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arXiv 2107.09688hep-ph
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关闭WIMP暗物质的窗口

Closing the window on WIMP Dark Matter

Salvatore Bottaro, Dario Buttazzo, Marco Costa, Roberto Franceschini, Paolo Panci, Diego Redigolo, Ludovico Vittorio

摘要:

我们研究的情况下,暗物质是一个弱相互作用粒子(WIMP)嵌入在电弱多重态。特别是,我们考虑真正的SU(2)表示零超荷,自动避免直接检测约束的树级Z-交换。我们首次计算了标量和费米子WIMP的所有可计算的热质量,包括索末菲增强和束缚态的形成在领先的规范玻色子交换和发射。几百TeV的WIMP质量被证明是兼容的湮灭截面的s波么正性,和微扰性。我们还提供了所有多重态质量的理论不确定性,这对于大SU(2)多重态是重要的。然后,我们概述了在未来的实验中探索这些场景的策略。电弱3-plets和5-plets的质量高达约16 TeV,可以在高能μ子对撞机上有效地探测。我们研究各种实验签名,如单和双规范玻色子发射丢失的能量,和消失的轨道,并确定探测热暗物质质量所需的对撞机能量和光度。更大的多重态是任何现实的未来对撞机都无法达到的,但可以在未来的伽马射线望远镜中进行测试,并可能在大曝光液体氙实验中进行测试。

英文摘要:

We study scenarios where Dark Matter is a weakly interacting particle (WIMP) embedded in an ElectroWeak multiplet. In particular, we consider real SU(2) representations with zero hypercharge, that automatically avoid direct detection constraints from tree-level Z-exchange. We compute for the first time all the calculable thermal masses for scalar and fermionic WIMPs, including Sommerfeld enhancement and bound states formation at leading order in gauge boson exchange and emission. WIMP masses of few hundred TeV are shown to be compatible both with s-wave unitarity of the annihilation cross-section, and perturbativity. We also provide theory uncertainties on the masses for all multiplets, which are shown to be significant for large SU(2) multiplets. We then outline a strategy to probe these scenarios at future experiments. Electroweak 3-plets and 5-plets have masses up to about 16 TeV and can efficiently be probed at a high energy muon collider. We study various experimental signatures, such as single and double gauge boson emission with missing energy, and disappearing tracks, and determine the collider energy and luminosity required to probe the thermal Dark Matter masses. Larger multiplets are out of reach of any realistic future collider, but can be tested in future gamma ray telescopes and possibly in large-exposure liquid Xenon 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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