Edelweiss实验对Sub-Mev暗物质的第一个基于锗的约束

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Edelweiss实验对Sub-Mev暗物质的第一个基于锗的约束

First germanium-based constraints on sub-MeV Dark Matter with the EDELWEISS experiment

论文作者

EDELWEISS Collaboration, Arnaud, Q., Armengaud, E., Augier, C., Benoît, A., Bergé, L., Billard, J., Broniatowski, A., Camus, P., Cazes, A., Chapellier, M., Charlieux, F., De Jésus, M., Dumoulin, L., Eitel, K., Elkhoury, E., Fillipini, J. -B., Filosofov, D., Gascon, J., Giuliani, A., Gros, M., Jin, Y., Juillard, A., Kleifges, M., Lattaud, H., Marnieros, S., Misiak, D., Navick, X. -F., Nones, C., Olivieri, E., Oriol, C., Pari, P., Paul, B., Poda, D., Rozov, S., Salagnac, T., Sanglard, V., Siebenborn, B., Vagneron, L., Weber, M., Yakushev, E., Zolotarova, A.

论文摘要

Edelweiss的合作已使用33.4 g GE的低温检测器在LSM的地下进行了与电子相互作用的暗物质（DM）颗粒。使用Neganov-trofimov-Luke放大，已经实现了0.53个电子孔对（RMS）的电荷分辨率。我们设置了与sub-mev/c $^{2} $ dm颗粒相互作用的第一个基于GE的约束，与电子相互作用，并在深色光照射到1 ev/c $ c $^2 $^2 $^2 $上。这些与其他搜索具有竞争力。特别是，在6至9 ev/c $^2 $质量范围内，深色光子DM的动力学混合设置了新限制。这些结果证明了低温GE检测器对于搜索产生EV级电子信号的DM相互作用的高相关性。

The EDELWEISS collaboration has performed a search for Dark Matter (DM) particles interacting with electrons using a 33.4 g Ge cryogenic detector operated underground at the LSM. A charge resolution of 0.53 electron-hole pairs (RMS) has been achieved using the Neganov-Trofimov-Luke amplification with a bias of 78 V. We set the first Ge-based constraints on sub-MeV/c$^{2}$ DM particles interacting with electrons, as well as on dark photons down to 1 eV/c$^2$. These are competitive with other searches. In particular, new limits are set on the kinetic mixing of dark photon DM in a so far unconstrained parameter space region in the 6 to 9 eV/c$^2$ mass range. These results demonstrate the high relevance of cryogenic Ge detectors for the search of DM interactions producing eV-scale electron signals.

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