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arXiv hep-ph/9608317hep-phhep-ex
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如何在LHC上找到质量在155- 180 GeV之间的希格斯玻色子

How to find a Higgs Boson with a Mass between 155--180 GeV at the LHC

M. Dittmar, H. Dreiner

摘要:

我们重新考虑了两个带电轻子和丢失能量的事件的签名作为在质量区域M(Higgs)=155- 180 GeV中检测标准模型希格斯玻色子的信号。结果表明,几个简单的实验标准允许区分事件起源于希格斯玻色子衰变到H --> W+W-从非共振产生的W+ W-X在LHC。利用这组切割,获得约1:1的信号与背景比,允许以约5-fb-1的亮度进行5- 10西格玛检测。这相当于在初始较低光度L= 10**33/ cm**2/sec下运行不到一年。这明显优于迄今为止所考虑的Higgs探测模式H --> Z Z* --> 1 + 1 + 1 - 1-,其中在该质量范围内,5 σ信号需要约100~fb-1的积分亮度。

英文摘要:

We reconsider the signature of events with two charged leptons and missing energy as a signal for the detection of the Standard Model Higgs boson in the mass region M(Higgs)=155--180 GeV. It is shown that a few simple experimental criteria allow to distinguish events originating from the Higgs boson decaying to H --> W+W- from the non resonant production of W+W- X at the LHC. With this set of cuts, signal to background ratios of about one to one are obtained, allowing a 5--10 sigma detection with about 5~fb-1 of luminosity. This corresponds to less than one year of running at the initial lower luminosity L= 10**33/ cm**2/sec. This is significantly better than for the hitherto considered Higgs detection mode H --> Z Z* --> l+ l+ l- l-, where in this mass range about 100~fb-1 of integrated luminosity are required for a 5 sigma signal.

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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