识别大型强子对撞机（LHC）中146 GeV超出量的起源
Identifying the origin of the 146-GeV excess at the LHC
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中文总结 AI 辅助
针对LHC的146 GeV超出量起源，提出$H\gamma$等三个产生道以区分两种竞争解释，结合高亮度LHC数据可获得7.6的显著性，助力新物理线索的甄别。
中文摘要 AI 辅助
CMS合作组报告的电子-缪子末态中146 GeV超出量，为新物理提供了诱人的线索。对于146 GeV共振的起源，存在两种相互竞争的解释：一是通过与标准模型希格斯玻色子混合产生，二是通过质子内的海电子和海子产生的轻子味产生。鉴于该超出量可能在大型强子对撞机（LHC）第三运行期末仍存在，我们提出三个相关的产生道：$H\gamma$、$H j$和$H jj$，可用于区分这两种可能的情景。以双希格斯二重态模型（2HDM）为例，我们估计，利用高亮度LHC的3000 fb⁻¹数据，$H\gamma$道可提供区分混合情景与轻子味情景的显著分辨力，显著性为7.1；将其与另外两个道$H j$和$H jj$结合，显著性可提升至7.6。
英文摘要
The 146-GeV excess in the electron-muon final state reported by the CMS Collaboration offers a tantalizing hint for new physics. There are two competing explanations for the origin of the 146-GeV resonance: production via mixing with the Standard Model Higgs boson and leptophilic production through sea electrons and muons inside the proton. In anticipation that such an excess may still persist by the end of LHC Run 3, we propose three related production channels $Hγ$, $H j$, and $H jj$, which could be used to distinguish between these two possible scenarios. Taking the two-Higgs-doublet model (2HDM) as an explicit example, we estimate that with $3000~\text{fb}^{-1}$ of the high-luminosity LHC data, the $Hγ$ channel can provide a striking discriminating power between the mixing and leptophilic scenarios with a significance of 7.1. Combining it with the other two channels, $H j$ and $H jj$, the significance can be pushed up to 7.6.
