A multiquark description of the $D_{sJ}(2860)$ and $D_{sJ}(2700)$

Abstract

Within a theoretical framework that accounts for all open-charm mesons, including the $D_0^{\ast }(2308)$, the $D_{sJ}^{\ast }(2317)$ and the $D_{sJ}(2460)$, we analyze the structure and explore possible quantum number assignments for the $D_{sJ}(2860)$ and the $D_{sJ}(2700)$ mesons reported by BABAR and Belle Collaborations. The open-charm sector is properly described if considered as a combination of conventional quark-antiquark states and four--quark components. All negative parity and $2^{+}$ states can be understood in terms only of $q\bar{q}$ components, however the description of the $0^{+}$ and $1^{+}$ mesons is improved whenever the mixing between two-- and four--quarks configurations is included. We analyze all possible quantum number assignments for the $D_{sJ}(2860)$ in terms of both $c\bar{s}$ and $cn\bar{s}\bar{n}$ configurations. We discuss the role played by the electromagnetic and strong decay widths as basic tools to distinguish among them. The broad structure reported by BABAR near 2.7 GeV is also analyzed.

arXiv comment10 pages, 5 tables

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• A review of the open charm and open bottom systems
• Baryon spectroscopy
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• The newly observed open-charm states in quark model
• Newly observed D_{sJ}(3040) and the radial excitations of P-wave charmed-strange mesons
• More kaonic bound states and a comprehensive interpretation of the D_{sJ} states
• The mass spectra and decay properties of dimesonic states, using the Hellmann potential
• Implication of BaBar's new data on the $D_{s1}(2710)$ and $D_{sJ}(2860)$
• Tetraquark Spectroscopy: A Symmetry Analysis
• Mass spectra and decay properties of $D$ Meson in a relativistic Dirac formalism
• Heavy hadron spectroscopy: a quark model perspective
• $D_{s1}^{\ast }(2860)$ and $D_{s3}^{\ast }(2860)$: Candidates for $1D$ charmed-strange mesons
• Analysis of the $D_{s3}^{\ast }(2860)$ as a D-wave $c\bar{s}$ meson with QCD sum rules
• 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