在2 HDM内解析电子和μ子$g-2$
Resolving electron and muon $g-2$ within the 2HDM
摘要：
最近对电子反常磁矩（AMM）的精确测量增加了μ子AMM的长期张力，并共同强烈指向超越标准模型（BSM）的物理学。在这项工作中，我们提出了一个解决方案，这两个异常在一个经济的方式通过光标量出现从第二个希格斯偶极子和驻留在$\mathcal{O}(10)$ -MeV的$\mathcal{O}(1)$ -GeV的质量范围产生正确的大小和符号，这些偏差由于一个循环和两个循环的优势，分别为μ子和电子。这种类型的标量受到许多不同的实验约束，然而，正如我们所示，它可以通过逃避所有实验边界保持足够轻，并具有很大的潜力，在不久的将来被发现的低能量实验。这里提供的分析同样适用于任何BSM方案，其中允许轻标量与带电轻子具有相当大的味对角耦合。除了光标量，我们的理论预测存在一个近简并的带电标量和赝标量，它们的质量的顺序的电弱标度。我们分析了在对撞机上探测新物理信号的可能方法，发现这种情况可以在大型强子对撞机上通过观察带电希格斯玻色子的同号对产生的新过程$pp \to H^\pm H^\pm jj \to l^\pm l^\pm j j + {E\!\!\!\!/}_{T}$来测试。
英文摘要：
Recent precise measurement of the electron anomalous magnetic moment (AMM) adds to the longstanding tension of the muon AMM and together strongly point towards physics beyond the Standard Model (BSM). In this work, we propose a solution to both anomalies in an economical fashion via a light scalar that emerges from a second Higgs doublet and resides in the $\mathcal{O}(10)$-MeV to $\mathcal{O}(1)$-GeV mass range yielding the right sizes and signs for these deviations due to one-loop and two-loop dominance for the muon and the electron, respectively. A scalar of this type is subject to a number of various experimental constraints, however, as we show, it can remain sufficiently light by evading all experimental bounds and has the great potential to be discovered in the near-future low-energy experiments. The analysis provided here is equally applicable to any BSM scenario for which a light scalar is allowed to have sizable flavor-diagonal couplings to the charged leptons. In addition to the light scalar, our theory predicts the existence of a nearly degenerate charged scalar and a pseudoscalar, which have masses of the order of the electroweak scale. We analyze possible ways to probe new-physics signals at colliders and find that this scenario can be tested at the LHC by looking at the novel process $pp \to H^\pm H^\pm jj \to l^\pm l^\pm j j + {E\!\!\!\!/}_{T}$ via same-sign pair production of charged Higgs bosons.
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。
