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arXiv 2008.11792hep-ph
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重态S3暗双重态的间接探测前景

Prospects of Indirect Detection for the Heavy S3 Dark Doublet

C. Espinoza, M. Mondragón

摘要:

我们分析了在重DM质量区的Dark S3模型,该模型的特点是包含标量$SU(2)$偶极暗物质候选者的SM标量扇区的S3对称扩展。我们使用公开可用的工具来计算,除了传统的物理约束的参数空间的模型,索末菲增强因子为现今的湮灭截面和似然配置文件的一个模拟的观测运行的后发座Berenices矮星系的切伦科夫望远镜阵列。我们的研究结果不赞成质量超过$\sim$ 5 TeV,主要是因为生产过剩的暗物质不符合遗迹丰度观测;我们还发现了一个中等规模的区域,质量在1.2和4.9 TeV之间,预测DM遗迹的正确值,此外还有一个轻标量与SM希格斯玻色子的特征(即在去耦极限内类似于THDM)。我们的结果与模型独立的排除曲线HESS和其他CTA模拟的比较表明,这些限制下降短的湮灭截面的值只有一个数量级,以排除模型的最佳拟合点。

英文摘要:

We present an analysis of the Dark S3 model in the heavy DM mass region, this model features an S3 symmetric extension of the scalar sector of the SM including a scalar $SU(2)$ doublet dark matter candidate. We use publicly available tools to compute, in addition to conventional physical constraints on the parameter space of the model, the Sommerfeld enhancement factors for the present day annihilation cross section and the likelihood profile for a simulation of an observation run by the Cherenkov Telescope Array of the Coma Berenices dwarf galaxy. Our results disfavour masses above $\sim$5 TeV mainly because of overproduction of dark matter not consistent with the relic abundance observations; we also find a moderately large region with masses in between 1.2 and 4.9 TeV which predict the correct value of the DM relic and in addition have a light scalar with the characteristics of the SM Higgs boson (i.e. within the decoupling limit akin to the THDM). Comparison of our results with model independent exclusion curves from HESS and other CTA simulations show that these limits fall short only an order of magnitude in the value of the annihilation cross section in order to exclude the best fit point of the model.

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