arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.2872hep-ph
收藏

从X射线线位移顶点

Displaced Vertices from X-ray Lines

Adam Falkowski, Yonit Hochberg, Joshua T. Ruderman

摘要:

我们提出了一个简单的模型,弱尺度热暗物质,产生X射线线。暗物质由两个接近弱尺度的近简并态组成,它们在早期宇宙中通过与标准模型下带电的稍重的态共湮灭而被热填充。X射线线是由较重的暗物质通过辐射偶极跃迁衰变为较轻的物质而产生的,衰变的速度与宇宙的年龄相比是很慢的。该模型预测了在大型强子对撞机上可观测到的信号,其形式是具有丢失能量和位移轻子和喷流的奇异事件。作为一个应用程序,我们展示了这个模型可以解释最近观察到的3.55 keV X射线线。

英文摘要:

We present a simple model of weak-scale thermal dark matter that gives rise to X-ray lines. Dark matter consists of two nearly degenerate states near the weak scale, which are populated thermally in the early universe via co-annihilation with slightly heavier states that are charged under the Standard Model. The X-ray line arises from the decay of the heavier dark matter component into the lighter one via a radiative dipole transition, at a rate that is slow compared to the age of the universe. The model predicts observable signatures at the LHC in the form of exotic events with missing energy and displaced leptons and jets. As an application, we show how this model can explain the recently observed 3.55 keV X-ray line.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑