A Comparison of Different Measures for Dynamical Event Mean Transverse Momentum Fluctuation
LIU Lian-Shou1 , FU Jing-Hua2
1 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
2 Engineering Physics Department, Tsinghua University, Beijing 100084
A Comparison of Different Measures for Dynamical Event Mean Transverse Momentum Fluctuation
LIU Lian-Shou1 ;FU Jing-Hua2
1 Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
2 Engineering Physics Department, Tsinghua University, Beijing 100084
关键词 ：
13.85.Hd ,
25.75.-q ,
24.60.Ky
Abstract ： Various measures for the dynamical event mean transverse momentum fluctuation are compared with the real dynamical fluctuation using a Monte Carlo model. The variance calculated from the G-moments can reproduce the dynamical variance well, while those obtained by subtraction procedures are approximate measures for not very low multiplicity. Фpt , proposed by Gazdzicki M and Mrowczynski S [Z.Phys.C 54(1992)127], can also serve as an approximate measure after being divided by the square root of mean multiplicity.
Key words ：
13.85.Hd
25.75.-q
24.60.Ky
出版日期: 2004-08-01
:
13.85.Hd
(Inelastic scattering: many-particle final states)
25.75.-q
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
24.60.Ky
(Fluctuation phenomena)
引用本文:
LIU Lian-Shou;FU Jing-Hua. A Comparison of Different Measures for Dynamical Event Mean Transverse Momentum Fluctuation[J]. 中国物理快报, 2004, 21(8): 1467-1470.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2004/V21/I8/1467
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2004, Vol. 21 
