Recent studies on hypernuclei lifetimes from STAR
The hyperon-nucleon (Y-N) interaction is an essential ingredient in the description of the equation-of-state of high-baryon-density matter. Light hypernuclei (A = 3, 4), being simple Y-N bound states, serve as cornerstones of our understanding of the Y-N interaction. Thus, precise measurements of th...
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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/2022/15/epjconf_hyp2022_08002.pdf |
| _version_ | 1811189184812023808 |
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| author | Leung Yue Hang |
| author_facet | Leung Yue Hang |
| author_sort | Leung Yue Hang |
| collection | DOAJ |
| description | The hyperon-nucleon (Y-N) interaction is an essential ingredient in the description of the equation-of-state of high-baryon-density matter. Light hypernuclei (A = 3, 4), being simple Y-N bound states, serve as cornerstones of our understanding of the Y-N interaction. Thus, precise measurements of their lifetimes are important, as they provide stringent tests to hyperon-nucleon interaction models.
The yields of light hypernuclei are expected to increase from high to low energy heavy-ion collisions due to the increase in baryon density. As a result, the STAR Beam Energy Scan II program, which spans an energy range of √sNN = 3.0 − 27.0 GeV, is particularly suited for hypernuclei studies. In these proceedings, recent results on the lifetimes of light hypernuclei (3ΛH, 4ΛH, 4ΛHe) measured in √sNN = 3.0 and 7.2 GeV Au+Au collisions are presented. The relative branching ratio R3 of the 3ΛH is intimately related to its lifetime. A new R3 measurement using data from √sNN = 3.0 GeV Au+Au collisions is reported. These results will be compared to previous measurements and theoretical calculations, and the physics implications will be discussed. |
| first_indexed | 2024-04-11T14:30:39Z |
| format | Article |
| id | doaj.art-2693733af7bd4f6987a99c588227d731 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-11T14:30:39Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-2693733af7bd4f6987a99c588227d7312022-12-22T04:18:36ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012710800210.1051/epjconf/202227108002epjconf_hyp2022_08002Recent studies on hypernuclei lifetimes from STARLeung Yue Hang0University of HeidelbergThe hyperon-nucleon (Y-N) interaction is an essential ingredient in the description of the equation-of-state of high-baryon-density matter. Light hypernuclei (A = 3, 4), being simple Y-N bound states, serve as cornerstones of our understanding of the Y-N interaction. Thus, precise measurements of their lifetimes are important, as they provide stringent tests to hyperon-nucleon interaction models. The yields of light hypernuclei are expected to increase from high to low energy heavy-ion collisions due to the increase in baryon density. As a result, the STAR Beam Energy Scan II program, which spans an energy range of √sNN = 3.0 − 27.0 GeV, is particularly suited for hypernuclei studies. In these proceedings, recent results on the lifetimes of light hypernuclei (3ΛH, 4ΛH, 4ΛHe) measured in √sNN = 3.0 and 7.2 GeV Au+Au collisions are presented. The relative branching ratio R3 of the 3ΛH is intimately related to its lifetime. A new R3 measurement using data from √sNN = 3.0 GeV Au+Au collisions is reported. These results will be compared to previous measurements and theoretical calculations, and the physics implications will be discussed.https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_08002.pdf |
| spellingShingle | Leung Yue Hang Recent studies on hypernuclei lifetimes from STAR EPJ Web of Conferences |
| title | Recent studies on hypernuclei lifetimes from STAR |
| title_full | Recent studies on hypernuclei lifetimes from STAR |
| title_fullStr | Recent studies on hypernuclei lifetimes from STAR |
| title_full_unstemmed | Recent studies on hypernuclei lifetimes from STAR |
| title_short | Recent studies on hypernuclei lifetimes from STAR |
| title_sort | recent studies on hypernuclei lifetimes from star |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_08002.pdf |
| work_keys_str_mv | AT leungyuehang recentstudiesonhypernucleilifetimesfromstar |