LHC searches for dark sector showers
LHC searches for dark sector showers
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DOI：
10.1007/jhep11(2017)196
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发表时间：
2017-11-29
影响因子：
5.4
通讯作者：
Mishra-Sharma, Siddharth
中科院分区：
文献类型：
--
作者：
Cohen, Timothy;Lisanti, Mariangela;Mishra-Sharma, Siddharth
本文提出了一种在大型强子对撞机（LHC）上寻找暗扇形部分子簇射的新方案。这些签名出现在以隐藏部门的强动态为特征的理论中，例如隐藏谷模型。暗部分子簇可以由不可见的暗物质粒子和暗扇区状态组成，暗扇区状态通过入口衰变为标准模型粒子。这里的重点是“半可见喷流”的具体情况，喷流状的对撞机对象，在淋浴中的可见状态是标准模型强子。我们提出了一个简化的模型参数化的大型强子对撞机观测，并提出了有针对性的搜索策略的参数空间区域，不包括现有的分析。在“单X”文献之后，使用有效场论接触算子方法或两个紫外线完成中的一个来模拟门户;为所有三种情况提供灵敏度预测。我们还强调，在寻找这类暗物质理论的直接检测实验中，LHC具有独特的优势。
This paper proposes a new search program for dark sector parton showers at the Large Hadron Collider (LHC). These signatures arise in theories characterized by strong dynamics in a hidden sector, such as Hidden Valley models. A dark parton shower can be composed of both invisible dark matter particles as well as dark sector states that decay to Standard Model particles via a portal. The focus here is on the specific case of 'semi-visible jets,' jet-like collider objects where the visible states in the shower are Standard Model hadrons. We present a Simplified Model-like parametrization for the LHC observables and propose targeted search strategies for regions of parameter space that are not covered by existing analyses. Following the ' mono-X ' literature, the portal is modeled using either an effective field theoretic contact operator approach or with one of two ultraviolet completions; sensitivity projections are provided for all three cases. We additionally highlight that the LHC has a unique advantage over direct detection experiments in the search for this class of dark matter theories.