论文标题
直接的暗物质搜索使用XMASS-I的完整数据集进行
Direct dark matter searches with the full data set of XMASS-I
论文作者
论文摘要
本文报道了使用Xmass-I（单相液体氙气检测器）的完整数据集进行各种WIMP暗物质搜索。稳定的XMASS-I数据在2013年11月20日至2019年2月1日之间累积了1590.9天的总直播时间，分析门槛为$ {\ rm 1.0 \，kev_ {ee}} $。在后半部分中，数据采用$ {\ rm 0.5 \的较低分析阈值，kev_ {ee}}} $也可以通过新的低阈值触发器获得。在检测器的97〜 kg基准量中搜索wimb信号，对$ {\ rm 1.4 \ rm 1.4 \ times 10^{ - 44} \，cm^{2}} $的Wimp-nucleon散射横截面的限制限制了$ {\ rm 60 \，gev，gev，gev，gev，gev/c^priforts $ coptripter/cm^{2}} $。我们还搜索了探测器的整个目标体积中的WIMP诱导的年度调制特征，其中包含832〜kg液体氙气。对于$ {\ rm 8 \，gev/c^{2}} $ wimp的核后坐力，此分析产生了90 \％Cl横截面限制$ {\ rm 2.3 \ times 10^{ - 42}} { - 42} \，cm^{2}}} $。评估了$ {\ rm 0.5 \，gev/c^{2}} $ migdal效果和bremsstrahlung签名，并导致90 \％cl横截面限制$ {\ rm 1.4 \ rm 1.4 \ rm 1.4 \ rm 1.4 \ rm times 10^{ - 35} { - 35} { - 35} \，cm^{2}} 10^{ - 33} \，cm^{2}} $。
Various WIMP dark matter searches using the full data set of XMASS-I, a single-phase liquid xenon detector, are reported in this paper. Stable XMASS-I data taking accumulated a total live time of 1590.9 days between November 20, 2013 and February 1, 2019 with an analysis threshold of ${\rm 1.0\,keV_{ee}}$. In the latter half of data taking a lower analysis threshold of ${\rm 0.5\,keV_{ee}}$ was also available through a new low threshold trigger. Searching for a WIMP signal in the detector's 97~kg fiducial volume yielded a limit on the WIMP-nucleon scattering cross section of ${\rm 1.4\times 10^{-44}\, cm^{2}}$ for a ${\rm 60\,GeV/c^{2}}$ WIMP at the 90$\%$ confidence level. We also searched for WIMP induced annual modulation signatures in the detector's whole target volume, containing 832~kg of liquid xenon. For nuclear recoils of a ${\rm 8\,GeV/c^{2}}$ WIMP this analysis yielded a 90\% CL cross section limit of ${\rm 2.3\times 10^{-42}\, cm^{2}}$. At a WIMP mass of ${\rm 0.5\, GeV/c^{2}}$ the Migdal effect and Bremsstrahlung signatures were evaluated and lead to 90\% CL cross section limits of ${\rm 1.4\times 10^{-35}\, cm^{2}}$ and ${\rm 1.1\times 10^{-33}\, cm^{2}}$ respectively.
