论文标题
使用红外固定点探索宇宙暗物质的重合
Exploring the cosmological dark matter coincidence using infrared fixed points
论文作者
论文摘要
不对称的暗物质（ADM）范式是由可见和暗物质的宇宙学质量密度之间的明显巧合，$ω__\ Mathrm {dm} \ simeq5Ω_\ Mathrm {vm {vm} $。但是，大多数ADM模型仅关联可见和暗物质的数量密度，并且不会激发其粒子质量的相似性。一个例外是Bai和Schwaller引入的框架，该框架是暗物质是暗QCD样量规组的狭窄状态，并且可见和深色QCD的限制尺度通过使用两个量规耦合的红外固定点的动力学机制相关。我们通过正确实施结果对紫外线中量规耦合的初始条件的依赖性来建立此框架。然后，我们重新评估该框架自然解释宇宙学质量密度重合的能力，并找到减少的可行模型。我们确定可行模型的特征，使它们能够自然地关联深色重子和质子的质量，同时还避免对引入的新粒子含量的对撞机约束。
The asymmetric dark matter (ADM) paradigm is motivated by the apparent coincidence between the cosmological mass densities of visible and dark matter, $Ω_\mathrm{DM} \simeq 5Ω_\mathrm{VM}$. However, most ADM models only relate the number densities of visible and dark matter, and do not motivate the similarity in their particle masses. One exception is a framework introduced by Bai and Schwaller, where the dark matter is a confined state of a dark QCD-like gauge group, and the confinement scales of visible and dark QCD are related by a dynamical mechanism utilising infrared fixed points of the two gauge couplings. We build upon this framework by properly implementing the dependence of the results on the initial conditions for the gauge couplings in the UV. We then reassess the ability of this framework to naturally explain the cosmological mass density coincidence, and find a reduced number of viable models. We identify features of the viable models that allow them to naturally relate the masses of the dark baryon and the proton while also avoiding collider constraints on the new particle content introduced.
