Rapidity Losses in Heavy-Ion Collisions from AGS to RHIC Energies

Rapidity Losses in Heavy-Ion Collisions from AGS to RHIC Energies
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从 AGS 能量到 RHIC 能量的重离子碰撞中的快速损失

DOI:
10.1088/0256-307x/27/5/052503
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发表时间:
2009-09
影响因子:
3.5
通讯作者:
Zhou Dai-Cui
Zhou Dai-Cui
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhou Feng-Chu;Yin Zhong-Bao;Zhou Dai-Cui

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研究了从AGS到RHIC能区的中心重离子碰撞中的快度损失。通过唯象地从实验净重子测量中去除靶在前向快度区的贡献,并考虑抛射体在后向快度区的贡献,得到了抛射体在全快度区的净重子分布。基于全射弹净重子分布的计算表明,从SPS顶能到RHIC能,快度损失不再增加,表明重子输运在高能时对能量没有很强的依赖性.
We study the rapidity losses in central heavy-ion collisions from AGS to RHIC energies with the mean rapidity determined from the projectile net-baryon distribution after collisions. The projectile net-baryon distribution in the full rapidity range is obtained by phenomenologically removing the target contribution at the forward rapidity region from the experimental net-baryon measurements and taking into account the projectile contribution in the backward rapidity region. Based on the full projectile net-baryon distributions, calculations show that the rapidity loss stops increasing from the SPS top energy to RHIC energies, indicating that baryon transport does not depend strongly on energy at high energies.
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