Light WIMPs in the Sun: Constraints from Helioseismology
Light WIMPs in the Sun: Constraints from Helioseismology
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DOI：
10.1103/physrevd.82.103503
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发表时间：
2010-05
影响因子：
5
通讯作者：
D. Cumberbatch;J. Guzik;J. Silk;L. Watson;S. West
中科院分区：
文献类型：
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作者：
D. Cumberbatch;J. Guzik;J. Silk;L. Watson;S. West
我们计算了包括质量为 5-50 GeV 的暗物质 (DM) 弱相互作用大质量粒子 (WIMP) 的太阳模型，并针对声速、对流区深度、对流区氦丰度和低阶 p 模的小间隔的日震约束来测试这些模型。我们的主要结论是，通过使用太阳作为 5-50 GeV 质量范围内的 WIMP DM 粒子的探针，可以对直接探测实验和粒子加速器进行补充。对该探针最敏感的 DM 抑制了湮灭，并具有较大的自旋相关弹性散射截面。对于此处探讨的 WIMP 截面参数，由于核心声速和低频频率间距的限制，排除了小于 10 GeV 的最轻 WIMP 质量。对于质量为 30-50 GeV 的 WIMP，太阳结构的变化仅限于太阳半径内部 4%，因此不会显着影响太阳 p 模。未来的日震学观测（尤其是涉及 g 模式）和未来的太阳中微子实验可能能够将允许的 DM 参数空间限制在当前感兴趣的直接检测质量范围内。
We calculate solar models including dark matter (DM) weakly-interacting massive particles (WIMPs) of mass 5-50 GeV and test these models against helioseismic constraints on sound speed, convection zone depth, convection zone helium abundance, and small separations of low-degree pmodes. Our main conclusion is that both direct detection experiments and particle accelerators may be complemented by using the Sun as a probe for WIMP DM particles in the 5-50 GeV mass range. The DM most sensitive to this probe has suppressed annihilations and a large spin-dependent elastic scattering cross section. For the WIMP cross-section parameters explored here, the lightest WIMP masses < 10 GeV are ruled out by constraints on core sound speed and low-degree frequency spacings. For WIMP masses 30-50 GeV, the changes to the solar structure are conned to the inner 4% of the solar radius and so do not signicantly aect the solar p-modes. Future helioseismology observations, most notably involving g-modes, and future solar neutrino experiments may be able to constrain the allowable DM parameter space in a mass range that is of current interest for direct detection.