论文标题
对无菌中微子模型的限制,来自强力重力镜头,银河系卫星和Lyman- $α$ sorest的限制
Constraints on sterile neutrino models from strong gravitational lensing, Milky Way satellites, and Lyman-$α$ forest
论文作者
论文摘要
暗物质的本质是科学中最重要的未解决问题之一。某些暗物质候选者没有足够的非倾向相互作用,可以在实验室或加速器实验中进行探测。因此,重要的是开发可以限制或导致发现此类候选者的天体物理探针。我们使用对强力透明的类星体的最新测量来说明这一点,以限制四种最受欢迎的无菌中微子模型,并报告对程序中其他独立方法的约束。首先,我们得出有效的关系来描述热遗物温暖的暗物质颗粒的质量与通过大规模结构和星系形成天文学效应而通过希格斯衰减和肠道场景产生的无菌中微子的质量。其次,我们表明,通过Higgs衰减机制产生的无菌中微子仅适用于质量> 26美元的kev,而肠道场景$> 5.3 $ kev。第三,我们表明,通过主动中微子振荡产生的单个无菌中微子模型对于质量> 92 $ keV允许使用,而3个无菌中微子最小标准型号($ν$ msm),质量$> 16 $ kev。这些是这些模型上最严格的实验限制。
The nature of dark matter is one of the most important unsolved questions in science. Some dark matter candidates do not have sufficient nongravitational interactions to be probed in laboratory or accelerator experiments. It is thus important to develop astrophysical probes which can constrain or lead to a discovery of such candidates. We illustrate this using state-of-the-art measurements of strong gravitationally-lensed quasars to constrain four of the most popular sterile neutrino models, and also report the constraints for other independent methods that are comparable in procedure. First, we derive effective relations to describe the correspondence between the mass of a thermal relic warm dark matter particle and the mass of sterile neutrinos produced via Higgs decay and GUT-scale scenarios, in terms of large-scale structure and galaxy formation astrophysical effects. Second, we show that sterile neutrinos produced through the Higgs decay mechanism are allowed only for mass $>26$ keV, and GUT-scale scenario $>5.3$ keV. Third, we show that the single sterile neutrino model produced through active neutrino oscillations is allowed for mass $>92$ keV, and the 3 sterile neutrino minimal standard model ($ν$MSM) for mass $>16$ keV. These are the most stringent experimental limits on these models.