论文标题
约束由白色矮人的轻标量介导的暗物质相互作用
Constraining dark matter interactions mediated by a light scalar with white dwarfs
论文作者
论文摘要
在深色物质环境中对白矮人的观察可以为暗物质相互作用的强度提供强大的限制。在这里，我们将最近改进的白色矮人暗物质捕获率的形式主义应用于一个通用模型，在该模型中，暗物质通过轻标量介质与白色矮小离子组件相互作用。我们从球状簇杂交中的冷白矮人中计算出光质捕获率在光学上薄的极限中。然后，我们估计阈值横截面，该阈值在$ 0.05 \，m_χ<m_ϕ <m_χ$的范围内随着光标准介质质量$ m_ϕ $的函数而变化，并在$ m_ϕ>m_χ$时变为恒定。我们还表明，从球形群集Messier 4中从暗物质捕获中获得的边界是直接检测实验的补充，在子GEV策略中尤其强。
Observations of white dwarfs in dark matter-rich environments can provide strong limits on the strength of dark matter interactions. Here we apply the recently improved formalism of the dark matter capture rate in white dwarfs to a general model in which dark matter interacts with the white dwarf ion components via a light scalar mediator. We compute the dark matter capture rate in the optically thin limit in a cold white dwarf from the globular cluster Messier. We then estimate the threshold cross-section, which significantly varies as a function of the light scalar mediator mass $m_ϕ$ in the range of $0.05\, m_χ<m_ϕ<m_χ$ and becomes constant when $m_ϕ>m_χ$. We also show that the bounds obtained from the dark matter capture in a white dwarf from the globular cluster Messier 4 are complementary to direct detection experiments and particularly strong in the sub-GeV regime.
