The newly observed open-charm states in quark model

Abstract

Comparing the measured properties of the newly observed open-charm states D(2550), D(2600), D(2750), D(2760), D_{s1}(2710), D_{sJ}(2860), and D_{sJ}(3040) with our predicted spectroscopy and strong decays in a constituent quark model, we find that: (1) the $D(2{}^1{S}_0)$ assignment to D(2550) remains open for its too broad width determined by experiment; (2) the D(2600) and $D_{s1}(2710)$ can be identified as the $2{}^3{S}_1$-$1{}^3{D}_1$ mixtures; (3) if the D(2760) and D(2750) are indeed the same resonance, they would be the $D(1{}^3{D}_3)$; otherwise, they could be assigned as the $D(1{}^3{D}_3)$ and $D_2^{\prime }(1D)$, respectively; (4) the $D_{sJ}(2860)$ could be either the $D_{s1}(2710)$'s partner or the $D_s(1{}^3{D}_3)$; and (5) both the $D_{s1}(2P)$ and $D_{s1}^{\prime }(2P)$ interpretations for the $D_{sJ}(3040)$ seem likely. The $E1$ and $M1$ radiative decays of these sates are also studied. Further experimental efforts are needed to test the present quarkonium assignments for these new open-charm states.

26 pages,7 figures, journal version

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• D Pi scattering and D meson resonances from lattice QCD
• All-heavy tetraquarks
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• Higher radial and orbital excitations in the charmed meson family
• The excited bottom-charmed mesons in a nonrelativistic quark model
• Hadron loops effect on mass shifts of the charmed and charmed-strange spectra
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• Understanding the charmed states recently observed by the LHCb and BaBar Collaborations in the quark model
• Analysis of strong decays of the charmed mesons $D_J(2580)$, $D_J^{\ast }(2650)$, $D_J(2740)$, $D_J^{\ast }(2760)$, $D_J(3000)$, $D_J^{\ast }(3000)$
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
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• Mass spectra and decay properties of $D_s$ Meson in a relativistic Dirac formalism
• Fully-strange tetraquark $ss\bar{s}\bar{s}$ spectrum and possible experimental evidence
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Mass spectra and decay properties of $D$ Meson in a relativistic Dirac formalism
• Systematic analysis of the $D_J(2580)$, $D_J^{\ast }(2650)$, $D_J(2740)$, $D_J^{\ast }(2760)$, $D_J(3000)$ and $D_J^{\ast }(3000)$ in $D$ meson family
• Canonical interpretation of the $X(4140)$ state within the ${}^3{P}_0$ model
• Combined study of $2S$ and $1D$ open-charm mesons with natural spin-parity
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• A possible explanation of the threshold enhancement in the process $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$
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• The possible members of the $5^1{S}_0$ meson nonet
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• Angular momentum coefficients for meson strong decay and unquenched quark models
• Mixing angle and decay constants of $J^P=1^{+}$ heavy-light mesons
• Study of the excited $1^{-}$ charm and charm-strange mesons
• Unified covariant treatment of hyperfine splitting for heavy and light mesons
• Strong decays of $D_J(3000)$ and $D_{sJ}(3040)$
• Analysis of the $X(3842)$ as a D-wave charmonium meson
• A new decay mode of higher charmonium
• Strong decays of the charmed mesons $D_1^{\ast }(2680)$, $D_3^{\ast }(2760)$, $D_2^{\ast }(3000)$
• The assignments of the $B_s$ mesons within the screened potential model and ${}^3{P}_0$ model
• Approximate degeneracy of heavy-light mesons with the same $L$
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• QCD string in excited heavy-light mesons and heavy-quark hybrids
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• Dynamical mixing between $2^3{S}_1$ and $1^3{D}_1$ charmed mesons
• The possible assignments of the scalar $K_0^{\ast }(1950)$ and $K_0^{\ast }(2130)$ within the ${}^3{P}_0$ model
• The newly observed state $D_{s0}(2590{)}^{+}$
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• X(1870) and ${\eta }_2(1870)$: Which can be assigned as a hybrid state?
• Study of 1D stranged-charm meson family using HQET