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arXiv 1008.2690hep-phhep-ex
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用横向质量变量测量希格斯玻色子质量

Measuring the Higgs boson mass with transverse mass variables

Kiwoon Choi, Jae Sik Lee, Chan Beom Park

摘要:

我们提供了一个比较研究的希格斯玻色子玻色子的质量测量的基础上的两种方法的双轻子衰变的W玻色子产生的希格斯玻色子玻色子衰变,一个使用的运动学变量M_T^真实和其他使用的M_T2辅助壳重建的不可见中微子动量。我们发现这两种方法对于LHC上SM希格斯玻色子玻色子的两种主要产生机制,即胶子-胶子融合和弱矢量玻色子融合,都能以相似的精度确定希格斯玻色子玻色子的质量。我们还注意到,在M_T2切割下,胶子-胶子融合的Higgs信号分布变得更窄,而相应的背景分布变得更平坦,这表明通过适当的M_T2切割可以降低质量测量的系统不确定性。

英文摘要:

We provide a comparative study of the Higgs boson mass measurements based on two approaches to the dileptonic decay of W bosons produced by the Higgs boson decay, one using the kinematic variable M_T^true and the other using the M_T2-assisted on-shell reconstruction of the invisible neutrino momenta. We find that these two approaches can determine the Higgs boson mass with a similar accuracy for both of the two main production mechanisms of the SM Higgs boson at the LHC, i.e. the gluon-gluon fusion and the weak vector boson fusion. We also notice that the Higgs signal distribution for the gluon-gluon fusion becomes narrower under the M_T2 cut, while the corresponding background distribution becomes flatter, indicating that one might be able to reduce the systematic uncertainties of mass measurement with an appropriate M_T2 cut.

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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