Hadronic interactions are crucial for the dynamical description of heavy-ion reactions at low collision energies and in the late dilute stages at high collision energies. In particular, the properties and decay channels of resonances are an essential ingredient of hadronic transport approaches. The HADES collaboration measured particle production in collisions of pions with carbon and tungsten nuclei at E _kin = 1.7GeV (Adamczewski-Musch etal 2019 Phys. Rev. Lett. 123 022002). Such reactions are of high interest, because they allow to probe the properties of baryonic resonances produced in a much cleaner environment than the usual nucleus–nucleus collisions. We study these reactions with two transport approaches: SMASH (simulating many accelerated strongly-interacting hadrons) and UrQMD (ultra relativistic quantum molecular dynamics) which follow the same underlying concept but with different implementations. The differential spectra in rapidity and transverse momentum are used to show how model parameters, as the decay channels of high mass resonances and angular distributions of kaon elastic scattering, can be constrained. It is found that the data favor the production of more particles with lower momentum over the production of few particles with higher momentum in these decays. In addition, the shape of the rapidity distribution of the kaons strongly depends on the angular distribution of the elastic kaon–nucleon cross section.

强子相互作用对于在低碰撞能量下以及在稀碰撞后期在高碰撞能量下重离子反应的动力学描述至关重要。特别地，共振的性质和衰减通道是强子运输方法的基本组成部分。所述HADES协作测得的颗粒的生产在用碳介子和钨的核的碰撞在Ë _亲属= 1.7GeV（Adamczewski-MUSCH等人2019和物理评论快报。 123022002）。这种反应引起了人们的极大兴趣，因为它们可以探测比通常的核-核碰撞更干净的环境中产生的重子共振的性质。我们用两种传输方法研究这些反应：SMASH（模拟许多加速的强相互作用强子）和UrQMD（超相对论量子分子动力学），它们遵循相同的基本概念，但实现方式不同。利用速度和横向动量中的微分谱来说明如何约束模型参数，因为高质量共振的衰减通道和kaon弹性散射的角分布。发现在这些衰减中，数据倾向于产生更多具有较低动量的粒子，而不是产生较少具有较高动量的粒子。此外，