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Mirror & hidden sector dark matter in the light of new CoGeNT data

机译:根据新的CoGeNT数据,镜像和隐藏扇区暗物质

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The CoGeNT Collaboration has recently made available new data collected over a period of 15 months. In addition to more accurately measuring the spectrum of nuclear recoil candidate events they have announced evidence for an annual modulation signal. We examine the implications of these new results within the context of mirror/hidden sector dark matter models. We find that the new CoGeNT data can be explained within this framework with parameter space consistent with the DAMA annual modulation signal, and the null results of the other experiments. We also point out that the CoGeNT spectrum at low energies is observed to obeydR/dER∝1/ER2which suggests that dark matter interacts via Rutherford scattering rather than the more commonly assumed contact (four-fermion) interaction.
机译:CoGeNT协作最近提供了在15个月内收集的新数据。除了更准确地测量核后坐力候选事件的频谱外,他们还宣布了年度调制信号的证据。我们在镜像/隐藏扇区暗物质模型的背景下研究了这些新结果的含义。我们发现新的CoGeNT数据可以在此框架内用与DAMA年度调制信号一致的参数空间进行解释,而其他实验的结果为空。我们还指出,观察到低能量的CoGeNT光谱服从R / dER∝1 / ER2,这表明暗物质是通过卢瑟福散射而不是更普遍假定的接触(四费米子)相互作用来相互作用的。

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