Comment on the Nature of the $D_{s1}^{\ast }(2710)$ and $D_{sJ}^{\ast }(2860)$ Mesons

Abstract

Two charm-strange mesons, the $D_{s1}^{\ast }(2710)$ and the $D_{sJ}^{\ast }(2860)$, have recently been observed by several experiments. There has been speculation in the literature that the $D_{s1}^{\ast }(2710)$ is the $2^3{S}_1(c\bar{s})$ state and the $D_{sJ}^{\ast }(2860)$ is the $1^3{D}_1(c\bar{s})$ state. In this paper we explore this and other explanations in the context of the relativized quark model and the pseudoscalar emission decay model. We conclude that the $D_{s1}^{\ast }(2710)$ is most likely the $1^3{D}_1(c\bar{s})$ state and the $D_{sJ}^{\ast }(2860)$ is most likely the $1^3{D}_3(c\bar{s})$ state with the $1D_2$ resonances also contributing to the observed signals and explaining the observed ratios of branching ratios to $D^{\ast }K$ and $DK$ final states. We point out that measuring the $D_{sJ}^{\ast }(2860)$ spin can support or eliminate this explanation and that there are six excited $D_s$ states in this mass region; the $2^3{S}_1$, $2^1{S}_0$, $1^3{D}_1$, $1^3{D}_3$ and two $1D_2$ states. Observing some of the missing states would help confirm the nature of the $D_{s1}^{\ast }(2710)$ and the $D_{sJ}^{\ast }(2860)$ states.

8 pages, 2 figures

References in corpus (12)

• The Exotic XYZ Charmonium-like Mesons
• $D_{sJ}(2860)$ and $D_{sJ}(2715)$
• Strong decays of heavy-light mesons in a chiral quark model
• The newly observed open-charm states in quark model
• Canonical Interpretation of the D_{sJ}(2860) and D_{sJ}(2690)
• $D_{sJ}(2860)$ resonance and the $s_{\ell }^P={\frac{5}{2}}^{-}$ $c\bar{s}$ ($c\bar{q}$) doublet
• D_{sJ}(2860) as the first radial excitation of the D_{s0}^*(2317)
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
• Identifying $D_{sJ}(2700)$ through its decay modes
• Possible 2S and 1D charmed and charmed-strange mesons
• Interpretation of $D_{sJ}(2632{)}^{+}$, $D_{s1}(2700{)}^{\pm }$, $D_{sJ}^{\star }(2860{)}^{+}$ and $D_{sJ}(3040{)}^{+}$
• Potential model calculations and predictions for $\mathbf{c}\bar{\mathbf{s}}$ quarkonia

Cited by in corpus (21)

• Properties of Excited Charm and Charm-Strange Mesons
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• Charmed-strange mesons revisited: mass spectra and strong decays
• Higher radial and orbital excitations in the charmed meson family
• Strong decays of higher excited heavy-light mesons in a chiral quark model
• The $D_{sJ}^{\ast }(2860)$ Mesons as Excited D-wave $c\bar{s}$ States
• Dalitz plot analyses of $B^0\to D^{-}{D}^0{K}^{+}$ and $B^{+}\to {\overline{D}}^0{D}^0{K}^{+}$ decays
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Combined study of $2S$ and $1D$ open-charm mesons with natural spin-parity
• $D_{s3}^{\ast }(2860)$ and $D_{s1}^{\ast }(2860)$ as the 1D $c\bar{s}$ states
• Regge-like spectra of excited singly heavy mesons
• Constructing new pseudoscalar meson nonets with the observed $X(2100)$, $X(2500)$, and $\eta (2225)$
• Study of $D_{sJ}^{(\ast )+}$ mesons decaying to $D^{\ast +}{K}_{\mathrm{S}}^0$ and $D^{\ast 0}{K}^{+}$ final states
• Angular momentum coefficients for meson strong decay and unquenched quark models
• Study of the excited $1^{-}$ charm and charm-strange mesons
• The weak $B$, $B_s$ and $B_c$ decays to radially excited states
• Analysis of the $D_{s3}^{\ast }(2860)$ as a D-wave $c\bar{s}$ meson with QCD sum rules
• Study on radiative decays of $D_{sJ}^{\ast }(2860)$ and $D_{s1}^{\ast }(2710)$ into $D_s$ by means of LFQM
• Hadronic decays of the highly excited $2D$ $D_s$ resonances
• Analysis of the strong decays $D_{s3}^{\ast }(2860)\to DK$, $D^{\ast }K$ with QCD sum rules
• Study of 1D stranged-charm meson family using HQET