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arXiv 0910.0193hep-ex
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在LHC用ATLAS探测器通过H -> WW衰变模式发现标准模型希格斯玻色子的可能性

Discovery Potential of the Standard Model Higgs Boson Through H -> WW Decay Mode with the ATLAS Detector at LHC

Hai-Jun Yang

摘要:

我们报告的研究结果的标准模型希格斯玻色子玻色子的发现潜力,通过W-对轻子衰变模式与ATLAS探测器在LHC在14 TeV的质心能量。我们使用具有全探测器模拟和ATLAS实验重建的MC样品来估计在最终状态中没有硬射流或有两个硬射流的pp -> H -> WW -> eνμν反应的ATLAS探测灵敏度。展望了ATLAS对希格斯玻色子玻色子的研究前景,包括触发效率和利用控制样本数据估计背景的数据驱动方法。在10/fb的积分亮度下,人们期望用ATLAS探测器在135 < m_H < 190 GeV的希格斯玻色子质量范围内发现标准模型希格斯玻色子。如果希格斯玻色子不存在,我们将扩展并确认Tevatron希格斯玻色子搜索结果产生的排除,该结果在95%的置信水平下排除了160 < m_H < 170 GeV的希格斯玻色子质量范围。如果希格斯玻色子被发现,ATLAS可以分别以2和7 GeV的精度测量其质量,其中希格斯玻色子的质量约为160 GeV和130 GeV。

英文摘要:

We report results of a study of the Standard Model Higgs boson discovery potential through the W-pair leptonic decay modes with the ATLAS detector at LHC at 14 TeV center-of-mass energy. We used MC samples with full detector simulation and reconstruction of the ATLAS experiment to estimate the ATLAS detection sensitivity for the reaction of pp -> H -> WW -> eνμνwith no hard jet or two hard jets in the final states. The prospects for the Higgs boson searches at ATLAS are presented, including trigger efficiencies and data-driven methods to estimate the backgrounds using control samples in data. With 10/fb of integrated luminosity, one would expect to discover a Standard Model Higgs boson with ATLAS detector in Higgs boson mass range 135 < m_H < 190 GeV. If the Higgs boson does not exist, we will extend and confirm the exclusion produced by the Tevatron Higgs boson search result, which has ruled out the Higgs boson mass range of 160 < m_H < 170 GeV at 95% confidence level. If Higgs boson would be discovered, ATLAS could measure its mass with a precision of about 2 and 7 GeV for Higgs boson mass around 160 GeV and 130 GeV, respectively.

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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