Mode-by-mode evolution of Pb-Pb collisions at 5.02 TeV in a hybrid model
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| Format: | Preprint |
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2025
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| _version_ | 1866911245406306304 |
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| author | Krupczak, Renata Borghini, Nicolas Roch, Hendrik |
| author_facet | Krupczak, Renata Borghini, Nicolas Roch, Hendrik |
| contents | We determine the average state and the uncorrelated modes that characterize the event-by-event fluctuations of the initial state in two typical centrality classes of Pb-Pb collisions at 5.02 TeV. We find that modes in a narrow central bin are similar to those in events at fixed vanishing impact parameter, while those in a mid-peripheral centrality class are affected by the impact-parameter variation. We study how each fluctuation mode affects observables both in the initial state and in the final state of the collisions, at the end of a state-of-the-art boost-invariant hybrid evolution with KoMPoST + MUSIC + iSS + SMASH, and show that implementing a hadronic transport cascade in such a mode-by-mode analysis with reasonable statistical noise is costly but feasible. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_05336 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mode-by-mode evolution of Pb-Pb collisions at 5.02 TeV in a hybrid model Krupczak, Renata Borghini, Nicolas Roch, Hendrik Nuclear Theory High Energy Physics - Phenomenology We determine the average state and the uncorrelated modes that characterize the event-by-event fluctuations of the initial state in two typical centrality classes of Pb-Pb collisions at 5.02 TeV. We find that modes in a narrow central bin are similar to those in events at fixed vanishing impact parameter, while those in a mid-peripheral centrality class are affected by the impact-parameter variation. We study how each fluctuation mode affects observables both in the initial state and in the final state of the collisions, at the end of a state-of-the-art boost-invariant hybrid evolution with KoMPoST + MUSIC + iSS + SMASH, and show that implementing a hadronic transport cascade in such a mode-by-mode analysis with reasonable statistical noise is costly but feasible. |
| title | Mode-by-mode evolution of Pb-Pb collisions at 5.02 TeV in a hybrid model |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2508.05336 |