Study of radially excited $D_s(2^1{S}_0)$ and $D_{sJ}^{+}(2632)$

Abstract

The $J^P=0^{-}$ radial excitation $D_s(2^1{S}_0)$ 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 $D^{\ast }K$ channel. $D_s(2650)$ can be produced from hadronic decays of higher excited resonances. In a ${}^3{P}_0$ 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 ${}^3{P}_0$ 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.

arXiv comment8 pages, 8 figures, RevTex

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Cited by in corpus (2)

• Mass spectra and strong decays of charmed and charmed-strange mesons
• The newly observed state $D_{s0}(2590{)}^{+}$