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Model-independent Study of Electric Dipole Transitions in Quarkonium

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arxiv 1203.3020 v1 pith:MI6B7MAE submitted 2012-03-14 hep-ph

Nora Brambilla , Piotr Pietrulewicz , Antonio Vairo This is my paper · ORCID
classification hep-ph
keywords dipoleelectricmodel-independentpotentialquarkoniumtransitionscalculationscomplements
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The paper contains a systematic, model-independent treatment of electric dipole (E1) transitions in heavy quarkonium. Within the effective field theory framework of potential non-relativistic QCD (pNRQCD), we derive the complete set of relativistic corrections of relative order v^2 both for weakly and strongly-coupled quarkonia. The result supports and complements former results from potential model calculations.

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  1. A tale of Bethe logarithms: leptonic widths of $\chi_{cJ}$ and Lamb shift

    hep-ph 2024-11 conditional novelty 7.0 of 10

    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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