Sterile Neutrinos search via NC dis at NOvA
December 03, 2019
December 12, 2019
Observations of neutrino oscillations from the majority of neutrino oscillation experiments are consistent with a three-flavor framework. However, the excess of events seen by LSND and MiniBooNE are incompatible with this model and can be explained by an additional, sterile, neutrino. These intriguing results are not conclusive and are in tension with findings from other short-baseline and long-baseline experiments.
The NOvA experiment, which uses a long baseline of 809 km between its functionally identical liquid scintillator near and far detectors at Fermilab and Minnesota respectively, has the potential to set world-leading limits on the parameters governing sterile neutrino oscillations by searching for a deficit of neutral-current interactions compared to that predicted at the two detectors. An updated analysis with the NOvA neutrino dataset will be presented along with the first results from a long-baseline sterile search in an antineutrino beam. Limits on the sterile neutrino mixing parameters will be shown and plans for future analyses, including a two-detector joint fit utilizing a covariance matrix to constrain systematics, will be discussed.
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