论文标题
通过未来的CMB测量来探测暗物质
Probing Dark Matter with Future CMB Measurements
论文作者
论文摘要
暗物质（DM）在黑暗时代的灭绝和衰减会影响宇宙电离史，并在宇宙微波背景（CMB）各向异性光谱中留下烙印。 CMB极化各向异性可以对较高的红移时这种能量注入敏感，并有助于通过$λ$ CDM中的原始光谱参数和在恢复过程中的天体物理电离过程中降低退化。鉴于许多即将进行的CMB极化实验，例如Advactpol，Alicpt，Class，Simons天文台，Simons Array，SPT-3G，我们估计它们在探测暗物质灭绝和衰减信号方面的前瞻性敏感性。我们发现未来的任务有95 \％C.L. DM衰减和歼灭率的预计限制对$γ_χ（τ_χ^{ - 1}）\ Sim 10^{ - 27} {\ rm {s}}}^{ - 1} $ and $ sim 10^{ - 27} $ 10^{ - 29} {\ rm {cm^3s^{ - 1} gev^{ - 1}}}} $，从当前的实验界面显着提高了对DM的敏感性。
Dark Matter (DM) annihilation and decay during the Dark Ages can affect the cosmic ionization history and leave imprints in the Cosmic Microwave Background (CMB) anisotropy spectra. CMB polarization anisotropy can be sensitive to such energy injection at higher redshifts and help reducing degeneracy with primordial spectral parameters in $Λ$CDM and astrophysical ionization processes during reionization. In light of a number of upcoming CMB polarization experiments, such as AdvACTPol, AliCPT, CLASS, Simons Observatory, Simons Array, SPT-3G, we estimate their prospective sensitivity in probing dark matter annihilation and decay signals. We find that future missions have 95\% C.L. projected limits on DM decay and annihilation rates to orders of $Γ_χ(τ_χ^{-1}) \sim 10^{-27}{\rm{s}}^{-1}$ and $\left<σv \right>/m_χ \sim 10^{-29}{\rm{cm^3s^{-1}GeV^{-1}}}$ respectively, significantly improving the sensitivity to DM from current experimental bounds.
