Scaling of pre-equilibrium dilepton production in QCD Kinetic Theory
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917926517342208 |
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| author | Garcia-Montero, Oscar Plaschke, Philip Schlichting, Sören |
| author_facet | Garcia-Montero, Oscar Plaschke, Philip Schlichting, Sören |
| contents | We use QCD kinetic theory to compute dilepton production coming from the pre-equilibrium phase of the Quark-Gluon Plasma created in high-energy heavy-ion collisions. We demonstrate that the dilepton spectrum exhibits a simple scaling in terms of the specific shear viscosity $η/s$ and entropy density $dS/dζ\sim {\scriptstyle \left(Tτ^{1/3}\right)_\infty^{3/2}}$, which can be derived from dimensional analysis in the presence of a pre-equilibrium attractor. Based on this scaling we perform event-by-event calculations of in-medium dilepton production and determine the invariant mass range where the pre-equilibrium yield is the leading contribution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_04846 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Scaling of pre-equilibrium dilepton production in QCD Kinetic Theory Garcia-Montero, Oscar Plaschke, Philip Schlichting, Sören High Energy Physics - Phenomenology Nuclear Theory We use QCD kinetic theory to compute dilepton production coming from the pre-equilibrium phase of the Quark-Gluon Plasma created in high-energy heavy-ion collisions. We demonstrate that the dilepton spectrum exhibits a simple scaling in terms of the specific shear viscosity $η/s$ and entropy density $dS/dζ\sim {\scriptstyle \left(Tτ^{1/3}\right)_\infty^{3/2}}$, which can be derived from dimensional analysis in the presence of a pre-equilibrium attractor. Based on this scaling we perform event-by-event calculations of in-medium dilepton production and determine the invariant mass range where the pre-equilibrium yield is the leading contribution. |
| title | Scaling of pre-equilibrium dilepton production in QCD Kinetic Theory |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2403.04846 |