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arXiv 0810.0017nucl-exhep-ex
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RHIC上奇异粒子的产生

Strange Particle Production at RHIC

Anthony R. Timmins

摘要:

我们报告STAR测量的中快度产额的$Λ$,$\barΛ$,$K^{0}_{S}$,$Ξ^{-}$,$\barΞ^{+}$,$Ω^{-}$和$\barΩ^{+}$粒子在Cu+Cu和Au+Au $\sqrt{s_{NN}} = 200$ GeV碰撞。我们发现,在一个给定的参与核子数,批量奇异生产是更高的Cu+Cu碰撞相比,Au+Au碰撞在相同的质量中心的能量,从正则形式主义的预测。我们比较了铜+铜和金+金产量AMPT和EPOS的预测,并发现他们重现关键的定性方面的数据。最后,我们研究了其他的标度参数,并发现大量的奇异生产的测量数据和理论预测,规模更好的参与者,经历一个以上的碰撞的数量。

英文摘要:

We report STAR measurements of mid-rapidity yields for the $Λ$, $\barΛ$, $K^{0}_{S}$, $Ξ^{-}$, $\barΞ^{+}$, $Ω^{-}$, and $\barΩ^{+}$ particles in Cu+Cu and Au+Au $\sqrt{s_{NN}} = 200$ GeV collisions. We show that at a given number of participating nucleons, bulk strangeness production is higher in Cu+Cu collisions compared to Au+Au collisions at the same center of mass energy, counter to predictions from the Canonical formalism. We compare both the Cu+Cu and Au+Au yields to AMPT and EPOS predictions, and find they reproduce key qualitative aspects of the data. Finally, we investigate other scaling parameters and find bulk strangeness production for both the measured data and theoretical predictions, scales better with the number participants that undergo more than one collision.

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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