Analyzing $$\Xi (1620)$$ Ξ(1620) in the molecule picture in the Bethe–Salpeter equation approach
Abstract In this work, we assume that the observed state $$\Xi (1620)$$ Ξ(1620) is a s-wave $$\Lambda {\bar{K}}$$ ΛK¯ or $$\Sigma {\bar{K}}$$ ΣK¯ bound state. Based on this molecule picture, we establish the Bethe–Salpeter equations for $$\Xi (1620)$$ Ξ(1620) in the ladder and instantaneous approxim...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-019-7135-3 |