Tuning the Geant4 FTF Model Using Experimental Data of the NA61/SHINE Collaboration

IF 0.6 4区 物理与天体物理 Q4 PHYSICS, PARTICLES & FIELDS
A. Galoyan, V. Uzhinsky
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引用次数: 0

Abstract

The FTF model is an implementation of the well-known FRITIOF model of Lund University. It is used in the Geant4 package for simulations of hadron–nucleon, hadron–nucleus and nucleus–nucleus interactions at high energies. Thus, for various practical applications, it is important to have correct simulation results. This aim can be reached in a fine tuning of model parameters. In the presented paper, probabilities of strange meson production in quark and diquark fragmentations, and a probability of meson emission by diquarks are determined. A good description of the NA61/SHINE data on production of \({{\pi }^{ \pm }}\) mesons in \(pp\), \(p{\text{C}}\) and \(AA\) interactions has been achieved. However, there remains the problem of describing yields of strange mesons in nucleus–nucleus collisions. The model significantly underestimates yields of \({{K}^{ + }}\) and \({{K}^{ - }}\) mesons in \(^{{40}}{\text{Ar}} + \,{{\,}^{{45}}}{\text{Sc}}\) interactions.

Abstract Image

Abstract Image

利用 NA61/SHINE 合作组织的实验数据调整 Geant4 FTF 模型
摘要FTF模型是隆德大学著名的FRITIOF模型的实现。它被 Geant4 软件包用于模拟高能量下的强子-核子、强子-核子和核子-核子相互作用。因此,对于各种实际应用来说,获得正确的模拟结果非常重要。这一目标可以通过微调模型参数来实现。本文确定了奇异介子在夸克和二夸克碎片中产生的概率,以及介子被二夸克发射的概率。本文很好地描述了NA61/SHINE关于介子在(pp)、(p)和(AA)相互作用中产生的数据。然而,在描述核-核碰撞中奇异介子的产率方面仍然存在问题。该模型大大低估了(^{{40}}{text{Ar}} + \,{{\,}^{{45}}}{text{Sc}}\)相互作用中\({{K}^{ + }}\)和\({{K}^{ - }}\)介子的产率。
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来源期刊
Physics of Particles and Nuclei
Physics of Particles and Nuclei 物理-物理:粒子与场物理
CiteScore
1.00
自引率
0.00%
发文量
116
审稿时长
6-12 weeks
期刊介绍: The journal Fizika Elementarnykh Chastits i Atomnogo Yadr of the Joint Institute for Nuclear Research (JINR, Dubna) was founded by Academician N.N. Bogolyubov in August 1969. The Editors-in-chief of the journal were Academician N.N. Bogolyubov (1970–1992) and Academician A.M. Baldin (1992–2001). Its English translation, Physics of Particles and Nuclei, appears simultaneously with the original Russian-language edition. Published by leading physicists from the JINR member states, as well as by scientists from other countries, review articles in this journal examine problems of elementary particle physics, nuclear physics, condensed matter physics, experimental data processing, accelerators and related instrumentation ecology and radiology.
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