ausblenden:
Schlagwörter:
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Zusammenfassung:
As a possible solution to currently unresolved anomalies in dark matter direct detection
experiments a Standard Model extension was proposed by Pospelov in 2011,
containing a sterile neutrino with mass of the order eV, which interacts with matter
via a new baryonic gauge boson. Recently, the impact of this model on the shortbaseline
anomaly has been studied by Karagiorgi, Shaevitz and Konrad. Their
results indicate that sterile neutrinos interacting with baryons stronger than weak
force have the possibility to explain the tensions of the anomaly. In this thesis,
we investigate the oscillation phenomenology of this model. We re-derive analytical
approximations for the oscillation probabilities in this framework and revise the
previous result. We perform a numerical x2 analysis with data sets from MINOS,
MiniBooNE and solar experiments. The results show that baryonic sterile neutrinos
can not resolve the tensions obtained in simple sterile neutrino scenarios. Assuming
that the MiniBooNE signal is due to active-sterile mixing in a three active plus one
sterile neutrino framework we conclude that the interesting parameter range for the
baryonic matter potential is disfavoured.
