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arXiv 1902.01488hep-ph
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通过LHC上的矢量玻色子融合过程的Anapole暗物质

Anapole Dark Matter via Vector Boson Fusion Processes at the LHC

Andrés Flórez, Alfredo Gurrola, Will Johns, Jessica Maruri, Paul Sheldon, Kuver Sinha, Savanna Rae Starko

摘要:

暗物质是电中性的,但通过高维算子耦合到电磁流,这构成了一类有趣的模型。我们在大型强子对撞机上研究了这类模型,重点研究了有效场论(EFT)框架下的阿那普尔矩算子,并利用了矢量玻色子融合(VBF)拓扑。假设质子-质子碰撞在$\sqrt{s} = 13$ TeV,我们提出的VBF的Anapole暗物质(ADM)的截面和运动学分布的函数的自由参数的EFT,截止尺度$Λ$和ADM质量$m_χ$。我们发现,独特的VBF拓扑结构的两个前喷流和大的双喷流赝快度间隙是有效的减少SM背景,导致$5σ$发现范围为所有运动学允许的ADM质量与$Λ\le 1.65$(1.15)TeV,假设一个积分亮度为3000(100)fb $^{-1}$。

英文摘要:

Dark matter that is electrically neutral but couples to the electromagnetic current through higher-dimensional operators constitutes an interesting class of models. We investigate this class of models at the Large Hadron Collider, focusing on the anapole moment operator in an effective field theory (EFT) framework, and utilizing the vector boson fusion (VBF) topology. Assuming proton-proton collisions at $\sqrt{s} = 13$ TeV, we present the VBF anapole dark matter (ADM) cross sections and kinematic distributions as functions of the free parameters of the EFT, the cutoff scale $Λ$ and the ADM mass $m_χ$. We find that the distinctive VBF topology of two forward jets and large dijet pseudorapidity gap is effective at reducing SM backgrounds, leading to a $5σ$ discovery reach for all kinematically allowed ADM masses with $Λ\le 1.65$ (1.15) TeV, assuming an integrated luminosity of 3000 (100) fb$^{-1}$.

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