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arXiv 1003.2204hep-ph
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从LHC单级级联衰变中提取暗物质质量

Extracting the Dark Matter Mass from Single Stage Cascade Decays at the LHC

Timothy Cohen, Eric Kuflik, Kathryn M. Zurek

摘要:

我们探索的MT 2运动学变量,使暗物质质量测量简单,一个阶段,级联衰变的一个变种。这将被证明是有用的约束一个子集的超对称过程,或一类亲轻暗物质模型在大型强子对撞机。我们调查了这些测量的统计范围,并讨论了哪些误差源的影响最大。例如,我们发现,仅使用具有初始态辐射的单级级联衰变,对于母质量为300 GeV的150 GeV的暗物质候选者的测量可以达到O(10%),其产生截面为100 fb和100 fb^(-1)的积分亮度。

英文摘要:

We explore a variant on the MT2 kinematic variable which enables dark matter mass measurements for simple, one stage, cascade decays. This will prove useful for constraining a subset of supersymmetric processes, or a class of leptophilic dark matter models at the LHC. We investigate the statistical reach of these measurements and discuss which sources of error have the largest effects. For example, we find that using only single stage cascade decays with initial state radiation, a measurement of a 150 GeV dark matter candidate can be made to O(10%) for a parent mass of 300 GeV with a production cross section of 100 fb and 100 fb^(-1) of integrated luminosity.

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