On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay
Abstract We propose the reaction $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - , with the $$\Sigma ^{*-}$$ Σ ∗ - decaying to $$\pi ^- \Lambda $$ π - Λ in order to show evidence for the existence of two $$\Xi (1820)$$ Ξ ( 1820 ) states, one around 1824...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13293-5 |
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| author | Man-Yu Duan Jing Song Wei-Hong Liang E. Oset |
| author_facet | Man-Yu Duan Jing Song Wei-Hong Liang E. Oset |
| author_sort | Man-Yu Duan |
| collection | DOAJ |
| description | Abstract We propose the reaction $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - , with the $$\Sigma ^{*-}$$ Σ ∗ - decaying to $$\pi ^- \Lambda $$ π - Λ in order to show evidence for the existence of two $$\Xi (1820)$$ Ξ ( 1820 ) states, one around 1824 MeV and narrow, and another one around 1875 MeV and wide. The phase space for $$\bar{K}^0 \Sigma ^{*-}$$ K ¯ 0 Σ ∗ - production reduces the effect of the lower mass resonance, magnifying the effect of the higher mass resonance that shows clearly over the phase space. The estimated rate of the production is bigger than the one of the $$\psi (3686) \rightarrow \bar{\Xi }^+ K^- \Lambda $$ ψ ( 3686 ) → Ξ ¯ + K - Λ reaction, where a clear peak for $$\Xi (1820)$$ Ξ ( 1820 ) was observed by the BESIII collaboration, what makes the Beijing facility ideal to carry out the reaction proposed. |
| format | Article |
| id | doaj-art-7f3cddf0a472480faff824d67f4e9d17 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-7f3cddf0a472480faff824d67f4e9d172024-11-17T12:45:24ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-09-018491510.1140/epjc/s10052-024-13293-5On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decayMan-Yu Duan0Jing Song1Wei-Hong Liang2E. Oset3Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de PaternaSchool of Physics, Southeast UniversityDepartment of Physics, Guangxi Normal UniversitySchool of Physics, Southeast UniversityAbstract We propose the reaction $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - , with the $$\Sigma ^{*-}$$ Σ ∗ - decaying to $$\pi ^- \Lambda $$ π - Λ in order to show evidence for the existence of two $$\Xi (1820)$$ Ξ ( 1820 ) states, one around 1824 MeV and narrow, and another one around 1875 MeV and wide. The phase space for $$\bar{K}^0 \Sigma ^{*-}$$ K ¯ 0 Σ ∗ - production reduces the effect of the lower mass resonance, magnifying the effect of the higher mass resonance that shows clearly over the phase space. The estimated rate of the production is bigger than the one of the $$\psi (3686) \rightarrow \bar{\Xi }^+ K^- \Lambda $$ ψ ( 3686 ) → Ξ ¯ + K - Λ reaction, where a clear peak for $$\Xi (1820)$$ Ξ ( 1820 ) was observed by the BESIII collaboration, what makes the Beijing facility ideal to carry out the reaction proposed.https://doi.org/10.1140/epjc/s10052-024-13293-5 |
| spellingShingle | Man-Yu Duan Jing Song Wei-Hong Liang E. Oset On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay European Physical Journal C: Particles and Fields |
| title | On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay |
| title_full | On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay |
| title_fullStr | On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay |
| title_full_unstemmed | On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay |
| title_short | On the search for the two poles of the $$\Xi (1820)$$ Ξ ( 1820 ) in the $$\psi (3686) \rightarrow \bar{\Xi }^+ \bar{K}^0 \Sigma ^{*-}(\pi ^- \Lambda )$$ ψ ( 3686 ) → Ξ ¯ + K ¯ 0 Σ ∗ - ( π - Λ ) decay |
| title_sort | on the search for the two poles of the xi 1820 ξ 1820 in the psi 3686 rightarrow bar xi bar k 0 sigma pi lambda ψ 3686 ξ ¯ k ¯ 0 σ ∗ π λ decay |
| url | https://doi.org/10.1140/epjc/s10052-024-13293-5 |
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