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arXiv 2104.03294hep-phhep-ex
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新的$(g-2)_μ$结果和$μν$ SSM

The new $(g-2)_μ$ result and the $μν$SSM

Sven Heinemeyer, Essodjolo Kpatcha, Iñaki Lara, Daniel E. López-Fogliani, Carlos Muñoz, Natsumi Nagata

摘要:

$μν$ SSM是MSSM的高度预测性替代模型。特别是,模型的电弱部分可以解释μ子异常磁矩$(g-2)_μ$的实验结果与标准模型预测之间长期存在的差异,同时与所有其他理论和实验约束一致。最近发表的MUON G-2结果在$0.8\,σ$范围内,与BNL在$(g-2)_μ$上的旧结果一致。合并的结果被宣布为$a_μ^{\rm exp} = (11659206.1 \pm 4.1) \times 10^{-10}$,产生了一个新的偏离标准模型预测的$Δa_μ= (25.1 \pm 5.9) \times 10^{-10}$,对应于$4.2\,σ$。使用这个改进的边界,我们更新了在$μν$ SSM中的分析,如参考文献[1]所示,并对模型的电弱扇区的允许参数空间设置了新的限制。我们的结论是,该模型的显着区域可以解释新的$(g-2)_μ$数据。

英文摘要:

The $μν$SSM is a highly predictive alternative model to the MSSM. In particular, the electroweak sector of the model can explain the longstanding discrepancy between the experimental result for the anomalous magnetic moment of the muon, $(g-2)_μ$, and its Standard Model prediction, while being in agreement with all other theoretical and experimental constraints. The recently published MUON G-2 result is within $0.8\,σ$ in agreement with the older BNL result on $(g-2)_μ$. The combined result was announced as $a_μ^{\rm exp} = (11659206.1 \pm 4.1) \times 10^{-10}$, yielding a new deviation from the Standard Model prediction of $Δa_μ= (25.1 \pm 5.9) \times 10^{-10}$, corresponding to $4.2\,σ$. Using this improved bound we update the analysis in the $μν$SSM as presented in Ref. [1] and set new limits on the allowed parameters space of the electroweak sector of the model. We conclude that significant regions of the model can explain the new $(g-2)_μ$ data.

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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