arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.6088hep-phastro-ph.COhep-ex
收藏

直接探测轴子暗物质的新观测量

New Observables for Direct Detection of Axion Dark Matter

Peter W. Graham, Surjeet Rajendran

备注：
15 pages, 5 figures, 1 table, Journal version with material added on daily modulation and directional detection based on referee comments
发表信息：
Physical Review D 88, 035023 (2013)
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们提出了新的信号，用于直接探测超轻暗物质，如轴子。轴子或类轴子粒子（ALP）暗物质可以被认为是一个背景，经典领域。我们认为耦合这个领域引起的可观察到的影响，包括核电偶极矩，轴向核子和电子的时刻。这些力矩以实验室中可获得的频率（~ kHz至GHz）快速振荡，由暗物质质量给出。因此，与WIMP探测相反，我们不是寻找单个暗物质粒子的硬散射，而是寻找整个经典暗物质场的相干效应。我们计算当前的界限，这样的时间变化的时刻，并考虑利用NMR方法来搜索诱导自旋进动的技术。这些技术探测的参数空间远远超出了目前的天体物理学极限，并显着扩展了实验室探测。自旋进动是寻找这些超轻粒子的一种方法，但很可能有许多新类型的实验可以利用这种时变时刻来寻找暗物质。

英文摘要：

We propose new signals for the direct detection of ultralight dark matter such as the axion. Axion or axion like particle (ALP) dark matter may be thought of as a background, classical field. We consider couplings for this field which give rise to observable effects including a nuclear electric dipole moment, and axial nucleon and electron moments. These moments oscillate rapidly with frequencies accessible in the laboratory, ~ kHz to GHz, given by the dark matter mass. Thus, in contrast to WIMP detection, instead of searching for the hard scattering of a single dark matter particle, we are searching for the coherent effects of the entire classical dark matter field. We calculate current bounds on such time varying moments and consider a technique utilizing NMR methods to search for the induced spin precession. The parameter space probed by these techniques is well beyond current astrophysical limits and significantly extends laboratory probes. Spin precession is one way to search for these ultralight particles, but there may well be many new types of experiments that can search for dark matter using such time-varying moments.

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。

↑