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arXiv 1102.1988hep-phastro-ph.CO
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太阳中NUHM LSP湮灭的中微子通量

Neutrino Fluxes from NUHM LSP Annihilations in the Sun

John Ellis, Keith A. Olive, Christopher Savage, Vassilis C. Spanos

摘要:

我们扩展了我们以前的研究,预计从中性中微子LSP湮灭太阳内部的中微子通量,包括变种的最小超对称扩展的标准模型(MSSM)与夸克,slepton和gaugino质量约束是普遍的大统一体尺度,但允许一个或两个非普遍的超对称性破坏参数贡献的希格斯质量(NUHM 1,2)。在具有普适希格斯质量的约束MSSM(CMSSM)中,NUHM参数空间中有很大的区域太阳内部的LSP密度不平衡,因此湮灭率可能远低于捕获率,也有很大的区域捕获率不受自旋相关LSP-质子散射的支配。NUHM中可能的光谱在性质上与CMSSM中的光谱相似。我们计算中微子引起的μ介子通量高于10 GeV的阈值能量,适合冰立方/深核探测器,NUHM产生正确的宇宙学遗迹密度的NUHM参数的代表性选择的点。我们发现,IceCube/DeepCore探测器可以探测NUHM参数空间的区域,除了类似的焦点带和从CMSSM熟悉的共湮灭带的尖端。这些区域包括增强的希格斯诺-高更诺混合的LSP组成,发生在中性伴子质量本征态交叉。另一方面,快速湮灭漏斗区一般产生的中微子通量小得无法观测。

英文摘要:

We extend our previous studies of the neutrino fluxes expected from neutralino LSP annihilations inside the Sun to include variants of the minimal supersymmetric extension of the Standard Model (MSSM) with squark, slepton and gaugino masses constrained to be universal at the GUT scale, but allowing one or two non-universal supersymmetry-breaking parameters contributing to the Higgs masses (NUHM1,2). As in the constrained MSSM (CMSSM) with universal Higgs masses, there are large regions of the NUHM parameter space where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate, and there are also large regions where the capture rate is not dominated by spin-dependent LSP-proton scattering. The spectra possible in the NUHM are qualitatively similar to those in the CMSSM. We calculate neutrino-induced muon fluxes above a threshold energy of 10 GeV, appropriate for the IceCube/DeepCore detector, for points where the NUHM yields the correct cosmological relic density for representative choices of the NUHM parameters. We find that the IceCube/DeepCore detector can probe regions of the NUHM parameter space in addition to analogues of the focus-point strip and the tip of the coannihilation strip familiar from the CMSSM. These include regions with enhanced Higgsino-gaugino mixing in the LSP composition, that occurs where neutralino mass eigenstates cross over. On the other hand, rapid-annihilation funnel regions in general yield neutrino fluxes that are unobservably small.

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