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arXiv 1006.5019hep-ph
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Electroweak/TeV标度下隐藏的额外U(1)

Hidden Extra U(1) at the Electroweak/TeV Scale

B. N. Grossmann, B. McElrath, S. Nandi, Santosh Kumar Rai

摘要:

我们提出了一个简单的扩展的标准模型(SM)通过添加一个额外的U(1)对称,这是隐藏的SM部门。这种隐藏的U(1)以前没有被考虑过,它在TeV尺度上的存在可以在LHC上探索。这个隐藏的U(1)不直接耦合到SM粒子,只耦合到新的SU(2)_L单重奇异夸克和单重希格斯玻色子,并且在TeV尺度上被破坏。在高能强子对撞机上的主要信号是多轻子和多b-jet末态,有或没有丢失能量。我们计算的信号率,以及相应的标准模型背景这些最终状态。一个非常独特的信号是6个高p_T的b-喷流在最终状态,没有丢失的能量。对于大范围的奇异夸克质量,在大型强子对撞机的背景之上可以观察到信号。

英文摘要:

We propose a simple extension of the Standard Model (SM) by adding an extra U(1) symmetry which is hidden from the SM sector. Such a hidden U(1) has not been considered before, and its existence at the TeV scale can be explored at the LHC. This hidden U(1) does not couple directly to the SM particles, and couples only to new SU(2)_L singlet exotic quarks and singlet Higgs bosons, and is broken at the TeV scale. The dominant signals at the high energy hadron colliders are multi lepton and multi b-jet final states with or without missing energy. We calculate the signal rates as well as the corresponding Standard Model background for these final states. A very distinctive signal is 6 high p_T b-jets in the final state with no missing energy. For a wide range of the exotic quarks masses the signals are observable above the background at the LHC.

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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