标题： 超核产生的相对论输运模型中的反质子捕获 显示英文标题

标题： Production of hypernuclei from antiproton capture within a relativistic transport model

摘要： 报告了在各种靶核上被捕获的反质子在模拟的周边湮灭过程中单个超核$\Lambda$的生产产额。 初始湮灭过程和激发态超核的产生是在GiBUU输运框架内估算的，而它们的退激过程则用ABLA++代码处理。 激发态超核的产额范围从对 $^{16}$O 的 $\sim$ 0.3% 到对 $^{132}$Xe 的 $\sim$ 1.2% 每次湮灭，这与CERN LEAR上的先前测量结果一致。 退激后特定基态超核的产额每湮灭可达到几个 10$^{-4}$。 超核是在目标核子与起源于反质子停止湮没的 kaon 之间发生的奇异交换反应中产生的，在所属的 $\sim$ 80% 的情况下，而次级π介子-核子碰撞中的奇异粒子对产生则贡献了剩余的 $\sim$ 20%。 模拟结果表明，停止的反质子在不同核子上的湮没可以填充大量迄今为止尚未被探索的超核。 显示英文摘要

摘要： Production yields of single-$\Lambda$ hypernuclei from simulated peripheral annihilations of antiprotons after capture on various target nuclei are reported. The initial annihilation process and the production of excited hypernuclei are estimated within the GiBUU transport framework, while their deexcitation process is treated with the ABLA++ code. The yield of excited hypernuclei range from $\sim$ 0.3% for $^{16}$O to $\sim$ 1.2% for $^{132}$Xe per annihilation, consistent with previous measurements at LEAR, CERN. The yield of specific ground state hypernuclei after deexcitation reaches up to a few 10$^{-4}$ per annihilation. The hypernuclei are produced in strangeness exchange reactions occuring between a nucleon of the target and the kaons originating from the annihilation in $\sim$ 80% of the cases, while the strangeness pair production in secondary pion-nucleon collision contributes to the remaining $\sim$ 20%. The simulations indicate that antiproton annihilations at rest on different nuclei could populate a wide range of so-far unexplored hypernuclei.