Rapidity Distributions and Thermal Fits for Relativistic Heavy-Ion Collisions at 158A GeV

MA Guo-Liang; MA Yu-Gang; WANG Kun; SHEN Wen-Qing; CAI Xiang-Zhou; ZHANG Hu-Yong; LU Zhao-Hui; ZHONG Chen; CHEN Jin-Gen; WEI Yi-Bin; HUANG Huan-Zhong; SA Ben-Hao

Chinese Physics C> 2003, Vol. 27> Issue(10) : 901-904

Rapidity Distributions and Thermal Fits for Relativistic Heavy-Ion Collisions at 158A GeV

Shanghai Institute of Nuclear Research,CAS,Shanghai 201800,China2 Dept of Physics,University of California at Los Angeles,CA 90095,USA3 China Institute of Atomic Energy,Beijing 102413,China

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Abstract：
LUCIAE3 .0 model was used to simulate the relativistic heavy-ion collisions, namely C+C,Si+Si and Pb+Pb, which were already performed experimentally by NA49 collaboration. The simulated results of rapidity and transverse momentum distributions of all kinds of hadrons were compared with the NA49 data and found that they can fit the experimental data mostly. The kinetic temperature was deduced by the thermal fits to the transverse mass distributions of hadrons . It is found that the temperatures of light systems or hadrons fit the experimental data well, however, those of heavy systems or hadrons deviate much from the data, which probably because that LUCIAE3 .0 doesn' t include the information of QGP phase transition.

References

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Bass S A. arXiv: nucl–th/0202010 v2 2 Sorge H. Phys. Rev., 1995, C52: 32913 Werner K. arXiv: hep–ph/0009153 v1 4 Hohne C. for NA49 Collaboration arXiv: nucl–ex/0209018 v1 5 WANG Xin–Nian. arXiv: nucl–th/0105053 v1 6 TAI An, SA Ben–Hao. Comput. Phys. Commu., 1999, 116: 3557 HONG Pi, Z. Phys., 1993, C57: 4858 SA Ben–Hao, TAI An, LU Zhong–Dao. Phys. Rev., 1995, C52: 2069 9 SA Ben–Hao et al. Phys. Rev., 2002, C66: 044902 10 SA Ben–Hao, TAI An. Phys. Lett., 1997, B399: 29 11 Jones P G, the NA49 Collaboration. Nucl. Phys., 1996, A610: 188c12 Sorge H. Nucl. Phys., 1998, A630: 522c 13 Rischke D H et al. Nucl. Phys., 1995, A595: 346

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MA Guo-Liang, MA Yu-Gang, WANG Kun, SHEN Wen-Qing, CAI Xiang-Zhou, ZHANG Hu-Yong, LU Zhao-Hui, ZHONG Chen, CHEN Jin-Gen, WEI Yi-Bin, HUANG Huan-Zhong and SA Ben-Hao. Rapidity Distributions and Thermal Fits for Relativistic Heavy-Ion Collisions at 158A GeV[J]. Chinese Physics C, 2003, 27(10): 901-904.

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Received: 2003-01-21
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Rapidity Distributions and Thermal Fits for Relativistic Heavy-Ion Collisions at 158A GeV

Corresponding author: MA Guo-Liang,

Shanghai Institute of Nuclear Research,CAS,Shanghai 201800,China2 Dept of Physics,University of California at Los Angeles,CA 90095,USA3 China Institute of Atomic Energy,Beijing 102413,China

Received Date: 2003-01-21
Accepted Date: 1900-01-01
Available Online: 2003-10-05

Abstract: LUCIAE3 .0 model was used to simulate the relativistic heavy-ion collisions, namely C+C,Si+Si and Pb+Pb, which were already performed experimentally by NA49 collaboration. The simulated results of rapidity and transverse momentum distributions of all kinds of hadrons were compared with the NA49 data and found that they can fit the experimental data mostly. The kinetic temperature was deduced by the thermal fits to the transverse mass distributions of hadrons . It is found that the temperatures of light systems or hadrons fit the experimental data well, however, those of heavy systems or hadrons deviate much from the data, which probably because that LUCIAE3 .0 doesn' t include the information of QGP phase transition.