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Rapidity dependence of hadron pT spectra in central Au+Au collisions at sNN～（1/2）=200 GeV

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【作者】 邵凤兰； 宋军； 谢去病；

【Author】 SHAO Feng-Lan1 SONG Jun2 XIE Qu-Bing2 1(Department of Physics,Qufu Normal University,Qufu 273165,China) 2(Department of Physics,Shandong University,Ji’nan 250100,China)

【机构】 Department of Physics,Qufu Normal University； Department of Physics,Shandong University；

【摘要】 The transverse momentum spectra for identified hadrons at different rapidities in central Au+Au collisions at sNN～（1/2）= 200 GeV are studied in a quark combination model.The results for pT spectra of π±,K±,p（p） and for the p/π ratios in a broader pT range at midrapidity agree well with the data.The transverse momentum spectra of pions,protons and antiprotons at various rapidities y ～ 1,η = 2.2 and y ≈ 3.2 are calculated and compared with the data.

【Abstract】 The transverse momentum spectra for identified hadrons at different rapidities in central Au+Au collisions atsNN～（1/2）= 200 GeV are studied in a quark combination model.The results for pT spectra of π±,K±,p（p） and for the p/π ratios in a broader pT range at midrapidity agree well with the data.The transverse momentum spectra of pions,protons and antiprotons at various rapidities y ～ 1,η = 2.2 and y ≈ 3.2 are calculated and compared with the data.

【关键词】 relativistic heavy ion collisions； hadronization； quark combination；
【Key words】 relativistic heavy ion collisions； hadronization； quark combination；
【基金】 Supported by National Natural Science Foundation of China (10775089,10475049);Science Fund of Qufu Normal University
  • 【文献出处】 中国物理C ,Chinese Physics C , 编辑部邮箱 ,2009年06期
  • 【分类号】O572.2
  • 【下载频次】18
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