标题： 电弱对称性破缺与暗物质遗迹密度之间的相互作用 显示英文标题

标题： Interplay between Electroweak Symmetry Breaking and Dark Matter Relic Density

摘要： 暗物质模型必须应对宇宙热演化过程中电弱对称性破缺的存在所引起的后果，这会改变质量、相互作用以及因此热平均截面。 我们详细研究了在计算暗物质遗迹密度时考虑（或不考虑）电弱对称性破缺存在的影响，并提供了这种差异的无模型依赖度量。 通过专注于一个特定模型，我们表明忽略此效应可能导致错误（可行）参数空间区域的包含（排除）。 显示英文摘要

摘要： Models of Dark Matter must contend with the fact that the presence of electroweak symmetry breaking along the thermal evolution of the Universe modifies the masses, interactions and, thus, the thermally averaged cross sections. We study in detail the impact of taking (not taking) the presence of the electroweak symmetry breaking into account in the calculations of the Dark Matter relic density, providing a model-independent measure of such differences. By focusing on a particular model, we show that ignoring this effect can lead to the inclusion (exclusion) of wrong (viable) regions of parameter space.