Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio

YONG Gao-Chan; CHEN Lie-Wen; LI Bao-An; ZUO Wei

Chinese Physics C> 2006, Vol. 30> Issue(7) : 642-645

Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio

Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China2 Graduate University of Chinese Academy of Science, Beijing 100049, China3 Institute of Theoretical Physics, Shanghai Jiaotong University, Shanghai 200240, China4 Department of Chemistry and Physics, P.O.Box 419, Arkansas State University, State University, Arkansas 72467-0419, USA

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Based on a transport model IBUU04, the double n/p ratio is studied. It is found that the double n/p ratio has almost the same sensitivity to the density dependence of nuclear symmetry energy as the single n/p ratio does. Because the double n/p ratio of nucleon emissions taken from two reaction systems can reduce systemic errors effectively, it is thus more useful for constraining the density-dependent symmetry energy further.

References

[1]

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YONG Gao-Chan, CHEN Lie-Wen, LI Bao-An and ZUO Wei. Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio[J]. Chinese Physics C, 2006, 30(7): 642-645.

YONG Gao-Chan, CHEN Lie-Wen, LI Bao-An and ZUO Wei. Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio[J]. Chinese Physics C, 2006, 30(7): 642-645. shu

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Received: 2005-10-22
Revised: 2006-02-15

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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

Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio

Corresponding author: YONG Gao-Chan,

Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, China2 Graduate University of Chinese Academy of Science, Beijing 100049, China3 Institute of Theoretical Physics, Shanghai Jiaotong University, Shanghai 200240, China4 Department of Chemistry and Physics, P.O.Box 419, Arkansas State University, State University, Arkansas 72467-0419, USA

Received Date: 2005-10-22

Accepted Date: 2006-02-15

Available Online: 2006-07-05

Abstract: Based on a transport model IBUU04, the double n/p ratio is studied. It is found that the double n/p ratio has almost the same sensitivity to the density dependence of nuclear symmetry energy as the single n/p ratio does. Because the double n/p ratio of nucleon emissions taken from two reaction systems can reduce systemic errors effectively, it is thus more useful for constraining the density-dependent symmetry energy further.

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Pinning down the Density-Dependent Symmetry Energy by Using Double n/p Ratio

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