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arXiv 1503.05505hep-ph
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简化的SIMP和LHC

Simplified SIMPs and the LHC

Nadir Daci, Isabelle De Bruyn, Steven Lowette, Michel H. G. Tytgat, Bryan Zaldivar

摘要:

暗物质以强相互作用大质量粒子(SIMPs)的形式存在,可能是天体物理学观测的结果,挑战了经典的冷暗物质假设。其他观察结果极大地限制了SIMP替代方案,但并不完全排除。在大型强子对撞机上,SIMPs的特征可能包括成对产生的中性、强子状、无轨喷流。我们表明,带电内容的情况下,可以提供一个非常有效的工具来抑制在LHC的dijet背景,从而提高潜在的SIMP信号的灵敏度。我们说明了这一点,使用简化的SIMP模型,并提出了详细的可行性研究的基础上模拟,包括一个专用的检测器响应参数化。我们评估了预期的灵敏度,各种信号的情况下,并试探性地考虑与核子的SIMP弹性截面的排斥限制。

英文摘要:

The existence of Dark Matter (DM) in the form of Strongly Interacting Massive Particles (SIMPs) may be motivated by astrophysical observations that challenge the classical Cold DM scenario. Other observations greatly constrain, but do not completely exclude, the SIMP alternative. The signature of SIMPs at the LHC may consist of neutral, hadron-like, trackless jets produced in pairs. We show that the absence of charged content can provide a very efficient tool to suppress dijet backgrounds at the LHC, thus enhancing the sensitivity to a potential SIMP signal. We illustrate this using a simplified SIMP model and present a detailed feasibility study based on simulations, including a dedicated detector response parametrization. We evaluate the expected sensitivity to various signal scenarios and tentatively consider the exclusion limits on the SIMP elastic cross section with nucleons.

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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