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Study on Strong Decays of $D_{sJ}(2632)$

Hong-Wei Ke·Yan-Ming Yu·Yi-Bing Ding·Xin-Heng Guo·Hong-Ying Jin·Xue-Qian Li·Peng-Nian Shen·Guo-Li Wang
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Abstract

The resonance $D_{sJ}(2632)$ observed by SELEX, has attracted great interests and meanwhile brought up serious dispute. Its spin-parity, so far has not finally determined and if it exists, its quark-structure might be exotic. Following the previous literature where $D_{sJ}(2632)$ is assumed to be a radial-excited state of $1^-$, we consider the possibilities that it might be a $q\bar q$ ground state of $2^+$ or the first radial-excited state of $0^+$ $D_{sJ}(2317)$ and re-calculate its strong decay widths in terms of the Bethe-Salpeter equation. Our results indicate that there still is a sharp discrepancy between the theoretical evaluation and data.

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Hong-Wei Ke, Yan-Ming Yu, Yi-Bing Ding, Xin-Heng Guo, Hong-Ying Jin, Xue-Qian Li, Peng-Nian Shen, Guo-Li Wang. 2006-03-16. Study on Strong Decays of $D_{sJ}(2632)$. https://arxiv.org/abs/hep-ph/0603117

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