Coherent photon scattering background in sub-GeV /c 2 direct dark matter searches
Coherent photon scattering background in sub-GeV /c 2 direct dark matter searches
复制标题
sub-GeV /c 2 直接暗物质搜索中的相干光子散射背景
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
A. Robinson
中科院分区：
文献类型：
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作者：
A. Robinson
建议暗物质探测器与eV规模的灵敏度将检测到一个大的背景原子（核）反冲相干光子散射。这一背景在低于$sim10$~eVnr时急剧攀升，远远超过低能康普顿反冲的下降速率。即将到来的新一代暗物质探测器将不会受到这种背景的限制，但eV级和亚eV级探测器的进一步发展将需要使用低Z目标材料，如氦，以避免大速率的相干光子散射，或高效的方法来拒绝光子散射。
Proposed dark matter detectors with eV-scale sensitivities will detect a large background of atomic (nuclear) recoils from coherent photon scattering. This background climbs steeply below $sim10$~eVnr, far exceeding the declining rate of low-energy Compton recoils. The upcoming generation of dark matter detectors will not be limited by this background, but further development of eV-scale and sub-eV detectors will require the use of low-$Z$ target materials, such as helium, to avoid a large rate of coherent photon scattering, or highly efficient methods to reject photons when they scatter.