\(B_c\) 大型强子对撞机核碰撞中非热化底夸克的增强

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2025-03-04 DOI:10.1140/epja/s10050-025-01515-7

Jiaxing Zhao, Pengfei Zhuang

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引用次数: 0

摘要

我们研究了在有限温度下具有解离和再生的输运方法中高能核碰撞\(B_c\)的产生。由于p+p碰撞很少产生，夸克-胶子等离子体中不相关的c夸克和\({\bar{b}}\)夸克的强结合，在大型强子对撞机的核碰撞中，\(B_c\)的产率显著提高。此外，\(B_c\)的中心性和动量依赖产率灵敏地反映了底夸克的热化程度。而新观测到的实验数据更倾向于夸克-胶子等离子体中的热底夸克分布。

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\(B_c\) enhancement with non-thermalized bottom quarks in nuclear collisions at large Hadron collider

We study \(B_c\) production in high-energy nuclear collisions in a transport approach with dissociation and regeneration at finite temperatures. Due to the rare production in p+p collisions and the strong combination of uncorrelated c and \({\bar{b}}\) quarks in the quark-gluon plasma, the \(B_c\) yield is significantly enhanced in the nuclear collisions at the Large Hadron Collider. Moreover, the centrality and momentum-dependent yield of \(B_c\) sensitively reflect the thermalization degree of bottom quarks. And the newly observed experimental data favors a far from the thermal bottom quark distribution in the quark-gluon plasma.

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来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.