System-size dependence of $γ$-jet modifications in heavy-ion collisions
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866908497103290368 |
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| author | Xiao, Yu-Xin Han, Qing-Fei Zhang, He-Xia Zhang, Hanzhong |
| author_facet | Xiao, Yu-Xin Han, Qing-Fei Zhang, He-Xia Zhang, Hanzhong |
| contents | Medium modifications of the $γ$-triggered jets are investigated with the Linear Boltzmann Transport (LBT) model in heavy-ion collisions with varying system sizes, focusing on centrality dependence in Pb+Pb and Xe+Xe collisions at the LHC. Our numerical results reveal that jets produced in central collisions exhibit a wider transverse asymmetry ($A_N^y$) distribution, a broader jet shape, and a more pronounced $γ$-jet transverse momentum imbalance ($X_{Jγ}=p_T^{\rm jet}/p_T^γ$) compared to peripheral collisions. These effects arise from the longer path length and stronger jet-medium interactions in central collisions, leading to enhanced jet quenching and medium response. Our findings demonstrate that the magnitude of $γ$-jet modifications is sensitive to the size and centrality of the collision system, with larger systems inducing more significant alterations due to increased energy loss and medium feedback. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_15403 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | System-size dependence of $γ$-jet modifications in heavy-ion collisions Xiao, Yu-Xin Han, Qing-Fei Zhang, He-Xia Zhang, Hanzhong Nuclear Theory Medium modifications of the $γ$-triggered jets are investigated with the Linear Boltzmann Transport (LBT) model in heavy-ion collisions with varying system sizes, focusing on centrality dependence in Pb+Pb and Xe+Xe collisions at the LHC. Our numerical results reveal that jets produced in central collisions exhibit a wider transverse asymmetry ($A_N^y$) distribution, a broader jet shape, and a more pronounced $γ$-jet transverse momentum imbalance ($X_{Jγ}=p_T^{\rm jet}/p_T^γ$) compared to peripheral collisions. These effects arise from the longer path length and stronger jet-medium interactions in central collisions, leading to enhanced jet quenching and medium response. Our findings demonstrate that the magnitude of $γ$-jet modifications is sensitive to the size and centrality of the collision system, with larger systems inducing more significant alterations due to increased energy loss and medium feedback. |
| title | System-size dependence of $γ$-jet modifications in heavy-ion collisions |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2508.15403 |