组合H.E.S.S.的约束超对称性的含义。矮星系、星系晕和星系中心的观测
Implications for constrained supersymmetry of combined H.E.S.S. observations of dwarf galaxies, the Galactic halo and the Galactic Centre
摘要：
为了使用$γ$ -射线观测对暗物质（DM）属性进行限制，以前的分析通常假设$γ$ -射线湮灭产额的非常简单的参数化;通常，假设湮灭仅通过单个通道进行。在现实的DM模型中，湮灭可能发生在许多不同的最终状态，这是一个相当粗略的分析。随着虚内韧致辐射和终态辐射等附加过程的出现，这种假设变得更加不正确，并且明确需要扫描明确的模型参数空间。在这里，我们提出了扫描的参数空间的约束最小超对称标准模型（CMSSM），考虑$γ$射线光谱从三个矮星系，银河系中心区域和更广泛的星系晕，获得与高能立体系统（H.E.S.S.）。我们提出了一系列的可能性扫描结合H.E.S.S.数据与其他实验结果。我们发现，人马座，船底座和玉夫座矮星系的观测不赞成的CMSSM和模型具有大的湮灭截面的共湮灭区域。这是真实的，即使在合理的假设DM密度分布，并构成了最强的约束，到目前为止共湮灭模型内的CMSSM。星系晕也有类似的效应，但较弱。银河系中心的搜索是复杂的一个强大的（未知的）$γ$射线源，我们看到没有影响CMSSM参数空间时，假设一个现实的银河系中心DM密度分布。
英文摘要：
In order to place limits on dark matter (DM) properties using $γ$-ray observations, previous analyses have often assumed a very simple parametrisation of the $γ$-ray annihilation yield; typically, it has been assumed that annihilation proceeds through a single channel only. In realistic DM models, annihilation may occur into many different final states, making this quite a rough ansatz. With additional processes like virtual internal bremsstrahlung and final state radiation, this ansatz becomes even more incorrect, and the need for scans of explicit model parameter spaces becomes clear. Here we present scans of the parameter space of the Constrained Minimal Supersymmetric Standard Model (CMSSM), considering $γ$-ray spectra from three dwarf galaxies, the Galactic Centre region and the broader Galactic halo, as obtained with the High-Energy Stereoscopic System (H.E.S.S.). We present a series of likelihood scans combining the H.E.S.S. data with other experimental results. We show that observations of the Sagittarius, Carina and Sculptor dwarf galaxies disfavour the coannihilation region of the CMSSM and models with large annihilation cross-sections. This is true even under reasonable assumptions about the DM density profiles, and constitutes the strongest constraint to date on coannihilation models within the CMSSM. The Galactic halo has a similar, but weaker, effect. The Galactic Centre search is complicated by a strong (unknown) $γ$-ray source, and we see no effect on the CMSSM parameter space when assuming a realistic Galactic Centre DM density profile.
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