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Quarkonia and their transitions

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arxiv hep-ph/0701208 v3 pith:A6DIY6UK submitted 2007-01-24 hep-ph hep-ex

classification hep-phhep-ex
keywords qqbarquarkoniatransitionsstatesannihilationantiquarkbeenbound
verification ladder T0 review T1 audit T2 compute T3 formal

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Valuable data on quarkonia (the bound states of a heavy quark Q=c,b and the corresponding antiquark) have recently been provided by a variety of sources, mainly e+ e- collisions, but also hadronic interactions. This permits a thorough updating of the experimental and theoretical status of electromagnetic and strong transitions in quarkonia. We discuss QQbar transitions to other QQbar states, with some reference to processes involving QQbar annihilation.

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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. Radiative decays $J/\psi,\,\psi(2S)\rightarrow\gamma\eta^{(\prime)}$ in perturbative QCD with relativistic corrections

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Order-q² relativistic corrections in pQCD roughly double J/ψ→γη(') rates and favor a smaller mixing angle, while ψ(2S) rates overshoot data and may require coherent ηc mixing.

  2. The ${\gamma^* \gamma^* \to \eta_c (1S,2S)}$ transition form factors for spacelike photons

    hep-ph 2019-08 conditional novelty 6.0 of 10

    The double-virtual gamma*gamma* to eta_c transition form factor is computed from light-front wave functions and is predicted to violate factorization strongly while depending only weakly on the asymmetry of the two ph...

  3. Principles and Possibilities for Bound States in Gauge Theory

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Temporal gauge fixing and Gauss' law yield an instantaneous confining potential for color-singlet q q-bar states when a non-vanishing boundary condition is imposed at infinity, enabling perturbative hadron calculation...

  4. 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.

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