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arXiv 1606.06642nucl-thhep-phnucl-ex
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重离子碰撞中强子输运新方法的粒子产生和平衡性质

Particle production and equilibrium properties within a new hadron transport approach for heavy-ion collisions

J. Weil, V. Steinberg, J. Staudenmaier, L. G. Pang, D. Oliinychenko, J. Mohs, M. Kretz, T. Kehrenberg, A. Goldschmidt, B. Bäuchle, J. Auvinen, M. Attems, H. Petersen

摘要:

强子输运方法实现了低束流能量下重离子反应的微观描述。本文介绍了一种新的方法SMASH(Simulating Many Accelerated Strong-Interacting Hadrons),并将其应用于研究$E_{\rm kin}=0.4-2A$ GeV重离子反应中非奇异粒子的产生。首先,该模型进行了描述,包括碰撞准则,初始条件和共振的形成和衰减的细节。为了验证该方法,平衡特性,如细致平衡,并将结果与实验数据进行比较的基本截面。最后用HADES和FOPI数据对C+C和Au+Au碰撞中π介子和质子的产生进行了比较。对$π+A$碰撞中的粒子产生进行了预测。

英文摘要:

The microscopic description of heavy-ion reactions at low beam energies is achieved within hadronic transport approaches. In this article a new approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced and applied to study the production of non-strange particles in heavy-ion reactions at $E_{\rm kin}=0.4-2A$ GeV. First, the model is described including details about the collision criterion, the initial conditions and the resonance formation and decays. To validate the approach, equilibrium properties such as detailed balance are presented and the results are compared to experimental data for elementary cross sections. Finally results for pion and proton production in C+C and Au+Au collisions is confronted with HADES and FOPI data. Predictions for particle production in $π+A$ collisions are made.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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