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Short Range Structure in the X(3872)
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abstract
It is proposed that the newly discovered X(3872) is a $J^{PC} = 1^{++}$ $D^0\bar D^{0*}$ hadronic resonance stabilized by admixtures of $\omega J/\psi$ and $\rho J/\psi$. A specific model of the state is constructed and tests of its internal structure are suggested via the predicted decay modes $D^0\bar D^0\pi^0$, $D^0\bar D^0\gamma$, $\pi^+\pi^- J/\psi$, and $\pi^+\pi^-\pi^0 J/\psi$.
Forward citations
Cited by 11 Pith papers
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A tale of Bethe logarithms: leptonic widths of $\chi_{cJ}$ and Lamb shift
The infrared divergence in chi_cJ to e+e- decays is canceled by adding the next-to-leading Fock component, yielding finite, scale-independent leptonic width predictions expressed through Bethe logarithms.
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Heavy meson chiral perturbation theory constraints on a charm-coupled GeV-scale QCD axion
A charm-only QCD axion model passes a heavy-meson EFT consistency check, with its tightest bound coming from σ-mediated B_s mixing.
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Short-range production of three bottom mesons
Leading-order predictions for three-body point production rates of B and B* meson systems are derived in short-range NREFT from two-body input alone.
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Hidden-Charm Tetraquarks in a Mixture Model: Coupled-Channel Analysis with $c\bar{c}$ and Hadronic Molecular Components
A coupled-channel mixture model fitted to the X(3872) and Z(3930) masses predicts the X(3860) at about 3867 MeV, dominated by the charmonium core.
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Investigating triply heavy tetraquark states through QCD sum rules
QCD sum rules with condensates up to dimension 9 predict triply heavy tetraquark masses of 5.4 to 6.2 GeV for charm systems and 14.9 to 15.7 GeV for bottom systems.
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Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
X(3872) is best described as a shallow D D* molecule in which one-pion exchange and a small charmonium core provide comparable attraction.
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Radiative decays of $X(3872)$ within $D{\bar D}^*$ molecular framework
Using nonrelativistic effective field theory, the X(3872) is treated as a D*D molecule to predict radiative decay widths to D D gamma, finding a strong neutral-over-charged hierarchy and quantifying D D rescattering effects.
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Probing the structure of $\chi_{c1}(3872)$: Heavy quark symmetries at work
Heavy-quark large-mass limit applied to E1 transitions of χ_c1(2P) yields decay rates that match LHCb measurements for χ_c1(3872) under the 2P assignment.
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Investigating the two-pion exchange of the double charm $DD^*$ chiral interactions and $T_{cc}$
In this chiral EFT calculation the I=0 DD* two-pion-exchange potential is repulsive, and its near-cancellation with attractive contact and one-pion terms provides the weak binding of Tcc.
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The charming case of $X(3872)$ and $\chi_{c1}(2P)$
The radiative decay ratio R(X(3872)) = B(X(3872) to psi(2S) gamma)/B(X(3872) to J/psi gamma) is predicted to be 1.7 ± 0.3, matching the LHCb value 1.67, supporting the chi_c1(2P) charmonium assignment.
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Radiative decays of hadronic molecules: From confusion to inspiration
Radiative decays of hadronic molecules require careful treatment of scale hierarchies to resolve interpretive confusions, as demonstrated by reviewing decay types and instructive examples.
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