标题： 暗物质与弱电规范玻色子相互作用的界限 显示英文标题

标题： Bounds on Dark Matter Interactions with Electroweak Gauge Bosons

摘要： 我们研究暗物质主要通过弱电规范玻色子与标准模型相互作用的场景。我们采用一个有效场论框架，其中标准模型和暗物质粒子是唯一的轻态，以推导模型无关的限制。这些相互作用的限制来自于大型强子对撞机（LHC）上通过弱玻色子融合产生的暗物质、暗物质湮灭产物的间接探测搜索以及测量的 $Z^0$的不可见宽度。我们发现，对紫外尺度 $\Lambda$的限制对于大多数算符和暗物质质量值达到弱尺度值，从而探测了WIMP暗物质范式中最自然的场景。我们的限制表明，轻暗物质（根据算符不同为 $m_{\chi}\lsim m_Z/2$或 $m_{\chi}\lsim 100-200\gev$）不能仅与标准模型的弱电规范玻色子相互作用，而是需要额外的算符贡献或暗物质区结构以避免宇宙过度闭合。 显示英文摘要

摘要： We investigate scenarios in which dark matter interacts with the Standard Model primarily through electroweak gauge bosons. We employ an effective field theory framework wherein the Standard Model and the dark matter particle are the only light states in order to derive model-independent bounds. Bounds on such interactions are derived from dark matter production by weak boson fusion at the LHC, indirect detection searches for the products of dark matter annihilation and from the measured invisible width of the $Z^0$. We find that limits on the UV scale, $\Lambda$, reach weak scale values for most operators and values of the dark matter mass, thus probing the most natural scenarios in the WIMP dark matter paradigm. Our bounds suggest that light dark matter ($m_{\chi}\lsim m_Z/2$ or $m_{\chi}\lsim 100-200\gev$, depending on the operator) cannot interact only with the electroweak gauge bosons of the Standard Model, but rather requires additional operator contributions or dark sector structure to avoid overclosing the universe.