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arXiv 2409.03014hep-ph
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来自压缩弱挫败暗物质的单喷注

Monojets from compressed weak frustrated dark matter

Benjamin Fuks, Mark D. Goodsell, Taylor Murphy

AI总结:

本文扩展无超荷希格斯三重态模型,引入弱三重态狄拉克费米子和规范单态狄拉克费米子X,构建挫败暗物质框架,以同时解释约152 GeV新标量异常、暗物质遗迹丰度及单喷注超出,并规避多喷注约束。

摘要:

我们将所谓的无超荷希格斯三重态模型扩展,引入一个狄拉克费米子的弱三重态和一个在标准模型规范群下平凡变换的狄拉克费米子 $X$。我们的动机部分来源于一系列异常现象,这些异常可以被解释为一个质量约为 152 GeV 的新标量态,它与 $W$ 玻色子耦合但不与 $Z$ 玻色子耦合,这可能与该模型中的电中性三重态标量一致(前提是它与标准模型希格斯玻色子有非常轻微的混合)。同时,该模型中最轻的中性费米子是稳定的,如果它与中性三重态费米子轻微混合,使得暗物质主要由 $X$ 组成,则它可以成为具有正确遗迹丰度的热暗物质。由于 $X$ 仅通过与三重态对的类汤川相互作用与标准模型耦合,该模型属于挫败暗物质范式。最后,该模型中奇异费米子的谱可以表现出当前单喷注道超出所青睐的强压缩,并且在单喷注所青睐的区域中避开了多喷注约束。在这项工作中,我们探索了该模型的现象学,并比较了最适合上述各超出与约束的参数空间区域。

英文摘要:

We extend the so-called hyperchargeless Higgs triplet model to include a weak triplet of Dirac fermions and a Dirac fermion $X$ transforming trivially under the Standard Model gauge group. We are motivated in part by a collection of anomalies that can be interpreted as a new scalar state with mass of approximately 152 GeV coupling to $W$ but not $Z$ bosons, which may be consistent with the electrically neutral triplet scalar in this model (provided that it mixes very slightly with the Standard Model Higgs boson). Meanwhile, the lightest neutral fermion in the model is stable and can be thermal dark matter with the correct relic abundance if it mixes lightly with the neutral triplet fermion, such that the dark matter is composed mostly of $X$. Because $X$ couples to the Standard Model only through a Yukawa-like interaction with the pair of triplets, this model falls into the frustrated dark matter paradigm. Finally, the spectrum of exotic fermions in this model can exhibit the strong compression favored by the current excess in the monojet channel, and evades multijet constraints in the region favored by monojets. In this work we explore this model's phenomenology and compare the parameter space regions best suited to each of the aforementioned excesses and constraints.

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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