Abstract In this letter we propose the search of dark photons in the decay of pions produced by γγ interactions in ultraperipheral P b P b collisions. The cross section is estimated considering an accurate treatment for the absorptive corrections and for the nuclear form factor. Predictions for the event rates are presented considering the expected luminosities for the LHC, High – Luminosity LHC and High – Energy LHC as well as for the Future Circular Collider. Our results indicate that a future experimental analysis of the pion production in ultraperipheral heavy ion collisions can be useful to probe the dark photon production and constrain its properties.

中文翻译：

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来自超外围 PbPb 碰撞产生的π介子的暗光子

摘要 在这封信中，我们建议在超外围 P b P b 碰撞中由 γγ 相互作用产生的介子衰变中寻找暗光子。考虑对吸收校正和核形状因子的准确处理来估计横截面。考虑到 LHC、高光度 LHC 和高能量 LHC 以及未来圆形对撞机的预期光度，对事件率进行了预测。我们的结果表明，未来对超外周重离子碰撞中 pion 产生的实验分析可用于探测暗光子的产生并限制其性质。