Dependence of Entropy Index on the Width and Shape of Multiplicity Distributions

ZHANG Hui-Lan; LIU Lian-Shou

Chinese Physics C> 2003, Vol. 27> Issue(9) : 803-807

Dependence of Entropy Index on the Width and Shape of Multiplicity Distributions

ZHANG Hui-Lan ,
LIU Lian-Shou ^,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China

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Abstract：
The dependence of entropy index μ 2 on the width and shape of multiplicity distributions are studied in detail by using Monte Carlo method and comparing with the results from NA22 experiment.It is found that the entropy index is insensitive to the shape of multiplicity distribution but decreases with the increase of the distribution width.The latter observation contradicts the usually expected role of the index,indicating that μ_q is not an appropriate parameter for measuring event-by-event fluctuation.

References

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ZHANG Hui-Lan and LIU Lian-Shou. Dependence of Entropy Index on the Width and Shape of Multiplicity Distributions[J]. Chinese Physics C, 2003, 27(9): 803-807.

ZHANG Hui-Lan and LIU Lian-Shou. Dependence of Entropy Index on the Width and Shape of Multiplicity Distributions[J]. Chinese Physics C, 2003, 27(9): 803-807. shu

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Received: 2003-01-23
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

Dependence of Entropy Index on the Width and Shape of Multiplicity Distributions

ZHANG Hui-Lan
LIU Lian-Shou ^,

Corresponding author: LIU Lian-Shou,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430079,China

Received Date: 2003-01-23
Accepted Date: 1900-01-01
Available Online: 2003-09-05

Abstract: The dependence of entropy index μ 2 on the width and shape of multiplicity distributions are studied in detail by using Monte Carlo method and comparing with the results from NA22 experiment.It is found that the entropy index is insensitive to the shape of multiplicity distribution but decreases with the increase of the distribution width.The latter observation contradicts the usually expected role of the index,indicating that μ_q is not an appropriate parameter for measuring event-by-event fluctuation.