论文标题
通过Migdal效应搜索带有Edelweiss锗探测器的Sub-Gev暗物质，并带有NBSI TES传感器
Search for sub-GeV Dark Matter via Migdal effect with an EDELWEISS germanium detector with NbSi TES sensors
论文作者
论文摘要
The EDELWEISS collaboration reports on the search for Dark Matter (DM) particle interactions via Migdal effect with masses between $32$ MeV$\cdot$c$^{-2}$ to $2$ GeV$\cdot$c$^{-2}$ using a $200$ g cryogenic Ge detector sensitive to simultaneously heat and ionization signals and operated underground at the Laboratoire Souterrain de法国的木板。使用由NBSI薄膜制成的过渡边缘传感器读取声子信号。该探测器的偏见为$ 66 $ V，以便从Neganov-Trofimov-Luke放大中受益，并导致对电子后坐力的能量$ 4.46 $ ev $ _ {EE} $（RMS）和分析阈值$ 30 $ ev $ _ {EE} $。灵敏度受到检测器中的电荷创造而无关的主要背景的限制。搜索将横截面的参数空间的新区域限制为$ 10^{ - 29} $ cm $^2 $，质量在$ 32 $和$ 100 $ MEV $ \ cdot $ c $ c $ c $ c $^{ - 2} $之间。使用NBSI传感器实现的低阈值显示了其用于低质量DM搜索的Athermal-Phonon敏感设备的相关性。
The EDELWEISS collaboration reports on the search for Dark Matter (DM) particle interactions via Migdal effect with masses between $32$ MeV$\cdot$c$^{-2}$ to $2$ GeV$\cdot$c$^{-2}$ using a $200$ g cryogenic Ge detector sensitive to simultaneously heat and ionization signals and operated underground at the Laboratoire Souterrain de Modane in France. The phonon signal was read out using a Transition Edge Sensor made of a NbSi thin film. The detector was biased at $66$ V in order to benefit from the Neganov-Trofimov-Luke amplification and resulting in a resolution on the energy of electron recoils of $4.46$ eV$_{ee}$ (RMS) and an analysis threshold of $30$ eV$_{ee}$. The sensitivity is limited by a dominant background not associated to charge creation in the detector. The search constrains a new region of parameter space for cross-sections down to $10^{-29}$ cm$^2$ and masses between $32$ and $100$ MeV$\cdot$c$^{-2}$. The achieved low threshold with the NbSi sensor shows the relevance of its use for athermal-phonon sensitive devices for low-mass DM searches.
