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A new variable in flow analysis

Q. H. Zhang·L. Huo·W. N. Zhang
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Abstract

We have used a simple spectrum distribution which was derived from a hydrodynamical equation\cite{Csorgo} to fit the data of the STAR group. It is found that it can fit the $v_2$ of STAR group very well. We have found that $v_2$ is sensitive to both the effective temperature of particles and the expanding velocity. We have suggested a new variable ${\bf z}$ to be used in the flow analysis. This new variable will measure the correlation of particles momentum components. We have also shown that one of the $x$ or $y$ direction in the reaction plane is the direction which has the largest variance.

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Q. H. Zhang, L. Huo, W. N. Zhang. 2006-06-20. A new variable in flow analysis. https://arxiv.org/abs/nucl-th/0606038

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