arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2405.04569hep-phhep-thnucl-th
收藏

QCD拓扑展开中的重子数–味分离

Baryon-number -flavor separation in the topological expansion of QCD

David Frenklakh, Dmitri Kharzeev, Giancarlo Rossi, Gabriele Veneziano

AI总结:

本文用适配QCD拓扑展开的Feynman–Wilson类比气体模型解释高能过程中的重子数–味分离,并由对偶性预言近截距1/2的相反C宇称结–反结胶球轨迹,结果与STAR和ALICE数据吻合。

摘要:

QCD的规范不变性决定了重子波函数中存在弦结。在高能单举过程中,这些重子结已被预言会引发重子数流与味流的分离。本文利用Feynman和Wilson很久以前提出、并在此加以调整以容纳QCD拓扑展开的多粒子产生类比气体模型来描述这一现象。在该框架中,对偶性论证表明存在两条简并的结–反结胶球Regge轨迹,它们具有相反的$\cal{C}$宇称,且截距接近1/2。关于重子阻止的能量和快度依赖性的相应结果,与STAR和ALICE实验近期的实验发现合理吻合。我们表明,考虑碎裂弦之间的关联会进一步改善与数据的一致性,并概述了在现有(RHIC、LHC、JLab)和未来(EIC)装置上对我们图像进行的额外实验检验。

英文摘要:

Gauge invariance of QCD dictates the presence of string junctions in the wave functions of baryons. In high-energy inclusive processes, these baryon junctions have been predicted to induce the separation of the flows of baryon number and flavor. In this paper we describe this phenomenon using the analog-gas model of multiparticle production proposed long time ago by Feynman and Wilson and adapted here to accommodate the topological expansion in QCD. In this framework, duality arguments suggest the existence of two degenerate junction-antijunction glueball Regge trajectories of opposite $\cal{C}$-parity with intercept close to 1/2. The corresponding results for the energy and rapidity dependence of baryon stopping are in reasonably good agreement with recent experimental findings from STAR and ALICE experiments. We show that accounting for correlations between the fragmenting strings further improves agreement with the data, and outline additional experimental tests of our picture at the existing (RHIC, LHC, JLab) and future (EIC) facilities.

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。

↑