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arXiv 2205.04429hep-ph
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LHC能区多粒子产生中从软过程到硬过程转变的不同复杂度

Different degrees of complexity in multiparticle production at the LHC energies with the transition from soft to hard processes

Hirak Koley, Arindam Mondal, Somnath Kar, Sreejita Mukherjee, Joyati Mondal, Argha Deb, Mitali Mondal

AI总结:

本文利用可视图复杂网络方法分析LHC能区pp和p-A碰撞中多粒子产生的复杂度与分形性质,首次揭示分形行为随粒子产生过程由软变硬的变化规律,并发现复杂度依赖于过程硬度,同时表现出系统尺寸和能量依赖性。

摘要:

我们应用基于复杂网络的可视图方法,探究LHC能区多粒子产生过程中的复杂度与分形性质。研究中使用了质子-质子(pp)碰撞事件(质心能量$\sqrt{s}$=7和13 TeV)以及质子-核(p-A)碰撞事件(核子-核子质心能量$\sqrt{s_{\rm NN}}$=5.02 TeV),这些事件由包含流体动力学演化的混合蒙特卡罗模型EPOS3生成。高能碰撞中的粒子产生随着产生的粒子横动量增加而逐渐变硬。我们首次详细分析了上述碰撞系统中,随着过程相对软过程逐渐变硬时分形行为的变化。研究表明,复杂度取决于粒子产生过程的硬度。当前分析还展示了分形性质的系统尺寸依赖性以及能量依赖性。

英文摘要:

We apply a complex network-based method of visibility graph to explore the degree of complexity and fractal nature in the multiparticle production process at the LHC energy regime. For the investigation, we have used proton-proton (pp) collision events at $\sqrt{s}$ = 7 and 13 TeV and proton-nucleus (p-A) collision events at $\sqrt{s_{\rm NN}}$ = 5.02 TeV, generated using a hybrid Monte-Carlo model, EPOS3 with hydrodynamical evolution. Particle production in high energy collisions becomes gradually harder with the increase of the produced particle's transverse momentum. We have presented for the first time a detailed analysis of the change of fractal behaviour as the process becomes gradually harder than the soft ones for the above mentioned colliding systems. The study reveals that the degree of complexity depends on the hardness of the particle production process. System size dependency, as well as energy dependency of fractal nature, are also exhibited by the present analysis.

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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