AI 中文总结
该研究计算轻子对撞中两过程的量子可观测量，发现次领头阶电弱修正会改变末态量子结构，证明相关可观测量可作为电弱动力学的高精度探针用于新物理搜寻。
AI 中文摘要
我们研究虚次领头阶（NLO）电弱修正如何影响轻子-轻子碰撞中纠缠和 magic（魔性）的量子可观测量。将出射粒子视为多量子系统，即自旋为1/2的费米子对应量子比特，大质量矢量玻色子对应量子三态，我们在单圈精度下计算了过程ℓ⁺ℓ⁻→τ⁻τ⁺、ZZ的纠缠熵和稳定子二阶Rényi熵。结果表明，辐射修正会相干地修改末态的量子结构，改变最大纠缠区域的位置并相对于领头阶改变生成的魔性。我们的结果证明，这些量子可观测量为未来轻子对撞机上的电弱动力学提供了新颖、对精度敏感的探针，并为其在新物理搜寻中的应用开辟了道路。
英文摘要
We study how virtual next-to-leading-order electroweak corrections affect the quantum observables of entanglement and magic in lepton--lepton collisions. Treating the outgoing particles as multi-qudit systems, $\textit{i.e.}$, qubits for spin-$\tfrac{1}{2}$ fermions and qutrits for massive vector bosons, we compute entanglement entropy and the stabilizer second Rényi entropy for the processes $\ell^+\ell^- \to τ^-τ^+,\, ZZ$ at one-loop accuracy. We show that radiative corrections coherently modify the quantum structure of the final state, shifting regions of maximal entanglement and altering the generated magic relative to leading order. Our results demonstrate that these quantum observables provide novel, precision-sensitive probes of electroweak dynamics at future lepton colliders and open a path toward their use in searches for new physics.
Comments46 pages
