Extracting temperature and transverse flow by fitting transverse mass spectra and HBT radii together
作者： Ronghua He , Jing Qian , Jianyi Chen , Qingxin Wu , Lei Huo
DOI: 10.1142/S0217732317500523
关键词: Thermal equilibrium 、 Energy (signal processing) 、 Transverse mass 、 Physics 、 Transverse plane 、 Particle physics 、 Rapidity 、 Monte Carlo method 、 Radius 、 Pion
摘要: Single particle transverse mass spectra and HBT radii of identical pion kaon are analyzed with a blast-wave parametrization under the assumptions local thermal equilibrium expansion. Under assumptions, temperature parameter $T$ expansion rapidity $\rho$ sensitive to shapes $m_\text T$ spectrum radius $R_\text{s}(K_\text T)$. Negative positive correlations between observed by fitting $m_\text{T}$ $R_\text s (K_\text T)$, respectively. For Monte Carlo simulation using function, extracted $m_T$ together utilizing combined optimization function $\chi^2$. With this method, sources can be extracted. Using method for A Multi-Phase Transport model (AMPT) at RHIC energy, differences obviously, tendencies vs collision energy $\sqrt{s_\text{NN}}$ similar results directly from AMPT model.
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