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Higher-Twist Distribution Amplitudes of the K Meson in QCD
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Higher-Twist Distribution Amplitudes of the K Meson in QCD
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We present a systematic study of twist-3 and twist-4 light-cone distribution amplitudes of the K meson in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative input parameters are estimated from QCD sum rules and renormalons. As a by-product, we give a complete reanalysis of the twist-3 and -4 parameters of the pi-meson distribution amplitudes; some of the results differ from those usually quoted in the literature.
Forward citations
Cited by 4 Pith papers
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The Gravitational Form Factor of the Pion in Perturbative QCD with a Dilaton Interaction
Anomaly-induced dilaton-like corrections in the hard kernel significantly modify pion GFFs at large Q^{2} within a factorization approach using Sudakov resummation and a Gaussian TMD wave function.
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Radiative Decays of Vector Mesons with Light-Cone Sum Rules
Light-cone sum rules yield radiative decay widths for ground-state vector mesons that match data where available and exhibit a universal linear dependence on a function A(x) in log coordinates arising from decay-const...
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Radiative Decays of Vector Mesons with Light-Cone Sum Rules
LCSR calculations give M1 radiative widths for K*, D*, B*, D_s*, B_s*, and ψ(2S), matching K* data and yielding a fitted universal log-log scaling with A(2.1).
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Twist-3 contributions to $\gamma\gamma\to\pi^0\pi^0,\,K_S^0K_S^0$ in $k_T$ factorization
Twist-3 LCDA contributions in k_T factorization dominate twist-2 for neutral channels, bringing predictions closer to data while neutral-to-charged ratios remain flat unlike observations.
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