Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons
Abstract We study dynamically generated $$a_0$$ a 0 resonances by interactions between vector mesons including their coupling to channels of pseudoscalar mesons within coupled-channel approach. Both vector and pseudoscalar mesons are considered as t-channel exchanged mesons for calculating interacti...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-10460-4 |
| _version_ | 1817970558379229184 |
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| author | Zheng-Li Wang Bing-Song Zou |
| author_facet | Zheng-Li Wang Bing-Song Zou |
| author_sort | Zheng-Li Wang |
| collection | DOAJ |
| description | Abstract We study dynamically generated $$a_0$$ a 0 resonances by interactions between vector mesons including their coupling to channels of pseudoscalar mesons within coupled-channel approach. Both vector and pseudoscalar mesons are considered as t-channel exchanged mesons for calculating interactions between vector mesons. Analogous to $$a_0(980)$$ a 0 ( 980 ) as a $$K{\bar{K}}-\pi \eta $$ K K ¯ - π η dynamically generated state, there is an $$a_0(1710)$$ a 0 ( 1710 ) as a coupled channel dynamically generated state near $$K^*\bar{K}^*$$ K ∗ K ¯ ∗ threshold. The channels involved are $$\rho \phi ,K^*\bar{K}^*,\rho \omega , K\bar{K},\pi \eta $$ ρ ϕ , K ∗ K ¯ ∗ , ρ ω , K K ¯ , π η . This $$a_0$$ a 0 mainly decays to $$\rho \omega $$ ρ ω , $$\pi \eta $$ π η and $$K\bar{K}$$ K K ¯ . This pole is much tied to the coupled channel effect. If we turn off either $$\rho \phi $$ ρ ϕ or $$K^*\bar{K}^*$$ K ∗ K ¯ ∗ , the pole disappears. In addition, it is found that $$a_0(1450)$$ a 0 ( 1450 ) may also be dynamically generated by $$\rho \omega $$ ρ ω interactions due to $$\pi $$ π and $$\eta $$ η exchange. |
| first_indexed | 2024-04-13T20:36:34Z |
| format | Article |
| id | doaj.art-d8c45c70fbae45aa8c5850f7aa6cd646 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-13T20:36:34Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-d8c45c70fbae45aa8c5850f7aa6cd6462022-12-22T02:31:02ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-06-018261710.1140/epjc/s10052-022-10460-4Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesonsZheng-Li Wang0Bing-Song Zou1CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of SciencesCAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of SciencesAbstract We study dynamically generated $$a_0$$ a 0 resonances by interactions between vector mesons including their coupling to channels of pseudoscalar mesons within coupled-channel approach. Both vector and pseudoscalar mesons are considered as t-channel exchanged mesons for calculating interactions between vector mesons. Analogous to $$a_0(980)$$ a 0 ( 980 ) as a $$K{\bar{K}}-\pi \eta $$ K K ¯ - π η dynamically generated state, there is an $$a_0(1710)$$ a 0 ( 1710 ) as a coupled channel dynamically generated state near $$K^*\bar{K}^*$$ K ∗ K ¯ ∗ threshold. The channels involved are $$\rho \phi ,K^*\bar{K}^*,\rho \omega , K\bar{K},\pi \eta $$ ρ ϕ , K ∗ K ¯ ∗ , ρ ω , K K ¯ , π η . This $$a_0$$ a 0 mainly decays to $$\rho \omega $$ ρ ω , $$\pi \eta $$ π η and $$K\bar{K}$$ K K ¯ . This pole is much tied to the coupled channel effect. If we turn off either $$\rho \phi $$ ρ ϕ or $$K^*\bar{K}^*$$ K ∗ K ¯ ∗ , the pole disappears. In addition, it is found that $$a_0(1450)$$ a 0 ( 1450 ) may also be dynamically generated by $$\rho \omega $$ ρ ω interactions due to $$\pi $$ π and $$\eta $$ η exchange.https://doi.org/10.1140/epjc/s10052-022-10460-4 |
| spellingShingle | Zheng-Li Wang Bing-Song Zou Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons European Physical Journal C: Particles and Fields |
| title | Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons |
| title_full | Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons |
| title_fullStr | Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons |
| title_full_unstemmed | Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons |
| title_short | Two dynamical generated $$a_0$$ a 0 resonances by interactions between vector mesons |
| title_sort | two dynamical generated a 0 a 0 resonances by interactions between vector mesons |
| url | https://doi.org/10.1140/epjc/s10052-022-10460-4 |
| work_keys_str_mv | AT zhengliwang twodynamicalgenerateda0a0resonancesbyinteractionsbetweenvectormesons AT bingsongzou twodynamicalgenerateda0a0resonancesbyinteractionsbetweenvectormesons |