Hadronic J/ψ regeneration in Pb+Pb collisions
We make use of published yields for D-mesons and J/ψ in Pb+Pb collisions at ALICE and a schematic description of the expansion of the hadron gas to study D-meson collisions during the hadronic break-up phase as a production mechanism for charmonium in relativistic heavy ion collisions at the Large H...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-11-01
|
| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323005804 |
| _version_ | 1797632682091347968 |
|---|---|
| author | Joseph Dominicus Lap Berndt Müller |
| author_facet | Joseph Dominicus Lap Berndt Müller |
| author_sort | Joseph Dominicus Lap |
| collection | DOAJ |
| description | We make use of published yields for D-mesons and J/ψ in Pb+Pb collisions at ALICE and a schematic description of the expansion of the hadron gas to study D-meson collisions during the hadronic break-up phase as a production mechanism for charmonium in relativistic heavy ion collisions at the Large Hadron Collider. Our calculation is based on chemical reaction rates with thermal cross sections for an effective meson interaction among pseudoscalar and vector mesons. We find that due to regeneration, the newly measured J/ψ yields are consistent with anywhere from roughly 25% to 110% of the total yield present at hadronization time. This allows us to bound the fractional abundance of J/ψ immediately after hadronization: 0.28≤dN0J/ψ/dydNeqJ/ψ/dy≤1.13. Our results are robust under the relaxation of the particulars of our schematic description and imply that it will be difficult to distinguish regeneration during hadronization from regeneration by final-state hadronic interactions. Therefore, regeneration must be taken into account when modeling. |
| first_indexed | 2024-03-11T11:41:16Z |
| format | Article |
| id | doaj.art-2d6b85d69725479dba920539ba53f789 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-03-11T11:41:16Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-2d6b85d69725479dba920539ba53f7892023-11-10T04:15:56ZengElsevierPhysics Letters B0370-26932023-11-01846138246Hadronic J/ψ regeneration in Pb+Pb collisionsJoseph Dominicus Lap0Berndt Müller1Department of Physics, Yale University, New Haven, CT 06511, USA; Corresponding author.Department of Physics, Yale University, New Haven, CT 06511, USA; Department of Physics, Duke University, Durham, NC 27708, USAWe make use of published yields for D-mesons and J/ψ in Pb+Pb collisions at ALICE and a schematic description of the expansion of the hadron gas to study D-meson collisions during the hadronic break-up phase as a production mechanism for charmonium in relativistic heavy ion collisions at the Large Hadron Collider. Our calculation is based on chemical reaction rates with thermal cross sections for an effective meson interaction among pseudoscalar and vector mesons. We find that due to regeneration, the newly measured J/ψ yields are consistent with anywhere from roughly 25% to 110% of the total yield present at hadronization time. This allows us to bound the fractional abundance of J/ψ immediately after hadronization: 0.28≤dN0J/ψ/dydNeqJ/ψ/dy≤1.13. Our results are robust under the relaxation of the particulars of our schematic description and imply that it will be difficult to distinguish regeneration during hadronization from regeneration by final-state hadronic interactions. Therefore, regeneration must be taken into account when modeling.http://www.sciencedirect.com/science/article/pii/S0370269323005804Heavy ionJ/ψ regenerationCharmoniumD-meson collisionsHadronization |
| spellingShingle | Joseph Dominicus Lap Berndt Müller Hadronic J/ψ regeneration in Pb+Pb collisions Physics Letters B Heavy ion J/ψ regeneration Charmonium D-meson collisions Hadronization |
| title | Hadronic J/ψ regeneration in Pb+Pb collisions |
| title_full | Hadronic J/ψ regeneration in Pb+Pb collisions |
| title_fullStr | Hadronic J/ψ regeneration in Pb+Pb collisions |
| title_full_unstemmed | Hadronic J/ψ regeneration in Pb+Pb collisions |
| title_short | Hadronic J/ψ regeneration in Pb+Pb collisions |
| title_sort | hadronic j ψ regeneration in pb pb collisions |
| topic | Heavy ion J/ψ regeneration Charmonium D-meson collisions Hadronization |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323005804 |
| work_keys_str_mv | AT josephdominicuslap hadronicjpsregenerationinpbpbcollisions AT berndtmuller hadronicjpsregenerationinpbpbcollisions |