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arXiv 1902.08211hep-ph
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复合孪生暗物质

Composite Twin Dark Matter

John Terning, Christopher B. Verhaaren, Kyle Zora

摘要:

我们考虑兄弟双希格斯模型中的双底夸克,$b'$,是比双禁闭尺度重得多。在这个极限下,夸克束缚态的各个方面,如质量和结合能,都可以精确计算。我们表明,在这种制度下,暗物质可以主要由含有$b' b' b'$的孪生重子组成,或者当孪生超荷被测量时,孪生原子,由一个重子与一个孪生$τ'$轻子结合组成。我们发现,有显着的区域参数空间,这是允许当前的限制,但在不久的将来检测的范围内。双原子的情况可以缓解从矮星系和星系团推断出的暗物质性质之间的紧张关系。

英文摘要:

We consider Fraternal Twin Higgs models where the twin bottom quark, $b'$, is much heavier than the twin confinement scale. In this limit aspects of quark bound states, like the mass and binding energy, can be accurately calculated. We show that in this regime, dark matter can be primarily made of twin baryons containing $b' b' b'$ or, when twin hypercharge is gauged, twin atoms, composed of a baryon bound to a twin $τ'$ lepton. We find that there are significant regions of parameter space which are allowed by current constraints but within the realm of detection in the near future. The case with twin atoms can alleviate the tension between dark matter properties inferred from dwarf galaxies and clusters.

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