论文标题
使用冷中子对轴突状暗物质的新限制
New Limit on Axion-Like Dark Matter using Cold Neutrons
论文作者
论文摘要
我们报告使用Ramsey型设备以搜索暗物质轴状颗粒（ALP）。假设的ALP-Gluon耦合将在随时间振荡的中子电偶极矩信号中表现出来。已经在频率范围内分析了24个小时的数据，从23美元$ $ Hz到1 kHz，尚未发现明显的振荡信号。当前的深色模型的用法允许将阿尔卑斯山的耦合限制在质量范围内的胶状范围从$ 10^{ - 19} $到$ 4 \ times 10^{ - 12} $ ev。 $ c_g $/$ f_a m_a的最佳限制在质量范围内达到$ 2 \ times 10^{ - 17} $到$ 2 \ $ 2 \ times 10^{ - 14} $ ev。
We report on a search for dark matter axion-like particles (ALPs) using a Ramsey-type apparatus for cold neutrons. A hypothetical ALP-gluon-coupling would manifest in a neutron electric dipole moment signal oscillating in time. Twenty-four hours of data have been analyzed in a frequency range from 23 $μ$Hz to 1 kHz, and no significant oscillating signal has been found. The usage of present dark-matter models allows to constrain the coupling of ALPs to gluons in the mass range from $10^{-19}$ to $4 \times 10^{-12}$ eV. The best limit of $C_G$/$f_a m_a = 2.7 \times 10^{13}$ GeV$^{-2}$ (95% C.L.) is reached in the mass range from $2 \times 10^{-17}$ to $2 \times 10^{-14}$ eV.
