Speaker
Description
New DANSS results on searches for sterile neutrinos based on 8.5M $\nu$ events exclude an important part of the $\nu_s$ parameter space. Obtained limits exclude practically all sterile neutrino parameters preferred by BEST results for $Δm^2$ < 5 $eV^2$. Analysis relying on absolute $\nu$ flux predictions excludes practically all $\nu_s$ parameters preferred by the BEST results. The neutrino spectrum dependence on the $^{239}Pu$ fission fraction agrees with predictions of the Huber-Mueller model. The ratio of cross sections for $^{235}U$ and $^{239}Pu$ also agrees with the Huber-Mueller model and somewhat larger than in other experiments. The reactor power was measured using the $\nu$ event rate during 7.5 years with a statistical accuracy of 1.5$\%$ in 2 days and with the relative systematic uncertainty of less than 0.5$\%$. The fraction of the antineutrino yield with energies above 8 MeV is measured. A new method of calibration using the Bragg curve for stopping muons is presented.
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