$D_{sJ}^{+}(2632)$: An Excellent Candidate of Tetraquarks

Abstract

We analyze various possible interpretations of the narrow state $D_{sJ}(2632)$ which lies 100 MeV above threshold. This interesting state decays mainly into $D_s\eta$ instead of $D^0{K}^{+}$. If this relative branching ratio is further confirmed by other experimental groups, we point out that the identification of $D_{sJ}(2632)$ either as a $c\bar{s}$ state or more generally as a $\bar{3}$ state in the $SU(3{)}_F$ representation is probably problematic. Instead, such an anomalous decay pattern strongly indicates $D_{sJ}(2632)$ is a four quark state in the $SU(3{)}_F$ $15$ representation with the quark content $\frac{1}{2\sqrt{2}}(ds\bar{d}+sd\bar{d}+su\bar{u}+us\bar{u}-2ss\bar{s})\bar{c}$. We discuss its partners in the same multiplet, and the similar four-quark states composed of a bottom quark $B_{sJ}^0(5832)$. Experimental searches of other members especially those exotic ones are strongly called for.

References in corpus (10)

• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Chiral Multiplets of Heavy-Light Mesons
• Observation of the DsJ(2317) and DsJ(2457) in B decays
• B Decays as Spectroscope for Charmed Four-quark States
• Measurements of the $D_{sJ}$ resonance properties
• Understanding the $D_{sJ}^{+}(2317)$ and $D_{sJ}^{+}(2460)$ with Sum Rules in HQET
• Is the anomalous decay ratio of D_{sJ}(2632) due to isospin breaking?
• The masses and decay widths of heavy hybrid mesons
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 in the D_s^*+π^0 Final State, and Confirmation of the D_sJ^*(2317)

Cited by in corpus (20)

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• Interpreting the $X(5568)$
• Decoding the $X(5568)$ as a fully open-flavor $su\bar{b}\bar{d}$ tetraquark state
• $X(5568)$ and and its partner states
• Surveying exotic pentaquarks with the typical $QQqq\bar{q}$ configuration
• Triply heavy tetraquark states with the $QQ\bar{Q}\bar{q}$ configuration
• Is $D_{sJ}^{+}(2632)$ the first radial excitation of $D_s^{\ast }(2112)$?
• Regge Trajectories Analysis to DsJ(2317), DsJ(2460) and DsJ(2632) Mesons
• Baryonium, tetra-quark state and glue-ball in large N_c QCD
• Multichannel calculation for Ds* vector states and the Ds(2632) resonance
• Chiral SU(3) Quark Model Study of Tetraquark States: $cn\bar{n}\bar{s}/cs\bar{s}\bar{s}$
• Masses and Mixing of $cq\bar{q}\bar{q}$ Tetraquarks Using Glozman-Riska Hyperfine Interaction
• Possible Interpretations of $D_{sJ}^{+}(2632)$ If It Really Exists
• Tetraquark particle in the string model
• Triquark structure and isospin symmetry breaking in exotic Ds mesons
• The Possible $J^{PC}{I}^G=2^{++}{2}^{+}$ State X(1600)
• The newly observed state $D_{s0}(2590{)}^{+}$