利用轴电效应探测太阳轴子的大型锗探测器阵列的潜力
The potential of large germanium detector arrays for solar-axion searches utilizing the axio-electric effect for detection
摘要：
在三种耦合情况下，研究了用于太阳轴子搜索的低本底锗探测器大阵列的灵敏度。在先前发表的IGEX暗物质实验的80 kgd数据中，对太阳核心热激发57 Fe的M1跃迁的14.4 keV轴子分支进行了搜索。在一种情况下，轴子与强子和电子的直接耦合被假定在佩切-奎因（PQ）标度范围内，3x 105 GeV < fPQ <7 x105 GeV。IGEX数据排除了这种情况。在第二种情况下，在相同的PQ尺度下，与光子和电子的耦合被抑制。IGEX的数据部分排除了这种情况，这取决于抑制的程度。在第三种情况下，所有耦合的PQ标度被假定在3x 106 GeV< fPQ <7 x106 GeV的范围内。检测率在锗的所有三种情况下。
英文摘要：
The sensitivities of large arrays of low-background germanium detectors for solar axion searches are investigated in the context of three coupling scenarios. A search was made for the 14.4-keV axion branch from the M1-transition in the thermally excited 57Fe in the solar core in 80 kgd of data from the IGEX Dark Matter experiment published earlier. In one scenario, the direct couplings of axions to hadrons and to electrons were assumed to be in the range of Peccei-Quinn (PQ) scale, 3x105 GeV < fPQ < 7x105 GeV. This scenario is excluded by the IGEX data. In a second case, at the same PQ scale, coupling to photons and to electrons are suppressed. The IGEX data partially excludes this scenario depending on the degree of suppression. In the third case, the PQ-scale for all couplings is assumed to be in the range: 3x106 GeV< fPQ <7x106 GeV. Detection rates in Ge for all three scenarios are presented.
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