arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0709.3174hep-ph
收藏

夸克-胶子弦模型中RHIC和LHC能区pp碰撞中秒态的中快度产生

Midrapidity Production of Secondaries in pp Collisions at RHIC and LHC Energies in the Quark-Gluon String Model

G. H. Arakelyan, C. Merino, C. Pajares, Yu. M. Shabelski

摘要:

我们考虑了重子是通过胶子弦结连接的三个夸克系统这一假设的唯象意义。详细讨论了弦结传播引起的重子数在快度空间的转移。在高能量下,这一过程导致了显着的影响,在hN碰撞中的重子的净生产在中等速度。在夸克-胶子弦模型的框架下,对不同秒数的中快度包含密度的数值计算结果与实验数据符合较好。奇异性抑制参数的一个通用值λ ~ 0.25正确地描述了Lambda/p、Xi/Lambda和Omega/Xi的产率比。最后给出了在LHC能区pp碰撞的预言。

英文摘要:

We consider the phenomenological implications of the assumption that baryons are systems of three quarks connected through gluon string junction. The transfer of baryon number in rapidity space due to the string junction propagation is considered in detail. At high energies this process leads to a significant effect on the net baryon production in hN collisions at mid-rapidities. The numerical results for midrapidity inclusive densities of different secondaries in the framework of the Quark-Gluon String Model are in reasonable agreement with the experimental data. One universal value lambda ~ 0.25 for the strangeness suppression parameter correctly describes the yield ratios of Lambda/p, Xi/Lambda, and Omega/Xi. The predictions for pp collisions at LHC energies are also presented.

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。

↑