Improved quark coalescence model for spin alignments of vector mesons
We propose an improved quark coalescence model for spin alignment of vector mesons by spin density matrix with phase space dependence. Within this model we propose an understanding of spin alignments of vector mesons ϕ and K*0 in the static limit: a large positive deviation of ρ00 for ϕ mesons from...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2022/03/epjconf_sqm2021_11013.pdf |
| _version_ | 1828438228628144128 |
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| author | Sheng Xin-Li |
| author_facet | Sheng Xin-Li |
| author_sort | Sheng Xin-Li |
| collection | DOAJ |
| description | We propose an improved quark coalescence model for spin alignment of vector mesons by spin density matrix with phase space dependence. Within this model we propose an understanding of spin alignments of vector mesons ϕ and K*0 in the static limit: a large positive deviation of ρ00 for ϕ mesons from 1/3 may come from the electric part of the vector ϕ field, while a negative deviation of ρ00 for K*0 mesons may come from the electric part of vorticity fields. In the low-pT region, ρ00 for K*0 mesons is proportional to pT2$p_T^2$pT2, which is qualitatively agree with experimental results. |
| first_indexed | 2024-12-10T19:59:42Z |
| format | Article |
| id | doaj.art-30b4617cd7194c1c99ffd044282e1867 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-10T19:59:42Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-30b4617cd7194c1c99ffd044282e18672022-12-22T01:35:32ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012591101310.1051/epjconf/202225911013epjconf_sqm2021_11013Improved quark coalescence model for spin alignments of vector mesonsSheng Xin-Li0Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal UniversityWe propose an improved quark coalescence model for spin alignment of vector mesons by spin density matrix with phase space dependence. Within this model we propose an understanding of spin alignments of vector mesons ϕ and K*0 in the static limit: a large positive deviation of ρ00 for ϕ mesons from 1/3 may come from the electric part of the vector ϕ field, while a negative deviation of ρ00 for K*0 mesons may come from the electric part of vorticity fields. In the low-pT region, ρ00 for K*0 mesons is proportional to pT2$p_T^2$pT2, which is qualitatively agree with experimental results.https://www.epj-conferences.org/articles/epjconf/pdf/2022/03/epjconf_sqm2021_11013.pdf |
| spellingShingle | Sheng Xin-Li Improved quark coalescence model for spin alignments of vector mesons EPJ Web of Conferences |
| title | Improved quark coalescence model for spin alignments of vector mesons |
| title_full | Improved quark coalescence model for spin alignments of vector mesons |
| title_fullStr | Improved quark coalescence model for spin alignments of vector mesons |
| title_full_unstemmed | Improved quark coalescence model for spin alignments of vector mesons |
| title_short | Improved quark coalescence model for spin alignments of vector mesons |
| title_sort | improved quark coalescence model for spin alignments of vector mesons |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/03/epjconf_sqm2021_11013.pdf |
| work_keys_str_mv | AT shengxinli improvedquarkcoalescencemodelforspinalignmentsofvectormesons |