TY  - THES
AU  - Meyer, Mikko
TI  - SOX - Towards the Detection of Sterile Neutrinos in Borexino :  Beta Spectrum Modeling, Monte Carlo Development and Sensitivity Studies for the Sterile Neutrino Search in Borexino
IS  - DESY-THESIS-2016-032
SN  - 1435-8085
PB  - Universität Hamburg
VL  - Dr.
CY  - Hamburg
M1  - PUBDB-2016-06001
M1  - DESY-THESIS-2016-032
T2  - DESY-THESIS
SP  - 178
PY  - 2016
N1  - POF ist korrekt, wurde von -L- überprüft, pdf-A lässt sich nicht erstellen 7.12.16
N1  - Universität Hamburg, Diss., 2016
AB  - Several experiments have reported anomalies in the neutrino sector which might be explained by the existence of a fourth (sterile) neutrino with a squared mass difference of about 1 eV 2 to the other three active neutrinos. The SOX project is part of the experimental program of the Borexino experiment and seeks for a clarification of the observed anomalies. For that purpose an artificial antineutrino source ( 144 Ce− 144 Pr) and possibly neutrino source ( 51 Cr) will be deployed underneath the large low background detector Borexino. The detector pro- vides both energy and vertex resolution to observe a possible oscillation signature within the detector volume. The calculation of the antineutrino spectrum is based on existing theoreti- cal models and was performed within this thesis. The modeling includes several sub-leading corrections particularly such as finite size of the nucleus, screening of the atomic electrons and radiative effects. Related to this work, dedicated Monte Carlo generators have been de- veloped to simulate the inverse beta decay reaction and the (anti)neutrino elastic scattering off electrons. Based on a profile likelihood analysis, the sensitivity to the sterile neutrino search of the SOX project was evaluated. The results obtained from this analysis confirm that the currently allowed parameter regions for sterile neutrinos can be tested at 95
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)11
DO  - DOI:10.3204/DESY-THESIS-2016-032
UR  - https://bib-pubdb1.desy.de/record/315655
ER  -