论文标题
轻度重力暗物质：LHC搜索和哈勃张力
Light gravitino dark matter: LHC searches and Hubble tension
论文作者
论文摘要
宇宙参数$ H_0 $从直接本地观测值和宇宙微波背景的推断值显示的最新测量值显示$ \ sim4σ$差异。这可能表明超出标准$λ$ CDM的新物理。我们研究了在各种宇宙学约束下的非热成分（例如NLSP bino的晚期衰减）的一小部分的KEV Gravitino暗物质。我们发现这种情况具有很高的预测性，可以通过在LHC上搜索Dilepton和缺少的能量事件来测试。此外，我们还讨论了它对哈勃张力的含义，但是，可以将其减少到$3σ$少量。
The recent measurements of the cosmological parameter $H_0$ from the direct local observations and the inferred value from the Cosmic Microwave Background show $\sim 4 σ$ discrepancy. This may indicate new physics beyond the standard $Λ$CDM. We investigate the keV gravitino dark matter that has a small fraction of non-thermal component (e.g. from the late decay of NLSP bino) under various cosmological constraints. We find such a scenario is highly predictive and can be tested by searching for the dilepton plus missing energy events at the LHC. Besides, we also discuss its implication for Hubble tension, however, which can be reduced to $3σ$ level marginally.
