在本文中,我们在最新的大尺度结构测量中搜索由Escher-Abad等人(2015)提出的暗物质-暗辐射相互作用的特征。我们发现,先前的索赔检测这种相互作用依赖于使用的SZ集群质量函数,忽略了质量可观测关系的不确定性。包括这种不确定性,我们发现推断的相互作用水平与数据保持一致,但零相互作用也是如此;即,不再有检测。我们还指出,从Ly $α$森林测量的物质功率谱的形状和幅度的推断是高度不一致的预测的$Λ$ CDM模型的普朗克CMB温度,偏振和透镜功率谱的条件下,和暗物质-暗辐射模型可以恢复的一致性。我们还从现象学的角度概括了Escher-Abad et al.(2015)的模型,以允许相互作用速率与温度的不同比例,并发现原始比例是数据的首选。
英文摘要:
In this paper, we conduct a search in the latest large-scale structure measurements for signatures of the dark matter-dark radiation interaction proposed by Buen-Abad et al. (2015). We show that prior claims of a detection of this interaction rely on a use of the SZ cluster mass function that ignores uncertainty in the mass-observable relationship. Including this uncertainty we find that the inferred level of interaction remains consistent with the data, but so does zero interaction; i.e., there is no longer a detection. We also point out that inference of the shape and amplitude of the matter power spectrum from Ly$α$ forest measurements is highly inconsistent with the predictions of the $Λ$CDM model conditioned on Planck CMB temperature, polarization, and lensing power spectra, and that the dark matter-dark radiation model can restore that consistency. We also phenomenologically generalize the model of Buen-Abad et al. (2015) to allow for interaction rates with different scalings with temperature, and find that the original scaling is preferred by the data.
Searching for BSM Experimental Signatures with Large Lagrangian Models
University of Toronto(多伦多大学);Vector Institute(向量研究所);Lawrence Berkeley National Laboratory(劳伦斯伯克利国家实验室);University of California, Irvine(加州大学欧文分校);Halluminate;Georgia Institute of Technology(佐治亚理工学院)
Searching for Dark Photon Tridents Through Primordial Black Hole Signatures
National Tsing Hua University(国立清华大学);Konkuk University(建国大学);Seoul National University of Science and Technology(首尔科学技术大学);National Center for Theoretical Sciences(国家理论科学中心)
Searching for signatures of self-interacting dark matter in halos from full physics simulations: From 3D structure to projected observables
Università di Milano Bicocca(米兰比可卡大学);INAF-Osservatorio Astronomico di Trieste(意大利国家天体物理研究所的里雅斯特天文台);Donostia International Physics Center (DIPC)(圣塞巴斯蒂安国际物理中心)