发表机构
Nankai University; Xi'an University of Architecture and Technology（南开大学; 西安建筑科技大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究探索利用实验室激光实验与磁星强电磁场，通过非线性康普顿散射、施温格机制等方法，搜索约束轻微荷粒子，发现二者的约束与搜索潜力互补。
AI 中文摘要
对标准模型（SM）之外的轻暗粒子在强场环境下的探测已引起广泛关注。本研究探讨了通过实验室激光实验与磁星等天体物理环境中的强电磁场，搜索和约束轻微荷粒子（MCPs）的潜力。我们提出了相对论电子束与高强度激光脉冲相互作用产生非线性康普顿散射过程中的MCP对产生机制，采用Furry表象与背景电磁场下狄拉克方程的Volkov解描述外经典激光场中的电子与MCPs。我们计算了非线性康普顿散射产生MCP对的截面，并考虑了含失踪中微子的不可约SM本底。我们还基于Ruderman-Sutherland模型，重新研究了磁星极区中超强磁场与平行电场作用下通过施温格机制产生的MCP对，针对已确认的磁星，评估了MCP对产生导致的能量损失及电场加速效应。我们发现，强磁化磁星的约束与实验室激光实验的搜索潜力具有互补性。
英文摘要
The probe of light dark particles beyond the Standard Model (SM) under a strong-field environment has drawn significant attention. In this work, we investigate the potential to search for and constrain light millicharged particles (MCPs) via strong electromagnetic fields in both laboratory laser experiments and astrophysical environments such as magnetars. We propose the MCP pair production from nonlinear Compton scattering through the interaction of a relativistic electron beam with a high-intensity laser pulse. The Furry picture and Volkov solution of Dirac equation in a background electromagnetic field are used to describe the electrons and MCPs under an external classical laser field. We calculate the cross sections of nonlinear Compton scattering to MCP pairs and take into account the irreducible SM background with missing neutrinos. We also revisit the MCP pair production via the Schwinger mechanism from magnetars with ultra-strong magnetic field and parallel electric field in polar gap. The energy loss due to the Schwinger pair production of MCPs and electric field acceleration is evaluated based on Ruderman-Sutherland model for confirmed magnetars. We find that the constraints from highly magnetized magnetars and the search potential in laboratory laser experiments are complementary.
Comments23 pages, 3 figures, 2 tables
