论文标题
最终达到当前成像大气Cherenkov望远镜及其对Tev暗物质的敏感性
Toward the ultimate reach of current imaging atmospheric Cherenkov telescopes and their sensitivity to TeV dark matter
论文作者
论文摘要
间接检测为探测热暗物质（DM）的独特窗口：确定早期宇宙中遗物丰度的相同an灭过程驱动了当今的天体物理信号。尽管数十年来无毫无疑问的TEV规模粒子弱耦合到标准模型毫无疑问的挑战，但场景仍然令人信服，而诸如Higgsino DM之类的简单实现仍然很大程度上尚未探索。这种情况的命运可以通过对大气Cherenkov望远镜（IACTS）进行成像的伽马射线观察来确定。我们考虑当前IACTS对广泛的TEV规模DM候选者的最终敏感性 - 包括特定的DM候选者，例如Wino，Higgsino和Quintuplet。为此，我们使用现实的模拟H.E.S.S.S.S.S.式观察到内部银河系光环，并仔细评估了银河系中心地区最近的银河系质量建模，工具性和天体物理背景不确定性的影响，以及对预测信号的理论不确定性。我们发现，内部银河系中IACT搜索的主要系统性是该区域中DM的未知分布，但是，除此之外，搜索目前在统计上占主导地位，这表明更多的观察结果持续了好处。对于两体的最终状态$ 1〜 {\ rm tev} $，我们发现H.E.S.S.S.S.S.S.S.类似天文台对$ \ langleσv\ rangle \ sim 3 \ sim 3 \ sim 3 \ times 10^{ - 26} -4 \ times 10^{-25} { - 25}〜{ - 25}〜{\ rm cm cm} $ cm} $ cm} $ 1}最终国家，尽管我们发现结果与Antares竞争。另外，可以探测Wino和Quintuplet的热量。希格西诺（Higgsino）至少要少数几个。我们的结论也与下一代Cherenkov望远镜阵列直接相关，该序列阵列仍然可以很好地成为热DM的发现工具。
Indirect detection opens a unique window for probing thermal dark matter (DM): the same annihilation process that determined the relic abundance in the early Universe drives the present day astrophysical signal. While TeV-scale particles weakly coupled to the Standard Model face undoubted challenges from decades of null searches, the scenario remains compelling, and simple realizations such as Higgsino DM remain largely unexplored. The fate of such scenarios could be determined by gamma-ray observations of the centre of the Milky Way with Imaging Atmospheric Cherenkov Telescopes (IACTs). We consider the ultimate sensitivity of current IACTs to a broad range of TeV-scale DM candidates - including specific ones such as the Wino, Higgsino, and Quintuplet. To do so, we use realistic mock H.E.S.S.-like observations of the inner Milky Way halo, and provide a careful assessment of the impact of recent Milky Way mass modeling, instrumental and astrophysical background uncertainties in the Galactic Center region, and the theoretical uncertainty on the predicted signal. We find that the dominant systematic for IACT searches in the inner Galaxy is the unknown distribution of DM in that region, however, beyond this the searches are currently statistically dominated indicating a continued benefit from more observations. For two-body final states at $1~{\rm TeV}$, we find a H.E.S.S.-like observatory is sensitive to $\langle σv \rangle \sim 3 \times 10^{-26}-4 \times 10^{-25}~{\rm cm}^3{\rm s}^{-1}$, except for neutrino final states, although we find results competitive with ANTARES. In addition, the thermal masses for the Wino and Quintuplet can be probed; the Higgsino continues to be out of reach by at least a factor of a few. Our conclusions are also directly relevant to the next generation Cherenkov Telescope Array, which remains well positioned to be the discovery instrument for thermal DM.
