论文标题
搜索从暗物质灭绝到100 TEV到银河中心的伽马射线光谱线
Search for Gamma-ray Spectral Lines from Dark Matter Annihilation up to 100 TeV towards the Galactic Center with MAGIC
论文作者
论文摘要
TEV $γ$ - 砂中的类似线的特征构成了TEV规模粒子暗物质和新物理学的“吸烟枪”。用地面Cherenkov望远镜探测银河中心区域，使搜索TEV光谱特征直接与密集的暗物质储层相关联，无法触及卫星$γ$射线检测器，并直接检测和碰撞剂实验。我们报告了223小时对银河中心区域的观测，其魔术立体望远镜系统达到了$γ$ - 射线的能量，最高可达100 TEV。我们使用大型角度观测值和在能量域中最大的样本分析中提高了高能观察者对光谱线的敏感性。在我们的分析中，没有发现线状光谱特征。 Therefore, we constrain the cross section for dark matter annihilation into two photons to $\langle σv \rangle \lesssim 5 \times 10^{-28}\,\mathrm{cm^3\,s^{-1}}$ at 1 TeV and $\langle σv \rangle \lesssim 1 \times 10^{ - 25} \，\ mathrm {cm^3 \，s^{ - 1}} $在100 tev处，达到了迄今为止在20 tev高于20的暗物质质量和银河系中心的cuspy暗物质概况的最佳限制。最后，我们使用Cuspy和Cored暗物质概况的派生极限来限制超对称Wino模型。
Line-like features in TeV $γ$-rays constitute a ''smoking gun'' for TeV-scale particle dark matter and new physics. Probing the Galactic Center region with ground-based Cherenkov telescopes enables the search for TeV spectral features in immediate association with a dense dark matter reservoir at a sensitivity out of reach for satellite $γ$-ray detectors, and direct detection and collider experiments. We report on 223 hours of observations of the Galactic Center region with the MAGIC stereoscopic telescope system reaching $γ$-ray energies up to 100 TeV. We improved the sensitivity to spectral lines at high energies using large-zenith-angle observations and a novel background modeling method within a maximum-likelihood analysis in the energy domain. No line-like spectral feature is found in our analysis. Therefore, we constrain the cross section for dark matter annihilation into two photons to $\langle σv \rangle \lesssim 5 \times 10^{-28}\,\mathrm{cm^3\,s^{-1}}$ at 1 TeV and $\langle σv \rangle \lesssim 1 \times 10^{-25}\,\mathrm{cm^3\,s^{-1}}$ at 100 TeV, achieving the best limits to date for a dark matter mass above 20 TeV and a cuspy dark matter profile at the Galactic Center. Finally, we use the derived limits for both cuspy and cored dark matter profiles to constrain supersymmetric wino models.
