Today's new neutrino result from Borexino puts the $\Delta_{12}$ mass square difference known figure of $8 \times 10^{-5}$ $\textrm{eV}^{2}$ in the $90 %$ confidence region, shown here.

The paper contains another graph with even tighter bounds, and a best fit of around $5 \times 10^{-5}$ $\textrm{eV}^{2}$. Congratulations to the group.

8 years ago

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