Hadronic scattering effects on W(2S) suppression in relativistic heavy-ion collisions

被引：0
作者：
Abreu, L. M. [1 ,2 ]
Navarra, F. S. [2 ]
Vieira, H. P. L. [1 ]
机构：
[1] Univ Fed Bahia, Inst Fis, Campus Univ Ondina, BR-40170115 Vitoria Da Conquista, BA, Brazil
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
来源：
PHYSICS LETTERS B | 2025年 / 864卷
基金：
巴西圣保罗研究基金会;
关键词：
PB-PB COLLISIONS; J/PSI SUPPRESSION; TRANSVERSE-MOMENTUM; 5.02; TEV; ABSORPTION; RAPIDITY; PSI(2S); PROMPT;
D O I：
10.1016/j.physletb.2025.139407
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this work we estimate the NW(2S)/NJ /W yield ratio in heavy-ion collisions, considering the interactions of the W(2S) and J/W states with light mesons in the hadron gas formed at the late stages of these collisions. Starting from the appropriate effective Lagrangians, we first compute the thermally-averaged cross sections for the production and absorption of the mentioned states, and then use them as input in the rate equations to determine the time evolution of NW(2S), NJ/W and NW(2S)/NJ/W. The main conclusion of our study is that the W(2S) and J/W multiplicities do not change much in the hadron gas phase and that the W(2S) is more absorbed than the J/W. The obtained final ratio is in agreement with recent experimental data.
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页数：6
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