K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions
Based on the fact that the mass difference between the chiral partners is an order parameter of chiral phase transition and that the chiral order parameter reduces substantially at the chemical freeze-out point in ultra-relativistic heavy ion collisions, we argue that the production ratio of K1 over...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269321003282 |
| _version_ | 1819137208735498240 |
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| author | Hae-Som Sung Sungtae Cho Juhee Hong Su Houng Lee Sanghoon Lim Taesoo Song |
| author_facet | Hae-Som Sung Sungtae Cho Juhee Hong Su Houng Lee Sanghoon Lim Taesoo Song |
| author_sort | Hae-Som Sung |
| collection | DOAJ |
| description | Based on the fact that the mass difference between the chiral partners is an order parameter of chiral phase transition and that the chiral order parameter reduces substantially at the chemical freeze-out point in ultra-relativistic heavy ion collisions, we argue that the production ratio of K1 over K⁎ in such collisions should be substantially larger than that predicted in the statistical hadronization model. We further show that while the enhancement effect might be contaminated by the relatively larger decrease of K1 meson than K⁎ meson during the hadronic phase, the signal will be visible through a systematic study on centrality as the kinetic freeze-out temperature is higher and the hadronic life time shorter in peripheral collisions than in central collisions. |
| first_indexed | 2024-12-22T10:47:13Z |
| format | Article |
| id | doaj.art-745334cbbdec4b63b69a730885f9a0b0 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-22T10:47:13Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-745334cbbdec4b63b69a730885f9a0b02022-12-21T18:28:53ZengElsevierPhysics Letters B0370-26932021-08-01819136388K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisionsHae-Som Sung0Sungtae Cho1Juhee Hong2Su Houng Lee3Sanghoon Lim4Taesoo Song5Department of Physics and Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of KoreaDivision of Science Education, Kangwon National University, Chuncheon 24341, Republic of KoreaDepartment of Physics and Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of KoreaDepartment of Physics and Institute of Physics and Applied Physics, Yonsei University, Seoul 03722, Republic of Korea; Corresponding author.Department of Physics, Pusan National University, Pusan, Republic of KoreaGSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, GermanyBased on the fact that the mass difference between the chiral partners is an order parameter of chiral phase transition and that the chiral order parameter reduces substantially at the chemical freeze-out point in ultra-relativistic heavy ion collisions, we argue that the production ratio of K1 over K⁎ in such collisions should be substantially larger than that predicted in the statistical hadronization model. We further show that while the enhancement effect might be contaminated by the relatively larger decrease of K1 meson than K⁎ meson during the hadronic phase, the signal will be visible through a systematic study on centrality as the kinetic freeze-out temperature is higher and the hadronic life time shorter in peripheral collisions than in central collisions.http://www.sciencedirect.com/science/article/pii/S0370269321003282 |
| spellingShingle | Hae-Som Sung Sungtae Cho Juhee Hong Su Houng Lee Sanghoon Lim Taesoo Song K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions Physics Letters B |
| title | K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| title_full | K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| title_fullStr | K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| title_full_unstemmed | K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| title_short | K1/K⁎ enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| title_sort | k1 k enhancement as a signature of chiral symmetry restoration in heavy ion collisions |
| url | http://www.sciencedirect.com/science/article/pii/S0370269321003282 |
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