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arXiv 1906.08282hep-phhep-ex
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在LHC上轻子味破坏重希格斯玻色子衰变到$τμ$的模型无关搜索策略

Model-independent search strategy for the lepton-flavor-violating heavy Higgs boson decay to $τμ$ at the LHC

Ernesto Arganda, Xabier Marcano, Nicolás I. Mileo, Roberto A. Morales, Alejandro Szynkman

摘要:

在这项工作中,我们提出了一个独立于模型的搜索策略,在大型强子对撞机的重希格斯玻色子衰变成一个τ和μ子,$H/A \rightarrow τμ$,显示出一个合理的趋势,以提高目前的实验限制所获得的灵敏度。该搜索策略是针对质量范围为1-5 TeV的希格斯玻色子玻色子执行的,并且使用作为最相关的运动学变量,以区分信号与背景、μ子和τ的横向动量以及丢失的横向能量。我们估计排除限为95% C. L。以及在$\sqrt{s}$ = 14 TeV和$\cal{L}$ = 300 fb $^{-1}$下的证据和发现的意义,观察到高希格斯玻色子质量的灵敏度的增长。此外,由于希格斯玻色子衰变为$τ$ -轻子对可能模拟我们的LFV信号,我们还研究了ditau通道对排斥限的影响以及证据和发现的意义。特别是,LFV重希格斯玻色子玻色子衰变的排斥极限的影响是显着的ditau率开始竞争时,相应的$H/A \rightarrow τμ$衰变。

英文摘要:

In this work we present a model-independent search strategy at the LHC for heavy Higgs bosons decaying into a tau and a muon, $H/A \rightarrow τμ$, showing a plausible tendency to improve the sensitivity obtained by the present experimental limits. This search strategy is performed for the Higgs boson mass range 1-5 TeV and uses as the most relevant kinematical variables, in order to discriminate signal against background, the transverse momenta of the muon and the tau together with the missing transverse energy. We estimate the exclusion limits at 95% C.L. and the significances for evidence and discovery at $\sqrt{s}$ = 14 TeV with $\cal{L}$ = 300 fb$^{-1}$, observing a growth in the sensitivities for high Higgs boson masses. Moreover, since the Higgs boson decay into a $τ$-lepton pair may mimic our LFV signal, we also study the impact of the ditau channel on the exclusion limits and the significances for evidence and discovery. In particular, the impact on the exclusion limits of LFV heavy Higgs boson decays is significant when the ditau rate begins to compete with the corresponding to the $H/A \rightarrow τμ$ decay.

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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