Nature of excited 𝚵 baryons with threshold effects
Spectroscopy of excited baryons with strangeness S = −2 is stimulated by recent experimental developments. Here we focus on the Ξ(1620) which locates close to the K̅Λ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the...
| Main Authors: | , |
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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_10002.pdf |
| _version_ | 1811308843292950528 |
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| author | Nishibuchi Takuma Hyodo Tetsuo |
| author_facet | Nishibuchi Takuma Hyodo Tetsuo |
| author_sort | Nishibuchi Takuma |
| collection | DOAJ |
| description | Spectroscopy of excited baryons with strangeness S = −2 is stimulated by recent experimental developments. Here we focus on the Ξ(1620) which locates close to the K̅Λ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the Ξ(1620) appears as a resonance. We demonstrate that the K̅Λ threshold effects distort the peak of the Ξ(1620) resonance from the simple Breit-Wigner distribution. |
| first_indexed | 2024-04-13T09:31:29Z |
| format | Article |
| id | doaj.art-c824caefec024611af59e9b97c15362b |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-04-13T09:31:29Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-c824caefec024611af59e9b97c15362b2022-12-22T02:52:15ZengEDP SciencesEPJ Web of Conferences2100-014X2022-01-012711000210.1051/epjconf/202227110002epjconf_hyp2022_10002Nature of excited 𝚵 baryons with threshold effectsNishibuchi Takuma0Hyodo Tetsuo1Department of Physics, Tokyo Metropolitan UniversityDepartment of Physics, Tokyo Metropolitan UniversitySpectroscopy of excited baryons with strangeness S = −2 is stimulated by recent experimental developments. Here we focus on the Ξ(1620) which locates close to the K̅Λ threshold. To take into account the threshold effects, we construct the coupled-channels meson-baryon scattering amplitude where the Ξ(1620) appears as a resonance. We demonstrate that the K̅Λ threshold effects distort the peak of the Ξ(1620) resonance from the simple Breit-Wigner distribution.https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_10002.pdf |
| spellingShingle | Nishibuchi Takuma Hyodo Tetsuo Nature of excited 𝚵 baryons with threshold effects EPJ Web of Conferences |
| title | Nature of excited 𝚵 baryons with threshold effects |
| title_full | Nature of excited 𝚵 baryons with threshold effects |
| title_fullStr | Nature of excited 𝚵 baryons with threshold effects |
| title_full_unstemmed | Nature of excited 𝚵 baryons with threshold effects |
| title_short | Nature of excited 𝚵 baryons with threshold effects |
| title_sort | nature of excited 𝚵 baryons with threshold effects |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2022/15/epjconf_hyp2022_10002.pdf |
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