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A Comparison of Different Measures for Dynamical Event Mean Transverse Momentum Fluctuation |
| LIU Lian-Shou1;FU Jing-Hua2 |
| 1Institute of Particle Physics, Huazhong Normal University, Wuhan 430079
2Engineering Physics Department, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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LIU Lian-Shou, FU Jing-Hua 2004 Chin. Phys. Lett. 21 1467-1470 |
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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.
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| Keywords:
13.85.Hd
25.75.-q
24.60.Ky
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Published: 01 August 2004
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| PACS: |
13.85.Hd
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(Inelastic scattering: many-particle final states)
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25.75.-q
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(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))
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24.60.Ky
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(Fluctuation phenomena)
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