发表机构
Institute of Nuclear Physics PAN; Universitá degli Studi di Ferrara; INFN Sezione di Ferrara; University of Rzeszów（波兰科学院核物理研究所; 费拉拉大学; 意大利国家核物理研究所费拉拉分部; 热舒夫大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究改进光子核模型和GiBUU生成器，预测LHC固定靶超外围碰撞中激发氩核光产生质子、中子、π介子和K介子的总及微分截面。
AI 中文摘要
重离子超外围碰撞以电磁相互作用为主导，使得人们能够研究激发核中重子和介子的光产生过程。在LHCb实验中，得益于SMOG2系统，这些研究也可以在固定靶碰撞中进行，利用从$^{4}$He到Xe的各种靶气体。在本工作中，我们改进了我们的光子核模型和Giesen-Boltzmann-Uehling-Uhlenbeck（GiBUU）生成器，以研究在LHC $^{208}$Pb束流固定靶超外围碰撞中，从激发的$^{40}$Ar核光产生质子、中子以及π介子和K介子的过程。我们给出了在全相空间以及LHCb探测器几何接收度内，总光产生截面和以$p$和$p_T$为变量的微分光产生截面的预测。
英文摘要
Ultraperipheral collisions of heavy ions, dominated by the electromagnetic interaction, allow to investigate the photoproduction of baryons and mesons from the excited nuclei. At LHCb, thanks to the SMOG2 system, these studies can also be conducted in fixed-target collisions, exploiting a variety of target gases ranging from $^{4}$He to Xe. In the present work, we adapted our photonuclear model and the Giesen-Boltzmann-Uehling-Uhlenbeck (GiBUU) generator to study photoproduction of protons, neutrons as well as pions and kaons from excited $^{40}$Ar nuclei in fixed-target ultraperipheral collisions with the LHC $^{208}$Pb beam. We present predictions for the total and differential photoproduction cross sections in $p$ and $p_T$, both in the full phase-space and within the geometrical acceptance of the LHCb detector.
Comments11 pages, 10 figures, 4 tables
