Flavor dependence of jet quenching in heavy-ion collisions from a Bayesian analysis
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
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2023
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| _version_ | 1866909129957703680 |
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| author | Zhang, Shan-Liang Wang, Enke Xing, Hongxi Zhang, Ben-Wei |
| author_facet | Zhang, Shan-Liang Wang, Enke Xing, Hongxi Zhang, Ben-Wei |
| contents | We investigate the flavor dependence of jet quenching, by performing a systematic analysis of medium modifications on the inclusive jet, $γ$+jet, and $b$-jet in Pb+Pb collisions at the LHC. Our results from MadGraph+PYTHIA exhibit excellent agreement with experimental measurements of the inclusive jet, $γ$+jet and $b$-jet simultaneously in p+p collisions. We then utilize a Bayesian data-driven method to extract systematically the flavor-dependent jet energy loss distributions from experimental data, where the gluon, light quark and $b$-quark initiated energy loss distributions are well constrained and satisfy the predicted flavor hierarchy of jet quenching, i.e. $\langle ΔE_g \rangle > \langleΔE_q\rangle > \langleΔE_b\rangle$. It is shown that the quark-initiated jet energy loss distribution shows weaker centrality and $p_\text{T}$ dependence than the gluon-initiated one. We demonstrate the impacts of the slope of initial spectra, color-charge as well as parton mass dependent jet energy attenuation on the $γ/b$-jet suppression observed in heavy-ion collisions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_14881 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Flavor dependence of jet quenching in heavy-ion collisions from a Bayesian analysis Zhang, Shan-Liang Wang, Enke Xing, Hongxi Zhang, Ben-Wei High Energy Physics - Phenomenology High Energy Physics - Experiment We investigate the flavor dependence of jet quenching, by performing a systematic analysis of medium modifications on the inclusive jet, $γ$+jet, and $b$-jet in Pb+Pb collisions at the LHC. Our results from MadGraph+PYTHIA exhibit excellent agreement with experimental measurements of the inclusive jet, $γ$+jet and $b$-jet simultaneously in p+p collisions. We then utilize a Bayesian data-driven method to extract systematically the flavor-dependent jet energy loss distributions from experimental data, where the gluon, light quark and $b$-quark initiated energy loss distributions are well constrained and satisfy the predicted flavor hierarchy of jet quenching, i.e. $\langle ΔE_g \rangle > \langleΔE_q\rangle > \langleΔE_b\rangle$. It is shown that the quark-initiated jet energy loss distribution shows weaker centrality and $p_\text{T}$ dependence than the gluon-initiated one. We demonstrate the impacts of the slope of initial spectra, color-charge as well as parton mass dependent jet energy attenuation on the $γ/b$-jet suppression observed in heavy-ion collisions. |
| title | Flavor dependence of jet quenching in heavy-ion collisions from a Bayesian analysis |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2303.14881 |