Sources of longitudinal flow decorrelations in high-energy nuclear collisions
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916371242156032 |
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| author | Jia, Jiangyong Huang, Shengli Zhang, Chunjian Bhatta, Somadutta |
| author_facet | Jia, Jiangyong Huang, Shengli Zhang, Chunjian Bhatta, Somadutta |
| contents | The longitudinal structure of the quark-gluon plasma (QGP) consists of several components spanning various scales. However, its short-range features are often obscured by final-state non-flow correlations. Here, we introduce a data-driven approach to separate initial state structures from non-flow effects. The longitudinal structure is found having two distinct components: one that reflects the global twisted geometry of the QGP, and another that captures localized fluctuations in rapidity. The characteristics of this second component, contributing to short- and medium-range flow decorrelations, can be quantified by comparing collisions of nuclei with different shapes. This study represents the first successful attempt to disentangle long- and short-range flow decorrelations from non-flow backgrounds, providing new insights into the initial conditions of heavy-ion collisions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_15006 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Sources of longitudinal flow decorrelations in high-energy nuclear collisions Jia, Jiangyong Huang, Shengli Zhang, Chunjian Bhatta, Somadutta Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment The longitudinal structure of the quark-gluon plasma (QGP) consists of several components spanning various scales. However, its short-range features are often obscured by final-state non-flow correlations. Here, we introduce a data-driven approach to separate initial state structures from non-flow effects. The longitudinal structure is found having two distinct components: one that reflects the global twisted geometry of the QGP, and another that captures localized fluctuations in rapidity. The characteristics of this second component, contributing to short- and medium-range flow decorrelations, can be quantified by comparing collisions of nuclei with different shapes. This study represents the first successful attempt to disentangle long- and short-range flow decorrelations from non-flow backgrounds, providing new insights into the initial conditions of heavy-ion collisions. |
| title | Sources of longitudinal flow decorrelations in high-energy nuclear collisions |
| topic | Nuclear Theory High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2408.15006 |