Nuclear matter at a HIRFL-CSR energy regime
We report some recent progress in constraining the symmetry energy Esym (p) at high densities using high-energy heavy-ion collisions. Circumstantial evidence of a soft Esym(p) at supra-saturation density is obtained by comparing the pion ratio n~/n+ measured recently with FOPI at GSI and the 1BUU04 model calculations. Detailed studies indicate that the power of determining the Esym(p) from π-/π+ is enhanced with decreasing the beam energy to near the pion production threshold, showing a correlation to the increasing nuclear stopping. Among several heavy-ion reaction facilities in the world, the cooling storage ring (HIRFL-CSR), newly commissioned at Lanzhou, delivering heavy-ion beams up to 1 A GeV, to be coupled with advanced detectors will contribute significantly to further studies of the equation of state of asymmetric nuclear matter.
Zhigang Xiao Lie-Wen Chen Fen Fu Bao-An Li Genming Jin Hushan Xu Gaochan Yong Ming Zhang
Department of Physics, Tsinghua University, Beijing 100084, Peoples Republic of China Institute of Theoretical Physics, Shanghai Jiaotong University, Shanghai 200240, Peoples Republic o Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Peoples Republic of China Department of Physics, Texas A & M University-Commerce, Commerce, TX 75429-3011, USA
国际会议
SQM2008：International Conference on Strangeness in Quark Matter(2008奇异夸克物质国际会议)
北京
英文
1-8
2008-10-06（万方平台首次上网日期，不代表论文的发表时间）