论文标题
用S1和S2探测放松的放松和希格斯 - 门户
Probing the relaxed relaxion and Higgs-portal with S1 & S2
论文作者
论文摘要
我们研究了最近在太阳标量的情况下，特别是在希格斯 - 港口和松弛模型的框架中的\ xet多余。我们表明$ m_ϕ = 1.9 \，\ kev $和$ g_ {ϕe} = 2.4 \ times 10^{ - 14} $可以解释科学运行1（SR1）分析中1-7 KEV范围内观察到的过量分析。当翻译成标量 - higgs混合角时，相应的混合角$ \sinθ= 10^{ - 8} $有趣地接近了标量质量的技术自然性的混合角度的最大值。与太阳轴模型不同，由于其较柔和的光谱，多余的人会有利于大规模的标量场。在我们考虑的最小情况下，最佳拟合参数与出色的冷却边界处于紧张状态。我们讨论了大密度的红色巨星可能触发相变的可能性，从而导致局部标量质量增加抑制了恒星冷却。对于最小的放松场景的特殊情况，我们发现这种类型的变色龙效应会自动存在，但无法缓解冷却边界。但是，它们能够在整个宇宙中触发灾难性的相变。在此观察之后，我们在放松的 - 浮肿参数空间上得出了一组新的边界。
We study the recent \XeT excess in context of solar scalar, specifically in the framework of Higgs-portal and the relaxion model. We show that $m_ϕ= 1.9\,\keV$ and $g_{ϕe}=2.4\times 10^{-14}$ can explain the observed excess in science run 1 (SR1) analysis in the 1-7 keV range. When translated into the scalar-Higgs mixing angle, the corresponding mixing angle $\sinθ= 10^{-8}$ is intriguingly close to the maximum value of mixing angle for the technical naturalness of the scalar mass. Unlike the solar axion model, the excess favors a massive scalar field because of its softer spectrum. In the minimal scenarios we consider, the best fit parameters are in tension with stellar cooling bounds. We discuss a possibility that a large density of red giant stars may trigger a phase transition, resulting in a local scalar mass increase suppressing the stellar cooling. For the particular case of minimal relaxion scenarios, we find that such type of chameleon effects is automatically present but they can not ease the cooling bounds. They are however capable of triggering a catastrophic phase transition in the entire universe. Following this observation we derive a new set of bounds on the relaxed-relaxion parameter space.
