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arXiv 1002.2441hep-ph
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太阳WIMP湮灭中微子对θ_13的味敏感性和质量等级

Flavor sensitivity to theta_13 and the mass hierarchy for neutrinos from solar WIMP annihilation

Ralf Lehnert, Thomas J. Weiler

摘要:

本文讨论了高能第二共振和伴随的绝热-非绝热跃迁对中微子在太阳物质中传播的影响。对于WIMP湮灭中微子注入的能量在“甜区”之间的300 MeV和10 GeV的太阳的中心,一个显着的和揭示的依赖中微子质量等级和混合角θ_13下降到0.5度的味道比到达地球。此外,在甜区的风味比的放大允许更好地区分太阳暗物质的可能的湮灭模式。在对WIMP性质的温和假设下,估计在甜区需要200个中微子事件才能推断θ_13、质量等级和主导的WIMP湮灭模式。如果要进行测量,可能需要未来的大容量低能中微子探测器。

英文摘要:

The effect of the higher-energy 2nd resonance and the associated adiabatic-to-nonadiabatic transition on neutrino propagation in solar matter is presented. For WIMP-annihilation neutrinos injected with energies in the "sweet region" between 300 MeV and 10 GeV at the Sun's center, a significant and revealing dependence on the neutrino mass hierarchy and the mixing angle theta_13 down to 0.5 degrees is found in the flavor ratios arriving at Earth. In addition, the amplification of flavor ratios in the sweet region allows a better discrimination among possible annihilation modes of the solar dark matter. Under mild assumptions on WIMP properties, it is estimated that 200 neutrino events in the sweet region would be required for inferences of theta_13, the mass hierarchy, and the dominant WIMP annihilation mode. Future large-volume, low-energy neutrino detectors are likely needed if the measurement is to be made.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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