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arXiv 1307.7623astro-ph.CO
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毫相互作用暗物质

Milli-interacting Dark Matter

Quentin Wallemacq

摘要:

我们提出的暗物质模型很好地再现了DAMA/LIBRA和CoGeNT的结果,与XENON 100和CDMS-II/Ge的负结果没有矛盾。两种新的费米子F和G通过无质量暗光子的暗U(1)规范相互作用形成了具有标准原子尺寸的类氢原子。核F和中性标量粒子S之间的汤川耦合引起吸引的短程相互作用。这个暗区与我们的标准粒子相互作用,因为存在两种混合,一种是动力学光子-暗光子混合,另一种是质量σ-S混合。来自晕的暗原子在地球物质中弹性扩散,直到它们热化,然后到达具有热能的地下探测器,在那里它们通过辐射捕获与原子核形成束缚态。这导致光子的发射,产生直接搜索实验观察到的信号。

英文摘要:

We present a dark matter model reproducing well the results from DAMA/LIBRA and CoGeNT and having no contradiction with the negative results from XENON100 and CDMS-II/Ge. Two new species of fermions F and G form hydrogen-like atoms with standard atomic size through a dark U(1) gauge interaction carried out by a dark massless photon. A Yukawa coupling between the nuclei F and neutral scalar particles S induces an attractive shorter-range interaction. This dark sector interacts with our standard particles because of the presence of two mixings, a kinetic photon-dark photon mixing, and a mass σ-S mixing. The dark atoms from the halo diffuse elastically in terrestrial matter until they thermalize and then reach underground detectors with thermal energies, where they form bound states with nuclei by radiative capture. This causes the emission of photons that produce the signals observed by direct-search experiments.

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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