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arXiv 0909.5046nucl-ex
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从AGS到RHIC能重离子碰撞中的快度损失

Rapidity losses in heavy-ion collisions from AGS to RHIC energies

F. C. Zhou, Z. B. Yin, D. C. Zhou

摘要:

研究了从AGS到RHIC能区的中心重离子碰撞中的快度损失,平均快度由碰撞后的净重子分布确定。从实验净重子测量中唯象地去除靶在前向快度区的贡献,并考虑射弹在后向快度区的贡献,得到了全快度区的射弹净重子分布.基于全射弹重子净分布的计算结果表明,从SPS顶能到RHIC能,重子输运的快度损失不再增加,表明重子输运在高能时对能量的依赖性不强.

英文摘要:

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 was obtained by removing the target contribution phenomenologically at forward rapidity region from the experimental net-baryon measurements and taking into account the projectile contribution at backward rapidity region. Based on the full projectile net-baryon distributions, calculation results 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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