NOvA results
Contents
Analysis 2019
The best-fit parameters of neutrino oscillation for each choice of octant and hierarchy.
The best-fit point is found for the normal hierarchy
in the upper octant. In this case:
Other results is showen by table:
NO, LO | IH, UO | IH, LO | |
---|---|---|---|
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Analysis 2017
Second Analysis (2016)
The results of the second analysis were published in 2017. This analysis used an exposure equivalent to from the Fermilab NuMI beam.
Muon neutino disappearance results
The best fit in the normal hierarchy gives:
The best fit in the inverted hierarchy gives:
Maximal mixing, where , was disfavored at
.
Electron neutrino appearance results
candidates were observed with a background of
.
The hypothesis of inverted mass hierarchy with in the lower octant is disfavored at greater than 93% C.L. for all values of
.
Sterile neutrinos?
First Analysis (2015)
The results of the first analysis were published in 2016. This analysis used a 14 kton-equivalent exposure of from the Fermilab NuMI beam.
Muon-neutrino disappearance results
Assuming the normal hierarchy, the measurements have a next view:
and in the 68% CL range
, with two statistically degenerate best-fit values:
Assuming the inverted hierarchy, the measurements have a next view:
and in the 68% CL range
, with two statistically degenerate best-fit values:
Electron neutrino appearance results
NOvA had observed -like events in the FD, with a background prediction of
The range of in the IH is disfavored at the 90% C.L. The range of
in the NH is disfavored at the 90% C.L.