不同大型强子对撞机能量下 pp 对撞中 pions 的动态波动:利用因子相关器的深入分析

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Tumpa Biswas, Azharuddin Ahmed, Subhadeep Paul, Dibakar Dhar, Sanjib Kumar Manna, Mehedi Kalam, Dipak Ghosh, Prabir Kumar Haldar
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引用次数: 0

摘要

本文基于蒙特卡洛(MC)生成的PYTHIA(v8.3)、AMPT(v2.26)和UrQMD(v3.4)模型,对2.76-13 TeV不同质心(c.m)能量下pp对撞中的小离子之间的因子相关性和振荡倍率矩进行了分析。在这一研究过程中,我们发现了短程相关性的存在,我们的总体发现与(α)模型和(log)正态近似的预测相一致,这表明自相似动力学波动存在间歇性。从\(\sqrt{s}\)=\(2.76-13\) TeV开始,短程相关强度随着碰撞能量的增加而逐渐减小。通过对振荡倍率矩的分析,得出了每个MC生成模型与大型强子对撞机能量的比率\(H_q\)(因子矩\(K_q/F_q\)的累积)。非常有趣的是,PYTHIA和UrQMD的振荡与AMPT模型在\(\sqrt{s}\) = 13 TeV时的振荡有很大不同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dynamical fluctuations of pions in pp collisions at different LHC energies: an in-depth analysis with factorial correlator

Dynamical fluctuations of pions in pp collisions at different LHC energies: an in-depth analysis with factorial correlator

This paper presents an analysis on the basis of factorial correlators and oscillatory multiplicity moments among the pions extracted from Monte Carlo (MC) generated PYTHIA(v8.3), AMPT(v2.26) and UrQMD(v3.4) models in pp collisions at different center-of-mass (c.m) energies \(\sqrt{s}=\) 2.76 – 13 TeV. During this investigation, we have found the presence of short-range correlation and our overall findings are accordant with the predictions of the \(\alpha\)-model and \(\log\)-normal approximation which indicates the existence of intermittent nature of self-similar dynamical fluctuations. Short-range Correlation strength gradually decreases with the increase in collision energies from \(\sqrt{s}\) = \(2.76-13\) TeV is observed. From the analysis of oscillatory multiplicity moments, the ratios \(H_q\) (cumulant over factorial moments \(K_q/F_q\)) have been derived for each MC generated Model with LHC energies. It is extremely interesting to observe that the oscillations from PYTHIA and UrQMD are quite different from the AMPT model at \(\sqrt{s}\) = 13 TeV.

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来源期刊
Indian Journal of Physics
Indian Journal of Physics 物理-物理:综合
CiteScore
3.40
自引率
10.00%
发文量
275
审稿时长
3-8 weeks
期刊介绍: Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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