---
格式版本: 2
标题: "Evolution of the underlying event and non-extensive thermodynamics in pp collisions from RHIC to LHC energies"
原文链接: "https://arxiv.org/abs/2608.10717"
发布日期: "2026-08-11"
发布时间校准状态: "found"
发布时间需复核: "否"
发布时间来源: "rule:local:strict_original_body"
发布时间证据: "**\\[v1\\]** Tue, 11 Aug 2026 09:34:50 UTC (300 KB)"
发布时间校准原因: "规则确认唯一严格发布时间，来源 local:strict_original_body"
发布时间校准置信度: "high"
发布时间候选数量: 18
发布时间严格候选数量: 6
发布时间原页读取状态: "source template page reused from URL open"
发布时间未找到原因: ""
发布时间校准时间: "2026-08-12T11:13:18+08:00"
发布时间仲裁状态: "skipped"
发布时间仲裁尝试次数: 0
发布时间仲裁耗时毫秒: 0
发现时间: "2026-08-12T11:12:37+08:00"
入库时间: "2026-08-12T03:13:19.023Z"
来源平台: "arXiv 学术论文搜索"
搜索渠道: "source_template"
搜索词: "https://arxiv.org/search/?query=mass%20production&searchtype=all"
匹配关键词:
  - "mass production"
相关厂家:
  []
相关专家:
  []
内容类型: "网页"
抓取工具: "Free Fetch + Defuddle"
清洗工具: "Defuddle Markdown + Defuddle/Readability 正文提取"
原始附件:
  []
AI优质: "否"
AI打分: 0
AI分档: "非优质"
AI质检状态: "不通过"
AI打分理由: "内容为高能物理论文，与超节点/AI Rack/机柜级AI基础设施完全无关，仅因搜索词'称产'命中，实际无任何相关技术或商业信息。"
AI质检模型: "ali-deepseek-v4-flash"
AI质检时间: "2026-08-12T11:13:49+08:00"
AI主题相关性: 0
AI来源权威性: 0
AI新颖性: 0
AI技术细节: 0
AI商业部署信号: 0
AI完整性: 0
采集批次: "2026年8月12日2点04分20秒"
采集批次ID: "20260812-020420-289"
去重键: "https://arxiv.org/abs/2608.10717"
---

## High Energy Physics - Phenomenology

## Title:Evolution of the underlying event and non-extensive thermodynamics in pp collisions from RHIC to LHC energies

[View PDF](https://arxiv.org/pdf/2608.10717) [HTML (experimental)](https://arxiv.org/html/2608.10717v1)

> Abstract:We investigate the geometrical and thermodynamical aspects of particle production in pp collisions over a broad center-of-mass energy, ranging from $\sqrt{s}=62.4$ GeV to 13 TeV using PYTHIA8. We study the azimuthal dependence of charged-particle production relative to the leading particle. This includes the study of the Tsallis--Pareto parameters extracted from the charged-particle transverse-momentum spectra in fixed $\Delta\phi$ intervals relative to the leading charged particle. The simultaneous analysis of charged-particle multiplicity and event topology demonstrates that the underlying event (UE) dominated region can be extended beyond the conventional transverse side region across RHIC and LHC energies. To further disentangle effects from soft and hard particle production mechanisms, the study is performed in different transverse spherocity and charged-particle flattenicity classes. We demonstrate that the UE region extends beyond the conventional transverse region, validating an enlarged angular interval of $40^\circ\lesssim|\Delta\phi|\lesssim140^\circ$ from RHIC to LHC energies. Event-shape selections reveal that jetty events consistently exhibit larger $q$ and lower $T_{\rm s}$ than isotropic events. The $\Delta\phi$ profiles of charged-particle multiplicity and transverse spherocity remain universal in shape across collision energies despite the strong increase in overall event activity, whereas the Tsallis parameters retain a residual, leading-particle-driven energy dependence in the near- and away-side regions.

| Comments: |  |
| --- | --- |
| Subjects: | High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); High Energy Physics - Theory (hep-th); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th) |
| Cite as: | [arXiv:2608.10717](https://arxiv.org/abs/2608.10717) \[hep-ph\] |
|  | (or [arXiv:2608.10717v1](https://arxiv.org/abs/2608.10717v1) \[hep-ph\] for this version) |
|  | [https://doi.org/10.48550/arXiv.2608.10717](https://doi.org/10.48550/arXiv.2608.10717) |

## Submission history

From: Suraj Prasad \[[view email](https://arxiv.org/show-email/5689a687/2608.10717)\]  
**\[v1\]** Tue, 11 Aug 2026 09:34:50 UTC (300 KB)

[Which authors of this paper are endorsers?](https://arxiv.org/auth/show-endorsers/2608.10717) | Disable MathJax ([What is MathJax?](https://info.arxiv.org/help/mathjax.html))
