Extraction of thermal temperature and radial flow from single-particle spectra and two-particle HBT correlations at RHIC energy

作者: LQ Shan , FJ Wu , JL Liu , QC Feng , GX Tang

DOI: 10.1088/0954-3899/36/5/055003

关键词: Monte Carlo methodPhysicsRadiusSpectral lineRapidityFlow velocityTransverse massPionTransverse planeNuclear physicsNuclear and High Energy Physics

摘要: Within a hydro-inspired blast-wave model, we combine the single-particle mt spectra of ?? and transverse mass dependence two-pion HBT radius Rs to extract thermal freeze-out temperature T surface radial flow rapidity ?0 for six centrality classes in Au+Au collisions at GeV measured by STAR Collaboration RHIC. The obtained are consistent with those simultaneous fits ??, K?, p except peripheral collisions. data can be well described assumption that same profile is relatively good central mid-central Furthermore, simulate emitting source Monte Carlo method use program CRAB get kaon Rs. 1? chi-square contours spectrum have wide overlap region T??0 plane, which leads large errors when both observables its velocity.

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