Effects of nuclear deformation on the form factor for direct dark matter detection

Effects of nuclear deformation on the form factor for direct dark matter detection
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核变形对直接暗物质探测形状因子的影响

DOI:
10.1088/1674-1137/36/6/005
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发表时间:
2011-12
期刊:
影响因子:
3.6
通讯作者:
Li Xueqian
Li Xueqian
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Chen Yazheng;Chen Junmou;Luo Yanan;Shen Hong;Li Xueqian

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对于直接暗物质的探测,为了从数据中提取有关基本相互作用的有用信息,正确确定核形状因子至关重要。暗物质粒子与核碰撞的自旋无关截面的形状因子已经被许多作者深入研究。在进行分析时,核总是假定为球对称的。在这项工作中,我们研究的形状因子的影响,从一个球形的核变形到一个椭圆形的。我们的结果表明,只要椭圆率不是太大,这种变形不会造成任何实质性的影响。特别是,当原子核在室温下随机取向时,人们可以完全忽略它们。
For the detection of direct dark matter, in order to extract useful information about the fundamental interactions from the data, it is crucial to properly determine the nuclear form factor. The form factor for the spin-independent cross section of collisions between dark matter particles and the nucleus has been thoroughly studied by many authors. When the analysis was carried out, the nuclei were always supposed to be spherically symmetric. In this work, we investigate the effects of the deformation of nuclei from a spherical shape to an elliptical one on the form factor. Our results indicate that as long as the ellipticity is not too large, such deformation will not cause any substantial effects. In particular, when the nuclei are randomly orientated in room-temperature circumstances, one can completely neglect them.
DOI: 10.1016/0370-2693(91)90712-y
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