eingeladener Vortrag
Donnerstag, 12. März 2015, 14:45–15:15, M.10.12 (HS 14)
Search for sterile neutrinos with SOX-Borexino — •Matteo Agostini for the Borexino collaboration — Physik Department and Excellence Cluster Universe, Technische Universität München, Germany
The aim of the SOX-Borexino project is to unambiguously discover or refute eV-scale sterile neutrinos. Hints for eV-scale sterile neutrinos are provided by experiments with neutrinos from accelerators (LSND and MiniBoone), radioactive sources (Gallex and SAGE), and reactors (reactor-anomaly). An electron anti-neutrino source (144Ce) will be placed next to the Borexino detector (LNGS, Italy) to search for short-baseline oscillations of active-to-sterile neutrinos. With an initial source activity of 100 kCi and after 1.5 yr of data taking, Borexino will detect more than 104 anti-neutrinos interacting via inverse beta-decay with negligible background contributions. The sought-after signature of sterile neutrinos is an oscillatory pattern in the neutrino interaction rate as a function of the neutrino energy and distance from the source. The delivery of the anti-neutrino source is scheduled for the end of 2015 and first results are expected already in 2016. This work is partially supported by the DFG cluster of excellence “Origin and Structure of the Universe”.