发表机构
Karadeniz Technical University; CERN（黑海技术大学; 欧洲核子研究中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用PandaX-4T和XENONnT的太阳中微子-电子散射数据，为无异常暗光子模型在六个基准模型参数空间推导新排除界限，并改进亚MeV质量区间的现有限制，展现与全球暗物质搜索的互补性。
AI 中文摘要
我们利用来自吨级PandaX-4T和XENONnT实验的低能太阳中微子-电子弹性散射数据，研究了无异常暗光子模型的唯象学意义。聚焦于包含动力学混合和质量混合的$U(1)_X$规范扩展，我们在六个基准模型的参数空间中推导出新的排除界限。我们的分析表明，这些界限的严格性与各模型的理论轻子电荷分配直接相关。此外，通过隔离纯动力学混合和纯质量混合情形，我们提供了模型无关的界限。在亚MeV中介子质量区间，我们的结果显著改进了先前中微子-电子散射实验（如CHARM-II、TEXONO和GEMMA）的现有界限。最终，这些发现为低质量暗光子模型提供了改进的界限，展示了它们在全球暗门户搜索中与其他努力的互补性。
英文摘要
We study the phenomenological implications of anomaly-free dark photon models using low-energy solar neutrino-electron elastic scattering data from the ton-scale PandaX-4T and XENONnT experiments. Focusing on $U(1)_X$ gauge extensions that incorporate both kinetic and mass mixing, we derive novel exclusion limits across the parameter spaces of six benchmark models. Our analysis demonstrates that the stringency of these limits is directly correlated with the theoretical leptonic charge assignments of the respective models. Additionally, we provide model-independent limits by isolating the pure kinetic and pure mass mixing scenarios. In the sub-MeV mediator mass regime, our results meaningfully improve upon existing limits from previous neutrino-electron scattering experiments, such as CHARM-II, TEXONO, and GEMMA. Ultimately, these findings yield improved limits on low-mass dark photon models, demonstrating their complementarity with other ventures in the global search for dark portals.
Comments16 pages (two columns), 6 figures and 3 tables
