Probing jet hadrochemistry in Pb--Pb collisions with ALICE
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912546230894592 |
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| author | Cantway, Sierra |
| author_facet | Cantway, Sierra |
| contents | Jet substructure measurements in heavy-ion collisions provide constraints on jet quenching and the medium response in the QGP. Though there has been remarkable progress in inclusive-charged-hadron jet substructure measurements, understanding the identified particle composition of jets and their modification in heavy-ion collisions has proven challenging. Jet quenching models predict that the jet hadrochemical composition may be modified in heavy-ion collisions due to jet-medium interactions, as well as the medium response. Measurements of identified particles in jets can help discriminate between various parton-QGP interactions. We present the first measurements of $π$, K, and p ratios within charged-particle-jets, as well as in the underlying event, as a function of particle transverse momentum in pp and Pb--Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV. These measurements leverage the excellent PID capabilities of ALICE over a wide transverse momentum range. These results aim to understand soft particle production mechanisms and distinguish modified jet fragmentation from bulk effects. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_14987 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing jet hadrochemistry in Pb--Pb collisions with ALICE Cantway, Sierra Nuclear Experiment Jet substructure measurements in heavy-ion collisions provide constraints on jet quenching and the medium response in the QGP. Though there has been remarkable progress in inclusive-charged-hadron jet substructure measurements, understanding the identified particle composition of jets and their modification in heavy-ion collisions has proven challenging. Jet quenching models predict that the jet hadrochemical composition may be modified in heavy-ion collisions due to jet-medium interactions, as well as the medium response. Measurements of identified particles in jets can help discriminate between various parton-QGP interactions. We present the first measurements of $π$, K, and p ratios within charged-particle-jets, as well as in the underlying event, as a function of particle transverse momentum in pp and Pb--Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV. These measurements leverage the excellent PID capabilities of ALICE over a wide transverse momentum range. These results aim to understand soft particle production mechanisms and distinguish modified jet fragmentation from bulk effects. |
| title | Probing jet hadrochemistry in Pb--Pb collisions with ALICE |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2508.14987 |