Bc enhancement with non-thermalized bottom quarks in nuclear collisions at large Hadron collider

被引：0
作者：
Zhao, Jiaxing [1 ,2 ,3 ,4 ]
Zhuang, Pengfei [1 ]
机构：
[1] Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
[2] Univ Nantes, SUBATECH, IMT Atlantique, IN2P3,CNRS, 4 Rue Alfred Kastler, F-44307 Nantes, France
[3] Helmholtz Res Acad Hesse FAIR HFHF, GSI Helmholtz Ctr Heavy Ion Phys, Campus Frankfurt, D-60438 Frankfurt, Germany
[4] Goethe Univ Frankfurt, Inst Theoret Phys, Max von Laue Str 1, D-60438 Frankfurt, Germany
来源：
EUROPEAN PHYSICAL JOURNAL A | 2025年 / 61卷 / 03期
基金：
中国国家自然科学基金;
关键词：
SHORT-DISTANCE ANALYSIS; TRANSVERSE-MOMENTUM; C MESONS; HEAVY; QUARKONIUM; SYSTEMS; MODEL;
D O I：
10.1140/epja/s10050-025-01515-7
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study Bc 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 b quarks in the quark-gluon plasma, the Bc yield is significantly enhanced in the nuclear collisions at the Large Hadron Collider. Moreover, the centrality and momentum-dependent yield of Bc 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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页数：8
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