Measurements on the production and properties of light hypernuclei at STAR
The hyperon-nucleon (Y-N) interaction, an important ingredient for the nuclear equation-of-state (EoS), remains poorly constrained. Precise measurements of hypernucei intrinsic properties and production yields in heavy-ion collisions are crucial for the understanding of their production mechanisms a...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2023-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2023/02/epjconf_sqm2022_04003.pdf |
| _version_ | 1811157448709373952 |
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| author | Ji Yuanjing |
| author_facet | Ji Yuanjing |
| author_sort | Ji Yuanjing |
| collection | DOAJ |
| description | The hyperon-nucleon (Y-N) interaction, an important ingredient for the nuclear equation-of-state (EoS), remains poorly constrained. Precise measurements of hypernucei intrinsic properties and production yields in heavy-ion collisions are crucial for the understanding of their production mechanisms and the strength of the Y-N interaction. Thanks to the high statistics data taken from the STAR BES II program, a series of hypernuclei measurements are carried out at low energies. In these proceedings, we present the kinematic and centrality dependence of light hypernuclei production yields and strangeness population factor (S3, S4) in Au+Au collisions at √SNN = 3sNN=3 GeV. We also report the energy dependence of Λ3HΛ3H yields and S3 at mid-rapidity from 3 to 27 GeV Au+Au collisions. Precise measurements of Λ4HeΛ4He lifetime and Λ3HΛ3H branching ratio are also reported. These results are compared with model calculations and physics implications are discussed. |
| first_indexed | 2024-04-10T05:07:47Z |
| format | Article |
| id | doaj.art-f619e3031d82432fa7f2f97e56478f0f |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-10T05:07:47Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-f619e3031d82432fa7f2f97e56478f0f2023-03-09T12:03:02ZengEDP SciencesEPJ Web of Conferences2100-014X2023-01-012760400310.1051/epjconf/202327604003epjconf_sqm2022_04003Measurements on the production and properties of light hypernuclei at STARJi Yuanjing0Lawrence Berkeley National LaboratoryThe hyperon-nucleon (Y-N) interaction, an important ingredient for the nuclear equation-of-state (EoS), remains poorly constrained. Precise measurements of hypernucei intrinsic properties and production yields in heavy-ion collisions are crucial for the understanding of their production mechanisms and the strength of the Y-N interaction. Thanks to the high statistics data taken from the STAR BES II program, a series of hypernuclei measurements are carried out at low energies. In these proceedings, we present the kinematic and centrality dependence of light hypernuclei production yields and strangeness population factor (S3, S4) in Au+Au collisions at √SNN = 3sNN=3 GeV. We also report the energy dependence of Λ3HΛ3H yields and S3 at mid-rapidity from 3 to 27 GeV Au+Au collisions. Precise measurements of Λ4HeΛ4He lifetime and Λ3HΛ3H branching ratio are also reported. These results are compared with model calculations and physics implications are discussed.https://www.epj-conferences.org/articles/epjconf/pdf/2023/02/epjconf_sqm2022_04003.pdf |
| spellingShingle | Ji Yuanjing Measurements on the production and properties of light hypernuclei at STAR EPJ Web of Conferences |
| title | Measurements on the production and properties of light hypernuclei at STAR |
| title_full | Measurements on the production and properties of light hypernuclei at STAR |
| title_fullStr | Measurements on the production and properties of light hypernuclei at STAR |
| title_full_unstemmed | Measurements on the production and properties of light hypernuclei at STAR |
| title_short | Measurements on the production and properties of light hypernuclei at STAR |
| title_sort | measurements on the production and properties of light hypernuclei at star |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2023/02/epjconf_sqm2022_04003.pdf |
| work_keys_str_mv | AT jiyuanjing measurementsontheproductionandpropertiesoflighthypernucleiatstar |