论文标题
首次搜索带有gerda的质量高达1 mev/c $^2 $的玻色粒超弹跳
The first search for bosonic super-WIMPs with masses up to 1 MeV/c$^2$ with GERDA
论文作者
论文摘要
我们首次介绍了玻色粒超弹跳,作为通过GERDA实验进行的KEV规模的暗物质候选者。 GERDA是一个中性s的双β衰减实验,在意大利的INFN的Laboratori nazionali del Gran Sasso(LNGS)的超低背景环境中运营着富含$^{76} $ ge的高纯晶型探测器。搜索了群体区域中的伪ca和矢量粒子,从60 kev/c $^2 $到1 mev/c $^2 $。没有观察到暗物质信号的证据,并且已经设置了超过120 keV/c $^2 $的超级振动对耦合的最严格约束。例如,以150 keV/c $^2 $的质量,最严格的直接限制是轴心般的颗粒和深色光子与$ g_ {ae} <3 \ cdot 10^{-12} $ cdot 10^{-12} $和$ {α'}/α'}/α<6.5 <6.5 \ cdot 10^$ at 90 egn egn in 90 conde cy at in 90^egn egn extection in 90^egraly的偶然的耦合。
We present the first search for bosonic super-WIMPs as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-beta decay experiment which operates high-purity germanium detectors enriched in $^{76}$Ge in an ultra-low background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c$^2$ to 1 MeV/c$^2$. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c$^2$ have been set. As an example, at a mass of 150 keV/c$^2$ the most stringent direct limits on the dimensionless couplings of axion-like particles and dark photons to electrons of $g_{ae} < 3 \cdot 10^{-12}$ and ${α'}/α < 6.5 \cdot 10^{-24}$ at 90% credible interval, respectively, were obtained.