LHC上最小耦合伸缩子共形标度的界和多轻子特征
Bounds on the Conformal Scale of a Minimally Coupled Dilaton and Multi-Leptonic Signatures at the LHC
摘要：
我们探讨了潜在的发现一个电子$\mathcal{O}(200-500)$ GeV的标准模型的经典尺度/共形不变的扩展，通过调查的大小相应的破缺规模$Λ$在大型强子对撞机，扩展以前的分析。特别是，我们解决最近的界限$Λ$来自希格斯玻色子搜索。我们调查，如果这样的一个轻子可以通过胶子-胶子融合产生，呈现其衰变为一对希格斯玻色子玻色子或两个重规范玻色子，这可能会导致多轻子的最终状态的速率。通过PYTHIA-FastJet进行了详细的分析占主导地位的标准模型背景，在14 TeV的质量中心的能量。我们表明，早期的数据$\sim 20$ fb $^{-1}$可以肯定地探测到该区域的参数空间中，这样的一个光子是允许的。5 TeV的共形尺度是允许的，目前的数据，几乎所有的值的研究的介子质量。
英文摘要：
We explore the potential for the discovery of a dilaton $\mathcal{O}(200-500)$ GeV in a classical scale/conformal invariant extension of the Standard Model by investigating the size of the corresponding breaking scale $Λ$ at the LHC, extending a previous analysis. In particular, we address the recent bounds on $Λ$ derived from Higgs boson searches. We investigate if such a dilaton can be produced via gluon-gluon fusion, presenting rates for its decay either into a pair of Higgs bosons or into two heavy gauge bosons, which can give rise to multi-leptonic final states. A detailed analysis via PYTHIA-FastJet has been carried out of the dominant Standard Model backgrounds, at a centre of mass energy of 14 TeV. We show that early data of $\sim 20$ fb$^{-1}$ can certainly probe the region of parameter space where such a dilaton is allowed. A conformal scale of 5 TeV is allowed by the current data, for almost all values of the dilaton mass investigated.
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