The analysis of the results of the Neutrino-4 experiment on search for sterile neutrino and comparison with results of other experiments

We present new results of measurements of reactor antineutrino flux and spectrum dependence on the distance in the range 6-12 meters from the center of the reactor core. Additional measurements were carried out and set of data to perform statistical analysis was almost doubled since the previous report. Using all collected data we performed the model independent analysis on the oscillation parameters $\Delta m^2_{14}$ and $\sin^2(2\theta_{14})$. The method of coherent summation of results of measurements allows us to directly observe the effect of oscillations. We observed an oscillation effect at CL 3.0{\sigma} in vicinity of $\Delta m^2_{14} \approx 7.25 \text{eV}^2$ and $\sin^2(2\theta_{14}) \approx 0.26 \pm 0.08(3.0)\sigma$. We provide a comparison of our results with results of other experiments on search for sterile neutrino. Combining the result of the Neutrino-4 experiment and the results of measurements of the gallium anomaly and reactor anomaly we obtained value $\sin^2(2\theta_{14}) \approx 0.19 \pm 0.04 (4.6\sigma)$. Also was performed comparison of Neutrino-4 experimental results with results of other reactor experiments NEOS, DANSS, STEREO, PROSPECT and accelerator experiments MiniBooNE, LSND. It is important to point out that obtained values $\sin^2(2\theta_{14}) \approx 0.19 \pm 0.04 (4.6\sigma)$ and $\Delta m^2_{14} = (7.25\pm 0.13)\text{eV}^2$ allow making estimation of the mass of electron neutrino at level: $m_{\beta} \approx 0.6 \text{eV}$.