We constrain and update the bounds on the life-time of a decaying dark matter model with a warm massive daughter particle using the most recent low-redshift probes. We use Supernovae Type-Ia, Baryon Acoustic Oscillations and the time delay measurements of gravitationally lensed quasars. These data sets are complemented by the early universe priors taken from the Cosmic Microwave background. For the maximum allowed fraction of the relativistic daughter particle, the updated bounds on the life-time are found to be $\tau > 9\, \rm{Gyr}$ and $\tau >11\,\rm{Gyr}$ at $95\%$ C.L., for the two-body and many-body decay scenarios, respectively. We also comment on the recent proposal that the current two-body decaying dark matter model can provide resolution for the $H_0$-tension, by contrasting against the standard $\Lambda$CDM model. We infer that the current dark matter decaying scenario is unlikely to alleviate the $H_0$-tension. We find that the decaying dark matter is able to reduce the trend of the decreasing $H_0$ values with increasing lens redshifts observed in the strong lensing dataset.

中文翻译：

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晚期衰变暗物质：对 H0 张力的约束和影响

我们使用最新的低红移探测器约束和更新具有温暖大质量子粒子的衰变暗物质模型的寿命界限。我们使用超新星 Ia 型、重子声波振荡和引力透镜类星体的时间延迟测量。这些数据集得到了从宇宙微波背景中获取的早期宇宙先验信息的补充。对于相对论子粒子的最大允许分数，发现寿命的更新边界为 $\tau > 9\, \rm{Gyr}$ 和 $\tau >11\,\rm{Gyr}$在 $95\%$ CL，分别用于二体和多体衰变场景。我们还评论了最近的提议，即与标准的 $\Lambda$CDM 模型相比，当前的双体衰变暗物质模型可以为 $H_0$-张力提供分辨率。我们推断当前的暗物质衰变情景不太可能缓解 $H_0$-紧张局势。我们发现，随着强透镜数据集中观察到的透镜红移增加，衰减的暗物质能够降低 $H_0$ 值下降的趋势。