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arXiv 1302.4454hep-phastro-ph.HEhep-ex
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环诱导自旋无关相互作用对暗物质直接探测的重要性

On the importance of loop-induced spin-independent interactions for dark matter direct detection

Ulrich Haisch, Felix Kahlhoefer

摘要:

大型强子对撞机寻找与横向能量缺失有关的喷流的最新结果对暗物质的散射截面提出了强有力的限制。对于自旋相关或动量抑制相互作用的情况下,这些限制似乎优于直接检测实验的界限。在这篇文章中,我们表明,循环的贡献可以显着改变这一结论,并提高直接检测界限,每当他们诱导自旋无关的相互作用。这种效应对于张量和赝张量相互作用最为显著,它们在回路水平上引起磁和电偶极矩。对于axialvector和anapole相互作用的直接检测信号的相关贡献来自环诱导的汤川之间的暗物质和夸克的耦合。此外,我们比较由此产生的界限,这些有效的运营商所产生的间接搜索和遗物密度的要求额外的限制。

英文摘要:

The latest results from LHC searches for jets in association with missing transverse energy place strong bounds on the scattering cross section of dark matter. For the case of spin-dependent or momentum suppressed interactions these limits seem to be superior to the bounds from direct detection experiments. In this article, we show that loop contributions can significantly alter this conclusion and boost direct detection bounds, whenever they induce spin-independent interactions. This effect is most striking for tensor and pseudotensor interactions, which induce magnetic and electric dipole moments at loop level. For axialvector and anapole interactions a relevant contribution to direct detection signals arises from loop-induced Yukawa-like couplings between dark matter and quarks. We furthermore compare the resulting bounds to additional constraints on these effective operators arising from indirect searches and relic density requirements.

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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