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arXiv · 1805.11509

Deuteron production from phase-space coalescence in the UrQMD approach

Sukanya Sombun·Kristiya Tomuang·Ayut Limphirat·Paula Hillmann·Christoph Herold·Jan Steinheimer·Yupeng Yan·Marcus Bleicher
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Abstract

UrQMD phase-space coalescence calculations for the production of deuterons are compared with available data for various reactions from the GSI/FAIR energy regime up to LHC. It is found that the production process of deuterons, as reflected in their rapidity and transverse momentum distributions in p+p, p+A and A+A collisions at a beam energies starting from the GSI energy regime around 1 AGeV and up to the LHC, are in good agreement with experimental data. We further explore the energy and centrality dependence of the d/p ratios. Finally, we discuss anti-deuteron production for selected systems. Overall, a good description of the experimental data is observed. The results are also compatible with thermal model estimates. Most importantly this good description is based only on a single set of coalescence parameters that is independent of energy system size and can also be applied for anti-deuterons.

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Sukanya Sombun, Kristiya Tomuang, Ayut Limphirat, Paula Hillmann, Christoph Herold, Jan Steinheimer, Yupeng Yan, Marcus Bleicher. 2021-08-03. Deuteron production from phase-space coalescence in the UrQMD approach. https://doi.org/10.1103/physrevc.99.014901

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