相对论重离子对撞机和大型强子对撞机能量下重轻子对产生的中子标记
Neutron tagging of heavy lepton pair production at RHIC and LHC energies
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中文总结 AI 辅助
该研究计算超外围金和铅碰撞中\(\gamma\gamma \rightarrow \ell^+\ell^-\)产生的截面，在最低阶量子电动力学内用蒙特卡罗技术结合中子发射概率计算，通过泊松统计建模分类，实施相空间限制以与多实验结果比较。
中文摘要 AI 辅助
我们计算了超外围金和铅碰撞中\(\gamma\gamma \rightarrow \ell^+\ell^-\)（\(\ell = e,\mu,\tau\)）产生的截面，并将结果与质心能量\(\sqrt{s_{NN}} = 200\) GeV、\(\sqrt{s_{NN}} = 2.76\) TeV和\(\sqrt{s_{NN}} = 5.02\) TeV时STAR、ALICE、ATLAS和CMS实验的最新测量结果进行比较。计算在最低阶量子电动力学（LO QED）内进行，使用蒙特卡罗技术计算与碰撞参数相关的概率，随后与原子核库仑激发相关的中子发射概率相结合。这些中子发射情况用泊松统计建模，使截面可分为实验相关的中子类别：0n0n、0n1n、1n1n、0nXn、XnXn和包含（0n0n + 0nXn + XnXn）产生。为了与实验直接比较，实施了与每个探测器接受度相对应的基准相空间限制。
英文摘要
We calculated cross sections for $γγ\rightarrow \ell^+\ell^-$ ($\ell=e,μ,τ$) production in ultraperipheral gold and lead collisions and compare our results with recent measurements from the STAR, ALICE, ATLAS, and CMS experiments at center of mass energies $\sqrt{s_{NN}}=200$ GeV, $\sqrt{s_{NN}}=2.76 $ TeV, and $\sqrt{s_{NN}}=5.02$ TeV. The calculations are performed within lowest order quantum electrodynamics (LO QED) using a Monte Carlo technique for calculating the impact parameter dependent probability, and subsequently combined with neutron emission probabilities associated with Coulomb excitation of the nuclei. These neutron emission scenarios are modeled using a Poisson statistics, allowing the cross sections to be categorized into experimentally relevant neutron classes: 0n0n, 0n1n, 1n1n, 0nXn, XnXn, and inclusive (0n0n+0nXn+XnXn) production. To enable a direct comparison with experiments, fiducial phase space restrictions corresponding to the acceptance of each detector are implemented.
