STEREO: Search for sterile neutrinos at the ILL

Understand

Recent studies have shown that there are discrepancies between observations and the theoretical predictions in some neutrino experiments at short distances.

• In the so-called "Reactor Antineutrino Anomaly" and in the "Gallium Anomaly", these differences from the expectations are at the $\sim$3 $\sigma$ level in both cases.
• Oscillations into a light sterile neutrino state ($\Delta m^{2} \sim 1eV^{2}$) could account for the deficits in observed rates.
• The STEREO experiment has been conceived to confirm or reject the sterile neutrino hypothesis.