Holographic spin alignment of J/ψ meson in magnetized plasma
Abstract We study the mass spectra and spin alignment of vector meson J/ψ in a thermal magnetized background using a generalized theoretical framework based on gauge/gravity duality. Utilizing a soft wall model for the QGP background and a massive vector field for the J/ψ meson, we delve into the me...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-08-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP08(2024)070 |
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| author | Yan-Qing Zhao Xin-Li Sheng Si-Wen Li Defu Hou |
| author_facet | Yan-Qing Zhao Xin-Li Sheng Si-Wen Li Defu Hou |
| author_sort | Yan-Qing Zhao |
| collection | DOAJ |
| description | Abstract We study the mass spectra and spin alignment of vector meson J/ψ in a thermal magnetized background using a generalized theoretical framework based on gauge/gravity duality. Utilizing a soft wall model for the QGP background and a massive vector field for the J/ψ meson, we delve into the meson’s spectral function and spin parameters (λ θ , λ φ , λ θφ ) for different cases, assessing their response to variations in magnetic field strength, momentum, and temperature. We initially examine scenarios where a meson’s momentum aligns parallel to the magnetic field in helicity frame. Our results reveal a magnetic field-induced positive λ θ H $$ {\lambda}_{\theta}^{\textrm{H}} $$ for low meson momentum, transitioning to negative with increased momentum. As a comparison, we also study the case of momentum perpendicular to the magnetic field and find the direction of magnetic field does not affect the qualitative behavior for the eB-dependence of λ θ H $$ {\lambda}_{\theta}^{\textrm{H}} $$ . Moreover, we apply our model to real heavy-ion collisions for three different spin quantization directions. Further comparisons with experimental data show qualitative agreement for spin parameters λ θ and λ φ in the helicity and Collins-Soper frames. |
| format | Article |
| id | doaj-art-90658a0362c44e4bb6a738b54ff3dcc6 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-90658a0362c44e4bb6a738b54ff3dcc62025-08-20T02:22:32ZengSpringerOpenJournal of High Energy Physics1029-84792024-08-012024812410.1007/JHEP08(2024)070Holographic spin alignment of J/ψ meson in magnetized plasmaYan-Qing Zhao0Xin-Li Sheng1Si-Wen Li2Defu Hou3Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOS), Central China Normal UniversityINFN Sezione di FirenzeDepartment of Physics, College of Science, Dalian Maritime UniversityInstitute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOS), Central China Normal UniversityAbstract We study the mass spectra and spin alignment of vector meson J/ψ in a thermal magnetized background using a generalized theoretical framework based on gauge/gravity duality. Utilizing a soft wall model for the QGP background and a massive vector field for the J/ψ meson, we delve into the meson’s spectral function and spin parameters (λ θ , λ φ , λ θφ ) for different cases, assessing their response to variations in magnetic field strength, momentum, and temperature. We initially examine scenarios where a meson’s momentum aligns parallel to the magnetic field in helicity frame. Our results reveal a magnetic field-induced positive λ θ H $$ {\lambda}_{\theta}^{\textrm{H}} $$ for low meson momentum, transitioning to negative with increased momentum. As a comparison, we also study the case of momentum perpendicular to the magnetic field and find the direction of magnetic field does not affect the qualitative behavior for the eB-dependence of λ θ H $$ {\lambda}_{\theta}^{\textrm{H}} $$ . Moreover, we apply our model to real heavy-ion collisions for three different spin quantization directions. Further comparisons with experimental data show qualitative agreement for spin parameters λ θ and λ φ in the helicity and Collins-Soper frames.https://doi.org/10.1007/JHEP08(2024)070Gauge-Gravity CorrespondenceQuark-Gluon PlasmaQuarkoniumThe Strong Coupling |
| spellingShingle | Yan-Qing Zhao Xin-Li Sheng Si-Wen Li Defu Hou Holographic spin alignment of J/ψ meson in magnetized plasma Journal of High Energy Physics Gauge-Gravity Correspondence Quark-Gluon Plasma Quarkonium The Strong Coupling |
| title | Holographic spin alignment of J/ψ meson in magnetized plasma |
| title_full | Holographic spin alignment of J/ψ meson in magnetized plasma |
| title_fullStr | Holographic spin alignment of J/ψ meson in magnetized plasma |
| title_full_unstemmed | Holographic spin alignment of J/ψ meson in magnetized plasma |
| title_short | Holographic spin alignment of J/ψ meson in magnetized plasma |
| title_sort | holographic spin alignment of j ψ meson in magnetized plasma |
| topic | Gauge-Gravity Correspondence Quark-Gluon Plasma Quarkonium The Strong Coupling |
| url | https://doi.org/10.1007/JHEP08(2024)070 |
| work_keys_str_mv | AT yanqingzhao holographicspinalignmentofjpsmesoninmagnetizedplasma AT xinlisheng holographicspinalignmentofjpsmesoninmagnetizedplasma AT siwenli holographicspinalignmentofjpsmesoninmagnetizedplasma AT defuhou holographicspinalignmentofjpsmesoninmagnetizedplasma |