Hidden and open heavy-flavor hadronic states

Abstract

We discuss the stability of hidden and open heavy-flavor hadronic states made of either two or three mesons. References are made in passing to studies regarding two and three-body systems containing baryons. We perform a comparative study analyzing the results in terms of quark and hadron degrees of freedom. Compact and molecular states are found to exist in very specific situations. We estimate the decay width for the different scenarios: weak decays for bound states by the strong interaction, and strong decays for hadronic resonances above a decay threshold. The experimental observation of narrow hadrons lying well above their lowest decay threshold is theoretically justified.

arXiv commentPaper commissioned to Prof. H. Garcilazo for the special issue "New Trends in Hadron Physics: a Few-Body Perspective" of Few Body Systems. 20 pages, 13 figures

References in corpus (52)

• The hidden-charm pentaquark and tetraquark states
• Multiquark Resonances
• Pentaquark and Tetraquark states
• Heavy-Quark QCD Exotica
• Exotics: Heavy Pentaquarks and Tetraquarks
• Discovery of doubly-charmed Xi_{cc} baryon implies a stable (b b ubar dbar) tetraquark
• Heavy-quark symmetry implies stable heavy tetraquark mesons $Q_i{Q}_j{\bar{q}}_k{\bar{q}}_l$
• Low-energy Universality and the New Charmonium Resonance at 3870 MeV
• Lattice Prediction for Deeply Bound Doubly Heavy Tetraquarks
• Study of doubly heavy tetraquarks in Lattice QCD
• Exotic hadrons: review and perspectives
• $Z_b(10610{)}^{\pm }$ and $Z_b(10650{)}^{\pm }$ as the $B^{\ast }\bar{B}$ and $B^{\ast }{\bar{B}}^{\ast }$ molecular states
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model
• Charmed Tetraquarks Tcc and Tcs from Dynamical Lattice QCD Simulations
• Exotic tetraquark states with the $qq\bar{Q}\bar{Q}$ configuration
• BB interactions with static bottom quarks from Lattice QCD
• Exotic meson-meson molecules and compact four--quark states
• Exotic $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ states
• Stability of multiquarks in a simple string model
• String dynamics and metastability of fully-heavy tetraquarks
• QCD Inequalities
• Deriving the existence of $B{\bar{B}}^{\ast }$ bound states from the X(3872) and Heavy Quark Symmetry
• Few-body quark dynamics for doubly-heavy baryons and tetraquarks
• Issues and Opportunities in Exotic Hadrons
• The Effects of Charged Charm Mesons on the Line Shapes of the X(3872)
• Charmonium spectroscopy above thresholds
• Stability of tetrons
• Baryon resonances from chiral coupled-channel dynamics
• Spectroscopy, lifetime and decay modes of the $T_{bb}^{-}$ tetraquark
• $\Lambda NN$ and $\Sigma NN$ systems at threshold
• Weak decays of the axial-vector tetraquark $T_{bb;\bar{u}\bar{d}}^{-}$
• Exotic $bc\bar{q}\bar{q}$ four-quark states
• $\Lambda NN$ and $\Sigma NN$ systems at threshold: II. The effect of D waves
• Probabilities in nonorthogonal basis: Four--quark systems
• Stable heavy pentaquarks in constituent models
• Too many $X^{\prime }s$, $Y^{\prime }s$ and $Z^{\prime }s$?
• $N\bar{D}$ system: A challenge for $\bar{\mathrm{P}}$ANDA
• Beyond the Adiabatic Approximation: the impact of thresholds on the hadronic spectrum
• J=3/2 charmed hypertriton
• Model independent extraction of the pole and Breit-Wigner resonance parameters
• Molecular Interpretation of the Supercharmonium State Z(4475)
• Unraveling the pattern of the $XYZ$ mesons
• Model-independent resonance parameter extraction using the trace of K and T matrices
• Charmonium-nucleon interactions from the time-dependent HAL QCD method
• Displaced $B_c^{-}$ mesons as an inclusive signature of weakly decaying double beauty hadrons
• Determination of $J/\psi$ chromoelectric polarizability from lattice data
• $T_{bbb}$: a three $B-$meson bound state
• Tri-meson bound state $BB{B}^{\ast }$ via delocalized $\pi$~Bond
• Width of a two-body coupled-channel resonance
• Synchonisation of Resonances with Thresholds
• Hadronic resonances enhanced by thresholds
• Effect of thresholds on the width of three-body resonances

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• The $\mathbf{sQ}\bar{\mathbf{q}}\bar{\mathbf{q}}$ $(\mathbf{q}=\mathbf{u},\mathbf{d};\mathbf{Q}=\mathbf{c},\mathbf{b})$ tetraquarks in the chiral quark model
• Structure of open-flavour four-quark states in the charm and bottom region