论文标题
通过重力波探测无奇迹的暗物质
Probing Miracle-less WIMP Dark Matter via Gravitational Waves Spectral Shapes
论文作者
论文摘要
我们提出了一个新颖的探针，即具有较大质量范围的弱相互作用的大量粒子（WIMP）暗物质（DM）候选物，该质量范围均不足其所需的an灭速率，以满足正确的热遗物丰度，称为\ textit {textit {Miracle-noss-noss-wimp wimp}。如果DM相互作用是由像B-L这样的Abelian仪表玻色子介导的，那么对于非常高的B-L对称性破坏，其歼灭速率通常仍小于WIMP球场，从而导致过度生产。通过晚期的熵稀释，从右手中微子（RHN）之一的延迟熵稀释到存在的热量限制内，用于保持模型无异常并产生轻度中微子肿块，从而在观察到的限制范围内带来了过度生产的遗物。这种晚期熵注射导致由宇宙弦产生的引力波（GW）的特殊光谱形状，这是由于B-L对称性破裂而形成的。我们发现DM质量与GW频谱的转弯频率之间的有趣相关性，而后者则在未来的实验范围内。另外两个RHN在通过瘦素发生在产生宇宙的轻质中微子肿块和重子不对称方面起着重要作用。成功使用奇迹般的wimp生成，将转弯频率限制在不久的将来的GW实验的敏感性极限之内。
We propose a novel probe of weakly interacting massive particle (WIMP) dark matter (DM) candidates of a wide mass range which fall short of the required annihilation rates to satisfy correct thermal relic abundance, dubbed as \textit{Miracle-less WIMP}. If the DM interactions are mediated by an Abelian gauge boson like B-L, its annihilation rates typically remain smaller than the WIMP ballpark for very high scale B-L symmetry breaking, leading to overproduction. The thermally overproduced relic is brought within observed limits via late entropy dilution from one of the three right handed neutrinos (RHN) present for keeping the model anomaly free and generating light neutrino masses. Such late entropy injection leads to peculiar spectral shapes of gravitational waves (GW) generated by cosmic strings, formed as a result of B-L symmetry breaking. We find interesting correlation between DM mass and turning frequency of the GW spectrum with the latter being within reach of future experiments. The two other RHNs play major role in generating light neutrino masses and baryon asymmetry of the universe via leptogenesis. Successful leptogenesis with Miracle-less WIMP together restrict the turning frequencies to lie within the sensitivity limits of near future GW experiments.
