File:PhysRevLett.122.142301.pdf
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DescriptionPhysRevLett.122.142301.pdf |
English: 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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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.142301 https://doi.org/10.1103/PhysRevLett.122.142301 |
Author | Aleksi Kurkela and Aleksas Mazeliauskas |
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Short title | Chemical Equilibration in Hadronic Collisions |
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Image title | doi:10.1103/PhysRevLett.122.142301 url:https://doi.org/10.1103/PhysRevLett.122.142301 |
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Software used | Published by the American Physical Society |
Conversion program | Acrobat Distiller 10.1.16 (Windows) |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |