We present new results of the DANSS experiment on the searches for sterile neutrinos. They are based on more than 2 million of inverse beta decay events collected at 10.7 m, 11.7 m and 12.7 m from the reactor core of the 3.1 GW Kalinin Nuclear Power Plant in Russia. This data sample is 2.4 times larger than the data sample in the previous DANSS publication. The search for the sterile neutrinos is performed using the ratio of [Formula: see text] spectra at two distances. This method is very robust against systematic uncertainties in the [Formula: see text] spectrum and the detector efficiency. We do not see any statistically significant sign for the [Formula: see text] oscillations. This allows us to exclude further a large and interesting part of the sterile neutrino parameter space. A Gaussian CL[Formula: see text] method was used to obtain exclusion areas. This method is more conservative than a Raster Scan method.

中文翻译：

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DANSS 实验的新结果

我们展示了寻找无菌中微子的 DANSS 实验的新结果。它们基于在俄罗斯 3.1 GW 加里宁核电站反应堆堆芯 10.7 m、11.7 m 和 12.7 m 处收集的超过 200 万个反 β 衰变事件。该数据样本比之前 DANSS 出版物中的数据样本大 2.4 倍。使用两个距离处的 [公式：见文本] 光谱的比率来搜索无菌中微子。这种方法对[公式：见文本]光谱和检测器效率中的系统不确定性非常稳健。我们没有看到 [公式：见文本] 振荡的任何统计上显着的迹象。这使我们能够进一步排除不育中微子参数空间的一个大而有趣的部分。高斯 CL[公式：见正文]方法用于获得排除区域。这种方法比光栅扫描方法更保守。