Super Heavy Dark Matter in light of BICEP2, Planck and Ultra High Energy Cosmic Rays Observations
Super Heavy Dark Matter in light of BICEP2, Planck and Ultra High Energy Cosmic Rays Observations
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BICEP2、普朗克和超高能宇宙射线观测中的超重暗物质
DOI：
10.1088/1475-7516/2015/08/024
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发表时间：
2015
影响因子：
6.4
通讯作者：
A. Olinto
中科院分区：
文献类型：
--
作者：
R. Aloisio;S. Matarrese;A. Olinto
BICEP2探测到的b模偏振与原始引力波的张量-标量比r=0.2+0.07−0.05相一致，挑战了大多数r值较低的暴胀模型的预测。普朗克最近关于极化尘埃发射的结果表明，观测到的张量模式信号与纯粹的前景发射相容。然后通过对普朗克、BICEP2和Keck阵列数据的联合分析，得到了对r的更显著约束，显示张量与标量比r≤0.12的上限，排除了0r=具有低统计显著性的情况。即将进行的BICEP3、凯克阵列和其他CMB偏振实验的测量，为进行r的基本测量提供了可能性。在这里，我们讨论r如何为暗物质在暴胀时期产生的模型设定尺度，即通常所说的超重暗物质模型。我们还考虑了超高能宇宙射线天文台的最新数据对这种情况的限制，这些数据设定了超重暗物质粒子的寿命限制。我们讨论了如何通过精确测量r结合未来对超高能量宇宙射线的观测来发现超重暗物质。
The announcement by BICEP2 of the detection of B-mode polarization consistent with primordial gravitational waves with a tensor-to-scalar ratio, r=0.2+0.07−0.05, challenged predictions from most inflationary models of a lower value for r. More recent results by Planck on polarized dust emission show that the observed tensor modes signal is compatible with pure foreground emission. A more significant constraint on r was then obtained by a joint analysis of Planck, BICEP2 and Keck Array data showing an upper limit to the tensor to scalar ratio r≤ 0.12, excluding the case 0r= with low statistical significance. Forthcoming measurements by BICEP3, the Keck Array, and other CMB polarization experiments, open the possibility for making the fundamental measurement of r. Here we discuss how r sets the scale for models where the dark matter is created at the inflationary epoch, the generically called super-heavy dark matter models. We also consider the constraints on such scenarios given by recent data from ultrahigh energy cosmic ray observatories which set the limit on super-heavy dark matter particles lifetime. We discuss how super-heavy dark matter can be discovered by a precise measurement of r combined with future observations of ultra high energy cosmic rays.
对阿斯卡扬射电阵列原型站的超高能中微子通量的首次限制
影响因子：
3.5
作者：
Allison P
通讯作者：
Allison P
影响因子：
8.6
作者：
Ade, P. A. R.;Aikin, R. W.;Yoon, K. W.
通讯作者：
Yoon, K. W.