$D {sJ}^ (2632)$: An Excellent Candidate of Tetraquarks

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We analyze various possible interpretations of the narrow state $D {sJ}(2632)$ which lies 100 MeV above threshold. This interesting state decays mainly into $D s \eta$ instead of $D^0 K^+$. If this relative branching ratio is further confirmed by other experimental groups, we point out that the identification of $D {sJ}(2632)$ either as a $c\bar s$

Author: Y. -R. Liu; Y. -B. Dai; C. Liu; Shi-Lin Zhu

Source: https://archive.org/