Hadron productions and jet substructures associated with $Z^0/γ$ in Pb+Pb collisions at the LHC
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| Formato: | Preprint |
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2022
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| author | Zhang, Shan-Liang Xing, Hongxi Zhang, Ben-Wei |
| author_facet | Zhang, Shan-Liang Xing, Hongxi Zhang, Ben-Wei |
| contents | We carry out a detailed study of medium modifications on $Z^0$/$γ$+hadron correlations as well as jet substructures in association with $Z^0/γ$ in Pb+Pb collisions with $\sqrt{s_{NN}}=5.02$ TeV at the LHC. We utilize the Linear Boltzmann transport (LBT) model to simulate the jet-medium interactions and medium response, and an extended cluster hadronization model to investigate the non-perturbative transition of quarks and gluons into final hadrons in heavy-ion collisions. Including hadronization effect, we can well describe $Z^0/γ$+hadrons correlations and $Z^0/γ$-tagged jet substructures in both p+p and Pb+Pb collisions simultaneously. Medium modification on jet profile and jet fragmentation functions indicate that particles carrying a large fraction of the jet momentum are generally closely aligned with the jet axis, whereas low-momentum particles are observed to have a much broader angular distribution relative to jet axis in Pb+Pb collisions due to jet-medium interactions. In particular, we find that $Z^0/γ$-tagged hadron correlations are sensitive to the soft particles from the dense medium and medium response, while jet-substructures show weak dependence on those soft hadrons with only a fraction of them falling inside the jet area |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2209_15336 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Hadron productions and jet substructures associated with $Z^0/γ$ in Pb+Pb collisions at the LHC Zhang, Shan-Liang Xing, Hongxi Zhang, Ben-Wei High Energy Physics - Phenomenology Nuclear Theory We carry out a detailed study of medium modifications on $Z^0$/$γ$+hadron correlations as well as jet substructures in association with $Z^0/γ$ in Pb+Pb collisions with $\sqrt{s_{NN}}=5.02$ TeV at the LHC. We utilize the Linear Boltzmann transport (LBT) model to simulate the jet-medium interactions and medium response, and an extended cluster hadronization model to investigate the non-perturbative transition of quarks and gluons into final hadrons in heavy-ion collisions. Including hadronization effect, we can well describe $Z^0/γ$+hadrons correlations and $Z^0/γ$-tagged jet substructures in both p+p and Pb+Pb collisions simultaneously. Medium modification on jet profile and jet fragmentation functions indicate that particles carrying a large fraction of the jet momentum are generally closely aligned with the jet axis, whereas low-momentum particles are observed to have a much broader angular distribution relative to jet axis in Pb+Pb collisions due to jet-medium interactions. In particular, we find that $Z^0/γ$-tagged hadron correlations are sensitive to the soft particles from the dense medium and medium response, while jet-substructures show weak dependence on those soft hadrons with only a fraction of them falling inside the jet area |
| title | Hadron productions and jet substructures associated with $Z^0/γ$ in Pb+Pb collisions at the LHC |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2209.15336 |