Tue·Aug 24, 2004Tuesday·August 24, 2004

1. 01*

   Possible Interpretations of $D_{sJ}^{+}(2632)$ If It Really Exists

   Yuan-Ben Dai🇨🇳 · Chun Liu🇨🇳 · Y.-R. Liu🇨🇳 · Shi-Lin Zhu🇨🇳

   We analyze various possible interpretations of the narrow state $D_{sJ}^{+}(2632)$ observed by SELEX Collaboration recently, which lies above threshold and has abnormal decay pattern. These interpretations include: (1) several versions of tetraquarks; (2) conventional $c\bar{s}$ meson such as the first radial excitation of $D_s(2112)$ with abnormally large SU(3) symmetry breaking; (3) conventional $c\bar{s}$ meson with abnormally large ${\eta }_1$ coupling; (4) heavy hybrid meson. We discuss the physical implications of each interpretation. For example, if the existence of $D_{sJ}^{+}(2632)$ is confirmed as the first radial excitation of $D_s(2112)$ by other experiments, it will be helpful to look for (1) its SU(3) flavor partners $D_J^{0,+}(2530)$; (2) its B-meson analogues $B_J^{0,+}(5840),B_{sJ}^{+}(5940)$; (3) S-wave two pion decay modes.

   ↳ hep-phhep-exhep-latnucl-thJHEP(2004)·14 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.