Quarkonium production in pp and heavy-ion collisions
Campus Frankfurt, 60438 Frankfurt, Germany Abstract. We describe quarkonium production in pp and heavy-ion collisions by using the Remler’s formalism where quarkonium density operator is applied to all possible combination of heavy quark and heavy antiquark pairs. In pp collisions heavy (anti)quark...
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| Format: | Article |
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EDP Sciences
2025-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_04008.pdf |
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| author | Song Taesoo Aichelin Joerg Zhao Jiaxing Gossiaux Pol B. Bratkovskaya Elena |
| author_facet | Song Taesoo Aichelin Joerg Zhao Jiaxing Gossiaux Pol B. Bratkovskaya Elena |
| author_sort | Song Taesoo |
| collection | DOAJ |
| description | Campus Frankfurt, 60438 Frankfurt, Germany Abstract. We describe quarkonium production in pp and heavy-ion collisions by using the Remler’s formalism where quarkonium density operator is applied to all possible combination of heavy quark and heavy antiquark pairs. In pp collisions heavy (anti)quark momentum is provided by the PYTHIA event generator after rescaling pT and rapidity to imitate the FONLL calculations. Then spatial separation between heavy quark and heavy antiquark is introduced based on the uncertainty principle. In heavy-ion collisions quarkonium wavefunction changes with temperature assuming heavy quark potential equals the free energy of heavy quark pair in heat bath. The density operator is updated whenever heavy quark or heavy antiquark scatters in quark-gluon plasma (QGP). Our results are consistent with the experimental data on bottomonia from ALICE and CMS Collaborations assuming that the interaction rate of bottom (anti)quark in bottomonium is suppressed to 10 % that of unbound bottom (anti)quark. We also find that off-diagonal recombination of bottomonium from two different initial pairs barely happens even in Pb+Pb collisions at √sNN = 5.02 TeV. |
| format | Article |
| id | doaj-art-3eec5af637fe4dc388566e99778a807f |
| institution | Kabale University |
| issn | 2100-014X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj-art-3eec5af637fe4dc388566e99778a807f2025-02-05T10:53:01ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013160400810.1051/epjconf/202531604008epjconf_sqm2024_04008Quarkonium production in pp and heavy-ion collisionsSong Taesoo0Aichelin Joerg1Zhao Jiaxing2Gossiaux Pol B.3Bratkovskaya Elena4GSI Helmholtzzentrum für Schwerionenforschung GmbHSUBATECH UMR 6457 (IMT Atlantique Université de Nantes, IN2P3/CNRS)Institute for Theoretical Physics, Johann Wolfgang Goethe UniversitätSUBATECH UMR 6457 (IMT Atlantique Université de Nantes, IN2P3/CNRS)GSI Helmholtzzentrum für Schwerionenforschung GmbHCampus Frankfurt, 60438 Frankfurt, Germany Abstract. We describe quarkonium production in pp and heavy-ion collisions by using the Remler’s formalism where quarkonium density operator is applied to all possible combination of heavy quark and heavy antiquark pairs. In pp collisions heavy (anti)quark momentum is provided by the PYTHIA event generator after rescaling pT and rapidity to imitate the FONLL calculations. Then spatial separation between heavy quark and heavy antiquark is introduced based on the uncertainty principle. In heavy-ion collisions quarkonium wavefunction changes with temperature assuming heavy quark potential equals the free energy of heavy quark pair in heat bath. The density operator is updated whenever heavy quark or heavy antiquark scatters in quark-gluon plasma (QGP). Our results are consistent with the experimental data on bottomonia from ALICE and CMS Collaborations assuming that the interaction rate of bottom (anti)quark in bottomonium is suppressed to 10 % that of unbound bottom (anti)quark. We also find that off-diagonal recombination of bottomonium from two different initial pairs barely happens even in Pb+Pb collisions at √sNN = 5.02 TeV.https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_04008.pdf |
| spellingShingle | Song Taesoo Aichelin Joerg Zhao Jiaxing Gossiaux Pol B. Bratkovskaya Elena Quarkonium production in pp and heavy-ion collisions EPJ Web of Conferences |
| title | Quarkonium production in pp and heavy-ion collisions |
| title_full | Quarkonium production in pp and heavy-ion collisions |
| title_fullStr | Quarkonium production in pp and heavy-ion collisions |
| title_full_unstemmed | Quarkonium production in pp and heavy-ion collisions |
| title_short | Quarkonium production in pp and heavy-ion collisions |
| title_sort | quarkonium production in pp and heavy ion collisions |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2025/01/epjconf_sqm2024_04008.pdf |
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