Chemical equilibration in hadronic collisions
We study chemical equilibration in out-of-equilibrium quark-gluon plasma using the first principles method of QCD effective kinetic theory, accurate at weak coupling. In longitudinally expanding systems - relevant for relativistic nuclear collisions - we find that for realistic couplings chemical eq...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 April 2019
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| In: |
Physical review letters
Year: 2019, Volume: 122, Issue: 14, Pages: 1-7 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.142301 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.122.142301 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.142301 
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| Author Notes: | Aleksi Kurkela, Aleksas Mazeliauskas |
| Summary: | We study chemical equilibration in out-of-equilibrium quark-gluon plasma using the first principles method of QCD effective kinetic theory, accurate at weak coupling. In longitudinally expanding systems - relevant for relativistic nuclear collisions - we find that for realistic couplings chemical equilibration takes place after hydrodynamization, but well before local thermalization. We estimate that hadronic collisions with final state multiplicities dNch/dη≳102 live long enough to reach approximate chemical equilibrium, which is consistent with the saturation of strangeness enhancement observed in proton-proton, proton-nucleus, and nucleus-nucleus collisions. |
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| Item Description: | Gesehen am 24.05.2019 |
| Physical Description: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.142301 |