Are Parton Showers in a Quark-Gluon Plasma Strongly Coupled? A Theorist's Test
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866909466363953152 |
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| author | Arnold, Peter Elgedawy, Omar Iqbal, Shahin |
| author_facet | Arnold, Peter Elgedawy, Omar Iqbal, Shahin |
| contents | We study whether in-medium showers of high-energy quarks and gluons can be treated as a sequence of individual splitting processes or whether there is significant quantum overlap between where one splitting ends and the next begins. Accounting for the Landau-Pomeranchuk-Migdal (LPM) effect, we calculate such overlap effects to leading order in high-energy $α_s(μ)$ for the simplest theoretical situation. We investigate a measure of overlap effects that is independent of physics that can be absorbed into an effective value $\hat{q}_{eff}$ of the jet-quenching parameter $\hat{q}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_15115 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Are Parton Showers in a Quark-Gluon Plasma Strongly Coupled? A Theorist's Test Arnold, Peter Elgedawy, Omar Iqbal, Shahin High Energy Physics - Phenomenology We study whether in-medium showers of high-energy quarks and gluons can be treated as a sequence of individual splitting processes or whether there is significant quantum overlap between where one splitting ends and the next begins. Accounting for the Landau-Pomeranchuk-Migdal (LPM) effect, we calculate such overlap effects to leading order in high-energy $α_s(μ)$ for the simplest theoretical situation. We investigate a measure of overlap effects that is independent of physics that can be absorbed into an effective value $\hat{q}_{eff}$ of the jet-quenching parameter $\hat{q}$. |
| title | Are Parton Showers in a Quark-Gluon Plasma Strongly Coupled? A Theorist's Test |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.15115 |