发表机构
Baku State University; Institute of Physical Problems, Baku State University（巴库国立大学; 巴库国立大学物理问题研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文比较了NICA能量10 GeV质子-质子碰撞中瞬发光子产生的PYTHIA建模与FeynCalc计算，发现夸克-胶子康普顿散射主导贡献（51.27%），并解释了差异。
AI 中文摘要
本文研究了在NICA加速器综合体能量√s=10 GeV的质子-质子碰撞中瞬发光子产生的过程，该过程使用PYTHIA 8.316进行调制，并在FeynCalc中计算。主要关注三个主要子过程：夸克-胶子康普顿散射qg→qγ，夸克-反夸克对湮灭q\ar{q}→gγ，以及夸克轫致辐射qq→qqγ。确定了主要统计参数：产生的瞬发光子数关于光子能量、快度和光子对不变质量。产生的光子数按能量Eγ和快度的分布可以分别用对数正态分布和正态分布数学描述。分析表明，夸克-胶子康普顿散射qg→qγ对过程总截面起主导贡献，占51.27%，而夸克-反夸克对湮灭q\ar{q}→gγ和夸克轫致辐射qq→qqγ的贡献分别为47.22%和0.003%。解释了PYTHIA建模结果与FeynCalc计算结果之间的差异。使用诸如PYTHIA等现代建模工具不仅提高了实验预测的准确性，而且在粒子探测和数据分析新技术的开发中发挥关键作用。
英文摘要
The process of prompt photon production in proton-proton collisions at energies of $\sqrt{s}$=10 GeV at the NICA accelerator complex, modulated using PYTHIA 8.316 and calculated in FeynCalc. The main focus is on three main subprocesses: Compton scattering of a quark-gluon $qg \rightarrow qγ$, annihilation of a quark-antiquark pair $q\bar{q} \rightarrow gγ$ and bremsstrahlung of quarks $qq \rightarrow qqγ$. Main statistical parameters: number of produced prompt photon on photon energy, rapidity and invariant mass photon pairs are determined. The distribution of the number of produced photons by energy$ E_{γ} $ and rapidity photons can be mathematically described by the logarithmic-normal and normal law, correspondingly. The analysis shows that Compton scattering of a quark-gluon $qg \rightarrow qγ$ makes a dominant contribution to the total cross section of the process, accounting for 51.27\%, while the contributions of annihilation of quark-antiquark pair $q\bar{q} \rightarrow gγ$ and bremsstrahlung of quarks $qq \rightarrow qqγ$, correspondingly are is 47.22\% and 0.003\%. The difference between the results obtained from the PYTHIA modeling and those calculated by FeynCalc is explained. The use of modern modeling tools such as PYTHIA not only improves the accuracy of experimental predictions, but also plays a key role in the development of new technologies for particle detection and data analysis.
Comments40 pages, 33 figures
