Testing no-scale supergravity with the Fermi Space Telescope LAT
Testing no-scale supergravity with the Fermi Space Telescope LAT
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DOI：
10.1088/0954-3899/41/5/055006
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发表时间：
2013-11
期刊：
影响因子：
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通讯作者：
Tianjun Li;J. Maxin;D. Nanopoulos;Joel W. Walker
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文献类型：
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作者：
Tianjun Li;J. Maxin;D. Nanopoulos;Joel W. Walker
我们描述了一种通过费米太空望远镜上的 LAT 仪器通过观察最轻超对称 (SUSY) 中子湮灭产生的伽马射线发射来测试无尺度超重力的方法。对于我们的测试车辆，我们采用了 SUSY 大统一模型无尺度翻转 SU(5) 的框架，以及从 F 理论导出的额外矢量状翻转多重态，称为 F-SU(5)。我们表明，通过压缩轻态和轻双中性子质量差（其中内部轫致辐射光子占主导地位），超对称暗物质湮灭产生的光子产量可以提高到费米-LAT在未来几年可能观测到的许多事件。同样，如果额外的数据排除系统或统计解释，则无尺度 F-SU(5) 产量的增加也可能使 133 GeV 单色伽马射线线的现有观测变得可见。抛开强度问题不谈，无尺度 F-SU(5) 确实可以提供质量在正确范围内的自然弱相互作用大质量候选粒子，从而分别在类似于 133 GeV 的 m(chi) 和类似于 145 GeV 的 m(chi) 处产生伽马 gamma 和伽马 Z 发射线。此外，我们阐明了最近的普朗克卫星数据和模仿斯塔罗宾斯基暴胀模型的无尺度超重力宇宙学模型之间正在出现的经验联系。总之，这些实验为测试无规模 F-SU(5) 和类似结构的模型提供了丰富的替代途径，其结果可能为大型强子对撞机的观察结果提供独立的可信度。
We describe a methodology for testing no-scale supergravity by the LAT instrument onboard the Fermi Space Telescope via observation of gamma ray emissions from lightest supersymmetric (SUSY) neutralino annihilations. For our test vehicle we engage the framework of the SUSY grand unified model no-scale flipped SU(5) with extra vector-like flippon multiplets derived from F-theory, known as F-SU(5). We show that through compression of the light stau and light bino neutralino mass difference, where internal bremsstrahlung photons give a dominant contribution, the photon yield from annihilation of SUSY dark matter can be elevated to a number of events potentially observable by the Fermi-LAT in the coming years. Likewise, the increased yield in no-scale F-SU(5) may also have rendered the existing observation of a 133 GeV monochromatic gamma ray line visible, if additional data should exclude systematic or statistical explanations. The question of intensity aside, no-scale F-SU(5) can indeed provide a natural weakly interacting massive particle candidate with a mass in the correct range to yield gamma gamma and gamma Z emission lines at m(chi) similar to 133 GeV and m(chi) similar to 145 GeV, respectively. Additionally, we elucidate the emerging empirical connection between recent Planck satellite data and no-scale supergravity cosmological models which mimic the Starobinsky model of inflation. Together, these experiments furnish rich alternate avenues for testing no-scale F-SU(5), and similarly structured models, the results of which may lend independent credence to observations made at the Large Hadron Collider.