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arXiv 0804.4363nucl-ex
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RHIC产生$ϕ$介子的系统尺寸和能量依赖性

System size and energy dependence of $ϕ$ meson production at RHIC

J. H. Chen

摘要:

利用RHIC STAR实验测量了在$\sqrt{s_{NN}}$ =62.4 GeV和200 GeV的Cu+Cu和Au+Au碰撞中$ϕ$介子产生的系统尺寸和能量依赖关系.发现重离子碰撞中参与者标度$ϕ$介子产额比p+p碰撞中的参与者标度介子产额多,且随碰撞能量的增加而增加.并与开奇异粒子的结果进行了比较,讨论了其物理意义。

英文摘要:

We present a system size and energy dependence of $ϕ$ meson production in Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}$=62.4 GeV and 200 GeV measured by the STAR experiment at RHIC. We find that the number of participant scaled $ϕ$ meson yields in heavy ion collisions over that of p+p collisions are larger than 1 and increase with collision energy. We compare the results with those of open-strange particles and discuss the physics implication.

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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