论文标题
洛伦兹违规对带电瘦素的异常磁矩的影响
Impact of Lorentz violation on anomalous magnetic moments of charged leptons
论文作者
论文摘要
我们解决了一个问题，是否违反了洛伦兹对称性可以解释MUON（$（G-2）_ $）的测量和标准模型预测之间的张力，以及它是否可以显着影响电子（$（G-2）_ {e} $）。尽管通常，虽然各向异性洛伦兹侵入效应通常会在可观察到的恒星振荡中产生恒星振荡，但在带电的勒普顿部门中违反各向同性的洛伦兹可能会进食$（g-2）_ {e，μ} $。但是，我们发现这种类型的Lorentz违规行为通过标准模型扩展（SME）的DIM-4场算子进行了参数，这已经受到缺乏真空Čerenkov辐射和光子衰减的强烈限制。特别是，LHC（ICECUBE）对LHAASO和高能电子（MUON）对非常高的天体光子（MUON）的观察到了相关的SME系数$ \ Overset $ \ overset {\ circ} {c} { （$ \ Overset {\ Circ} {C} {}^{（μ）} $）。因此，排除了$（g-2）_ $中张力的任何解释，包括违反对最小自旋脱位中小企业的侵犯，并且对$（g-2）$的影响可能的大小可能非常有限。
We address the question whether a violation of Lorentz symmetry can explain the tension between the measurement and the Standard-Model prediction of the anomalous magnetic moment of the muon ($(g-2)_μ$) and whether it can significantly impact the one of the electron ($(g-2)_{e}$). While anisotropic Lorentz-violating effects are, in general, expected to produce sidereal oscillations in observables, isotropic Lorentz violation in the charged-lepton sector could feed into $(g-2)_{e,μ}$. However, we find that this type of Lorentz violation, parametrised via a dim-4 field operator of the Standard-Model Extension (SME), is already strongly constrained by the absence of vacuum Čerenkov radiation and photon decay. In particular, the observations of very-high-energetic astrophysical photons at LHAASO and of high-energetic electrons (muons) by the LHC (IceCube) place the most stringent two-sided bounds on the relevant SME coefficients $\overset{\circ}{c}{}^{(e)}$ ($\overset{\circ}{c}{}^{(μ)}$). Therefore, any explanation of the tension in $(g-2)_μ$ via isotropic Lorentz violation of the minimal spin-degenerate SME is excluded, and the possible size of its impact on $(g-2)_{e}$ is very limited.
