Study the early stage of heavy ion collisions with direct photons
Study the early stage of heavy ion collisions with direct photons
复制标题
研究重离子与直接光子碰撞的早期阶段
DOI:
10.1142/s2010194514602300
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发表时间:
2012-12
期刊:
影响因子:
--
通讯作者:
刘复明,刘升旭
中科院分区:
文献类型:
--
作者:
刘复明,刘升旭
Based on the modelling of the collective motion in AuAu collisions at at centrality 0-20% and 20-40% and PbPb collisions at at centrality 0-40% with a 3+1D event-averaged ideal hydrodynamics constrained with hadronic data, we study the transverse momentum spectrum and elliptic flow of direct photons and find that the recent direct photon data from both PHENIX collaboration at RHIC and ALICE collaboration at LHC favour an early beginning of collective expansion (τ0 < 0.6 fm/c) and a late formation of quark gluon plasma (τ ~ 2 fm/c).
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