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arXiv 1407.1833hep-phhep-ex
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简并Gaugino质量区与单玻色子对撞机特征

Degenerate gaugino mass region and mono-boson collider signatures

Archana Anandakrishnan, Linda M. Carpenter, Stuart Raby

摘要:

在本文中,我们讨论的搜索策略,在大型强子对撞机的轻电弱gauginos大多是Wino的,希格斯诺的或混合物。这些状态通常是简并的,衰变产物能量较低,因此难以检测。此外,它们在强子对撞机上的产生截面与色态(如胶子)相比受到抑制。为了检测这些状态,需要触发初始或最终状态辐射。许多以前的分析集中在单射流和单光子触发。在本文中,我们认为,这些触发是不可能成功的,由于大的背景QCD背景的单喷流搜索和事实,即$p_T$分布的单光子是迅速减少的功能$p_T$。我们表明,这两个在初始状态辐射的光子的解析计算,也是一个详细的数值分析。然后,我们认为,单Z触发器,从Z衰变成带电轻子可能提供最好的搜索策略,特别是希格斯诺和混合的情况下。

英文摘要:

In this paper we discuss search strategies at the LHC for light electroweak gauginos which are mostly Wino-like, Higgsino-like or an admixture. These states are typically degenerate with decay products that are less energetic and hence difficult to detect. In addition, their production cross-sections at a hadron collider are suppressed compared to colored states such as the gluinos. In order to detect these states one needs to trigger on initial or final state radiation. Many previous analyses have focussed on mono-jet and mono-photon triggers. In the paper we argue and show that these triggers are unlikely to succeed, due to the large background from QCD backgrounds for the mono-jet searches and the fact that the $p_T$ distribution of the mono-photons are rapidly decreasing functions of $p_T$. We show this with both an analytic calculation of photons in the initial state radiation and also a detailed numerical analysis. We then argue that mono-Z triggers, from Z decaying into charged leptons may well provide the best search strategy, in particular for Higgsino-like and mixed cases.

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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