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arXiv 0806.3917hep-ph
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直接寻找暗物质--平衡与未来

Direct Search for Dark Matter - Striking the Balance - and the Future

V. A. Bednyakov, H. V. Klapdor-Kleingrothaus

摘要:

弱相互作用大质量粒子(WIMPs)是遗迹暗物质(DM)的主要候选者之一。直接DM检测的想法依赖于WIMP与靶核的弹性自旋相关(SD)和自旋无关(SI)相互作用。本文综述了WIMP事件率计算的有关公式。为了估计WIMP-质子和WIMP-中子SD和SI截面,使用有效低能最小超对称标准模型。传统的一个耦合优势的排斥曲线的评价方法进行了说明。进一步讨论了混合自旋-标量耦合方法。以高自旋Ge-73暗物质实验HDMS为例,说明了如何通过混合自旋-标量耦合方法以及从测量光谱中扣除背景的新方法,大幅度提高排斥曲线的灵敏度。一般的讨论从排斥曲线获得的信息。明确的WIMP直接检测签名的暗物质问题的解决方案的必要性,指出。

英文摘要:

Weakly Interacting Massive Particles (WIMPs) are among the main candidates for the relic dark matter (DM). The idea of the direct DM detection relies on elastic spin-dependent (SD) and spin-independent (SI) interaction of WIMPs with target nuclei. In this review paper the relevant formulae for WIMP event rate calculations are collected. For estimations of the WIMP-proton and WIMP-neutron SD and SI cross sections the effective low-energy minimal supersymmetric standard model is used. The traditional one-coupling-dominance approach for evaluation of the exclusion curves is described. Further, the mixed spin-scalar coupling approach is discussed. It is demonstrated, taking the high-spin Ge-73 dark matter experiment HDMS as an example, how one can drastically improve the sensitivity of the exclusion curves within the mixed spin-scalar coupling approach, as well as due to a new procedure of background subtraction from the measured spectrum. A general discussion on the information obtained from exclusion curves is given. The necessity of clear WIMP direct detection signatures for a solution of the dark matter problem, is pointed out.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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