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Observation of a chi'_(c2) candidate in gamma gamma --> D Dbar production at Belle

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arxiv hep-ex/0512035 v2 pith:KOI2MBBH submitted 2005-12-15 hep-ex

The Belle Collaboration: S.Uehara , et al This is my paper · ORCID
classification hep-ex
keywords gammastatecandidatecharmoniumdbarproductionangularbelle
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We report on a search for new resonant states in the process gamma gamma --> D Dbar. A candidate C-even charmonium state is observed in the vicinity of 3.93 GeV/c^2. The production rate and the angular distribution in the gamma gamma center-of-mass frame suggest that this state is the previously unobserved chi'_(c2), the 2^3P_2 charmonium state.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Hidden-Charm Tetraquarks in a Mixture Model: Coupled-Channel Analysis with $c\bar{c}$ and Hadronic Molecular Components

    hep-ph 2025-05 conditional novelty 5.0 of 10

    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.

  2. A Unified Study of Hidden-Charm and Hidden-Bottom Mesons

    hep-ph 2026-07 conditional novelty 4.0 of 10

    A common screened-potential and QCD sum-rule framework yields consistent spectra, E1/M1 widths, Regge slopes, decay constants and finite-spectrum thermal indicators for c¯c and b¯b mesons.

  3. Unquenched Charmonium and Beyond

    hep-ph 2026-02 conditional novelty 2.0 of 10

    This Lanzhou-group review argues that coupled-channel (unquenched) effects, not exotic constituents, are the common thread explaining charmonium anomalies from the rho-pi puzzle to the Y-problem states.

  4. Heavy quarkonia and new hadrons with two heavy quarks

    hep-ex 2025-08 accept novelty 1.0 of 10

    A literature review that compiles the current experimental landscape of charmonium, bottomonium, and XYZ exotic states; it contains no new measurements, derivations, or predictions.

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