Testing the doubly charged charm-strange tetraquarks

Abstract

The spectroscopic parameters and decay channels of the doubly charged scalar, pseudoscalar and axial-vector charm-strange tetraquarks $Z_{\overline{c}s}=[sd][\overline{u}\overline{c}]$ are explored within framework of the QCD sum rule. The masses and current couplings of these diquark-antidiquark states are calculated by means of two-point correlation functions and taking into account the vacuum condensates up to eight dimensions. To compute the strong couplings of $Z_{\overline{c}s}$ states with $D,D_s,D^{\ast },D_s^{\ast },D_{s1}(2460),D_{s0}^{\ast }(2317),\pi$ and $K$ mesons we use QCD light-cone sum rules and evaluate width of their $S$- and $P$-wave decays to a pair of negatively charged conventional mesons: For the scalar state $Z_{\overline{c}s}\to D_s\pi ,DK,D_{s1}(2460)\pi$, for the pseudoscalar state $Z_{\overline{c}s}\to D_s^{\ast }\pi ,D^{\ast }K,D_{s0}^{\ast }(2317)\pi ,$ and for the axial-vector state $Z_{\overline{c}s}\to D_s^{\ast }\pi ,D^{\ast }K,D_{s1}(2460)\pi$ decays are investigated. Obtained predictions for the spectroscopic parameters and decay widths of the $Z_{\overline{c}s}$ tetraquarks may be useful for experimental investigations of the doubly charged exotic hadrons.

14 Pages, 4 Figures and 3 Tables. To be published in EPJC

References in corpus (11)

• Multiquark Resonances
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Four-Quark Hadrons: an Updated Review
• Hybrid Mesons
• Search for structure in the $B_s^0{\pi }^{\pm }$ invariant mass spectrum
• Decay constants of the charmed vector mesons $D^{\ast }$ and $D_s^{\ast }$ from QCD sum rules
• Treating $Z_c(3900)$ and $Z(4430)$ as the ground-state and first radially excited tetraquarks
• Masses of tetraquarks with open charm and bottom
• Open-flavor charmed/bottom $sq\bar{q}\bar{Q}$ and $qq\bar{q}\bar{Q}$ tetraquark states
• $B_s{\pi }^{+}$ scattering and search for X(5568) with lattice QCD
• Open charm-bottom scalar tetraquarks and their strong decays

Cited by in corpus (12)

• Spectrum and rearrangement decays of tetraquark states with four different flavors
• Strong decays of $T_{c\bar{s}0}(2900{)}^{++/0}$ as a fully open-flavor tetraquark state
• An open charm tetraquark candidate: note on $X_0(2900)$
• The doubly charmed pseudoscalar tetraquarks $T_{cc;\bar{s}\bar{s}}^{++}$ and $T_{cc;\bar{d}\bar{s}}^{++}$
• Charmed-strange tetraquarks and their decays in a potential quark model
• On the structures of new scalar resonances $T_{cs0}^a(2900{)}^{++}$ and $T_{cs0}^a(2900{)}^0$
• Vector resonance $X_1(2900)$ and its structure
• Modeling the resonance $T_{cs0}^a(2900{)}^{++}$ as a hadronic molecule $D^{\ast +}{K}^{\ast +}$
• Color flux-tube nature of the states $T_{cs}(2900)$ and $T_{c\bar{s}}^a(2900)$
• Properties of ${\Sigma }_Q^{\ast }$, ${\Xi }_Q^{\ast }$ and ${\Omega }_Q^{\ast }$ heavy baryons in cold nuclear matter
• The new $a_1(1420)$ state: structure, mass and width
• Axial-vector and pseudoscalar tetraquarks $[ud][\bar{c}\bar{s}]$