论文标题
使用白矮星对轻粒子的限制
Constraints on light dark matter particles using white dwarf stars
论文作者
论文摘要
我们使用观察到的白色矮星恒星的内部发光度在球状簇中杂物4中报告了对核子漆黑物质粒子横截面的限制。我们的结果涵盖了与质量范围相对较轻的暗物质粒子相对应的参数空间，$ 0.1〜GEV-5〜GEV $，已知很难通过直接的深色搜索来探测这很难探测。来自恒星内部捕获的暗物质颗粒的自我宣传的额外光度不得超过观察到的光度。施加这种情况，我们为Baryons $σ_{nχ} $上限的光线暗物质粒子的自旋独立横截面获得了上限：$σ_{nχ} <4 \ times 10^{ - 41} {\ rm cm cm^2} $。
We report constraints on the nucleon-dark matter particle cross section using the internal luminosity of observed white dwarf stars in the globular cluster Messier 4. Our results cover the parameter space corresponding to relatively light dark matter particles, in the mass range $0.1~GeV-5~GeV$, which is known to be very difficult to be probed by direct dark matter searches. The additional luminosity coming from self-annihilations of dark matter particles captured inside the stars must not exceed the observed luminosity. Imposing that condition, we obtain for the spin independent cross section of light dark matter particles on baryons $σ_{Nχ}$ the upper bound: $σ_{Nχ} < 4 \times 10^{-41}{\rm cm^2}$.
