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arXiv 1706.04512hep-ph
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强子对撞机上缺失横能的谱分解

Spectral Decomposition of Missing Transverse Energy at Hadron Colliders

Kyu Jung Bae, Tae Hyun Jung, Myeonghun Park

摘要:

我们提出了一个光谱分解系统地提取信息的暗物质在强子对撞机。具有缺失横向能量(MET)的事件的微分截面可以由基函数的线性组合表示。在暗物质粒子产生的$s$ -通道介质模型中,基函数由虚介质和可见粒子产生子过程的微分截面确定,基函数系数以Källén-Lehmann谱分解的方式对应于暗物质的暗物质不变质量分布.对于一个给定的MET数据集和介质模型,我们表明,可以区分从另一个通过光谱分解的某种暗物质-介质相互作用。

英文摘要:

We propose a spectral decomposition to systematically extract information of dark matter at hadron colliders. The differential cross section of events with missing transverse energy (MET) can be expressed by a linear combination of basis functions. In the case of $s$-channel mediator models for dark matter particle production, basis functions are identified with the differential cross sections of sub-processes of virtual mediator and visible particle production while the coefficients of basis functions correspond to dark matter invariant mass distribution in the manner of the Källén-Lehmann spectral decomposition. For a given MET data set and mediator model, we show that one can differentiate a certain dark matter-mediator interaction from another through spectral decomposition.

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