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Transport model analysis of the pion interferometry in Au+Au collisions at Ebeam=1.23 GeV/nucleon

Transport model analysis of the pion interferometry in Au+Au collisions at Ebeam=1.23 GeV/nucleon

作     者:Pengcheng Li Yongjia Wang Qingfeng Li Hongfei Zhang 

作者机构:School of ScienceHuzhou UniversityHuzhou 313000China School of Nuclear Scienceand TechnologyLanzhou UniversityLanzhou730oooChina Institut für Theoretische PhysikGoethe Universitat FrankfurtFrankfurt am Main 60438Germany Institute of Modern PhysicsChinese Academyof SciencesLanzhou730000China School of PhysicsXi'an JiaotongUniversityXi'an710049China 

出 版 物:《Science China(Physics,Mechanics & Astronomy)》 (中国科学:物理学、力学、天文学(英文版))

年 卷 期:2023年第66卷第2期

页      面:51-58页

核心收录:

学科分类:08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基  金:supported by the National Natural Science Foundation of China(Grant Nos.11875125,12075085,U2032145,12175170,and12147219) the National Key Research and Development Program of China(Grant No.2020YFE0202002) the financial support from China Scholarship Council(Grant No.202106180053) 

主  题:interferometry beam relativistic 

摘      要:Within the framework of the Ultra-relativistic Quantum Molecular Dynamics model,the effects of resonance decay widths,inmedium nucleon-nucleon(in)elastic cross sections,and potentials on the pion Hanbury-Brown-Twiss(HBT)intensity interferometry in central Au+Au collisions at Ebeam=1.23 GeV/nucleon are *** results show that the pion emission source is visibly influenced by theΔparticles with small invariant masses,i.e.,with long resonance ***,the pion HBT radii are found to be insensitive to the nucleon-nucleon(in)elastic cross sections,while the measured rapidity distributions of the charged pions are sensitive to the nucleon-nucleon(in)elastic cross sections and can be much better reproduced by considering a reduction factor on the nucleon-nucleon inelastic cross *** observed charge-sign difference of the source radii,especially in outward and sideward directions,can be qualitatively explained by simulations with the potential contributions,especially including the Coulomb potential of *** present work demonstrates that the potential updates play important roles in describing the measured HBT radii and duration-time-related radii ratios when understanding the dynamics in relativistic heavy-ion collisions at~GeV beam energies.

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