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arXiv 1503.04203hep-phhep-lat
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隐形暗物质:暗标量重子通过希格斯门

Stealth Dark Matter: Dark scalar baryons through the Higgs portal

Thomas Appelquist, Richard C. Brower, Michael I. Buchoff, George T. Fleming, Xiao-Yong Jin, Joe Kiskis, Graham D. Kribs, Ethan T. Neil, James C. Osborn, Claudio… 展开作者

Thomas Appelquist, Richard C. Brower, Michael I. Buchoff, George T. Fleming, Xiao-Yong Jin, Joe Kiskis, Graham D. Kribs, Ethan T. Neil, James C. Osborn, Claudio Rebbi, Enrico Rinaldi, David Schaich, Chris Schroeder, Sergey Syritsyn, Pavlos Vranas, Evan Weinberg, Oliver Witzel

摘要:

我们提出了一个新的“隐形暗物质“模型:一个$SU(N_D)$强耦合理论与偶$N_D \geq 4$的复合重子标量。所有的质量尺度在技术上都是自然的,暗物质的稳定性是自动的,不需要额外的离散或整体对称性。组分费米子在电弱群的类矢量表示中变换,允许电弱破缺和电弱保持质量项。这使得隐形暗物质与希格斯玻色子的可调谐耦合独立于暗物质本身的质量。我们专注于$SU(4)$,并调查从暗介子衰变,电弱精密测量,基本对撞机限制,并通过希格斯交换自旋独立的直接检测散射模型的约束。我们利用我们以前的晶格模拟,确定复合光谱以及有效的希格斯耦合的隐形暗物质,以放置从直接检测的界限,不包括成分费米子占主导地位的电弱破质量。从LEP II观测不到最轻的暗介子这一间接条件出发,得到了暗重子质量$m_B \gtrsim 300$ GeV的下限.我们简要地调查了一些有趣的属性隐形暗物质,是值得未来的研究,包括:碰撞研究暗介子的生产和衰变;间接检测信号湮灭;遗迹丰度估计对称和不对称的机制;和直接检测通过电磁极化率,详细的研究将出现在配套文件。

英文摘要:

We present a new model of "Stealth Dark Matter": a composite baryonic scalar of an $SU(N_D)$ strongly-coupled theory with even $N_D \geq 4$. All mass scales are technically natural, and dark matter stability is automatic without imposing an additional discrete or global symmetry. Constituent fermions transform in vector-like representations of the electroweak group that permit both electroweak-breaking and electroweak-preserving mass terms. This gives a tunable coupling of stealth dark matter to the Higgs boson independent of the dark matter mass itself. We specialize to $SU(4)$, and investigate the constraints on the model from dark meson decay, electroweak precision measurements, basic collider limits, and spin-independent direct detection scattering through Higgs exchange. We exploit our earlier lattice simulations that determined the composite spectrum as well as the effective Higgs coupling of stealth dark matter in order to place bounds from direct detection, excluding constituent fermions with dominantly electroweak-breaking masses. A lower bound on the dark baryon mass $m_B \gtrsim 300$ GeV is obtained from the indirect requirement that the lightest dark meson not be observable at LEP II. We briefly survey some intriguing properties of stealth dark matter that are worthy of future study, including: collider studies of dark meson production and decay; indirect detection signals from annihilation; relic abundance estimates for both symmetric and asymmetric mechanisms; and direct detection through electromagnetic polarizability, a detailed study of which will appear in a companion paper.

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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