arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.09212nucl-th
收藏

$\sqrt{S_{NN}} = 2.76$ TeV上单弦结构和多弦相互作用对Pb+Pb碰撞奇异产生的影响

Impact of single string structure and multiple string interaction on strangeness production in Pb+Pb collisions at $\sqrt{S_{NN}} = 2.76$ TeV

Dai-Mei Zhou, Liang Zheng, Zhi-Hong Song, Yu-Liang Yan, Gang Chen, Xiao-Mei Li, Xu Cai, Ben-Hao Sa

摘要:

利用PACIAE模型对$\sqrt{S_{NN}} = 2.76$ TeV的Pb+Pb碰撞中奇异粒子和多奇异粒子的产生进行了系统的研究。两种不同的机制,即单弦结构变化和多弦相互作用,实现了模拟。这些修改导致了Lund弦碎裂框架中的弦张力值的增强,并在强子末态产生了更多的奇异粒子。将模拟结果与ALICE实验数据进行比较,结果表明,在PACIAE模型中引入可变的有效弦张力,能够改善Pb+Pb碰撞奇异产生的理论与实验的一致性.

英文摘要:

We present a systematic study on the strange and multi-strange particles production in Pb+Pb collisions at $\sqrt{S_{NN}} = 2.76$ TeV based on the PACIAE model simulations. Two different mechanisms, namely the single string structure variations and multiple string interactions, are implemented in the simulations. These modifications give rise to an enhancement of the string tension value involved in the Lund string fragmentation framework and generate more strange particles in the hadronic final state. By comparing the simulation results with the ALICE experimental data, it turns out that the inclusion of the variable effective string tension in the PACIAE model is capable to reach an improved agreement between theory and experiment on the strangeness production in Pb+Pb collisions.

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。

↑