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arXiv 1301.6065hep-exhep-ph
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寻找带电希格斯玻色子:利用LEP数据的综合结果

Search for Charged Higgs bosons: Combined Results Using LEP Data

Aleph, Delphi, L3, OPAL Collaborations, the LEP working group for Higgs boson searches

摘要:

LEP的四个合作项目ALEPH、DELPHI、L3和OPAL在双希格斯偶线模型(2 HDMs)的框架下寻找成对产生的带电希格斯玻色子。将四个实验的数据进行统计合并。结果在2 HDM中解释为I型和II型基准情景。当与标准模型背景预测相比时,没有观察到统计学上显著的过量,并且组合的LEP数据排除了模型参数空间的大区域。在95%的置信水平下,质量低于80 GeV/c^2(第二类情形)或72.5 GeV/c^2(第一类情形,赝标量质量高于12 GeV/c^2)的带电希格斯玻色子被排除在外。

英文摘要:

The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments are statistically combined. The results are interpreted within the 2HDM for Type I and Type II benchmark scenarios. No statistically significant excess has been observed when compared to the Standard Model background prediction, and the combined LEP data exclude large regions of the model parameter space. Charged Higgs bosons with mass below 80 GeV/c^2 (Type II scenario) or 72.5 GeV/c^2 (Type I scenario, for pseudo-scalar masses above 12 GeV/c^2) are excluded at the 95% confidence level.

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