An explanation for deviations from the quark number scaling of elliptic flows in low p<SUB>T</SUB> region

YAO Tao; XIE Qu-Bing; SHAO Feng-Lan

doi:10.1088/1674-1137/32/5/006

Chinese Physics C> 2008, Vol. 32> Issue(5) : 356-362 DOI: 10.1088/1674-1137/32/5/006

An explanation for deviations from the quark number scaling of elliptic flows in low p_T region

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Abstract：
We carry out a systematic study of the different contributions to the deviations of the elliptic flows from the quark number scaling in high energy heavy ion collision in a quark combination model. The effects that we considered are: the resonance decay, the flavor dependence of the quark elliptic flow and the combination of quarks/antiquarks with slightly different transverse momenta. Our results show that the deviations observed in experiments can be well reproduced within the combination framework if all the three effects are considered. We make a detailed analysis of the different contributions using a Monte-Carlo program and suggest measuring the quark number scaling in intermediate p_T range more precisely.

References

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YAO Tao, XIE Qu-Bing and SHAO Feng-Lan. An explanation for deviations from the quark number scaling of elliptic flows in low p_T region[J]. Chinese Physics C, 2008, 32(5): 356-362. doi: 10.1088/1674-1137/32/5/006

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Received: 2007-08-07
Revised: 2007-09-26

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

An explanation for deviations from the quark number scaling of elliptic flows in low p_T region

Corresponding author: YAO Tao,

Received Date: 2007-08-07

Accepted Date: 2007-09-26

Available Online: 2008-05-05

Abstract:

We carry out a systematic study of the different contributions to the deviations of the elliptic flows from the quark number scaling in high energy heavy ion collision in a quark combination model. The effects that we considered are: the resonance decay, the flavor dependence of the quark elliptic flow and the combination of quarks/antiquarks with slightly different transverse momenta. Our results show that the deviations observed in experiments can be well reproduced within the combination framework if all the three effects are considered. We make a detailed analysis of the different contributions using a Monte-Carlo program and suggest measuring the quark number scaling in intermediate p_T range more precisely.

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An explanation for deviations from the quark number scaling of elliptic flows in low p_T region

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An explanation for deviations from the quark number scaling of elliptic flows in low p_T region

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An explanation for deviations from the quark number scaling of elliptic flows in low pT region

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An explanation for deviations from the quark number scaling of elliptic flows in low p_T region

An explanation for deviations from the quark number scaling of elliptic flows in low p_T region