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arXiv · 1701.05678

Study of radially excited $D_s(2^1S_0)$ and $D^+_{sJ}(2632)$

Yu Tian·Ze Zhao·Ailin Zhang
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Abstract

The $J^P=0^-$ radial excitation $D_s(2^1S_0)$ is anticipated to have mass $2650$ MeV (denoted with $D_s(2650)$) though it has not been observed. $D_s(2650)$ is anticipated to be observed in inclusive $e^+e^-$ and $pp$ collisions in $D^*K$ channel. $D_s(2650)$ can be produced from hadronic decays of higher excited resonances. In a $^3P_0$ model, hadronic production of $D_s(2650)$ has been studied, relevant decay widths have been estimated. The hadronic decays of $D_s(3P)$ have been explored in detail, and the dominant decay channels have been pointed out. Two hadronic decay channels of $D^+_{sJ}(2632)$ were observed by SELEX, but have not been observed by any other experiment. Hadronic decays of $D^+_{sJ}(2632)$ in different assignments have been explored in the $^3P_0$ model. In view of the hadronic decay manner of $D^+_{sJ}(2632)$ , we conclude that $D^+_{sJ}(2632)$ cannot be a conventional charmed strange $c\bar s$ meson.

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Yu Tian, Ze Zhao, Ailin Zhang. 2017-01-20. Study of radially excited $D_s(2^1S_0)$ and $D^+_{sJ}(2632)$. https://doi.org/10.1088/1674-1137%2F41%2F8%2F083107

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