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Two-parton Light-cone Distribution Amplitudes of Tensor Mesons

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arxiv 1007.3541 v1 pith:EHRLDCEI submitted 2010-07-20 hep-ph

Hai-Yang Cheng , Yuji Koike , Kwei-Chou Yang This is my paper · ORCID
classification hep-ph
keywords amplitudesdistributiontensortwo-partonconstantsdecaygammalight-cone
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present a detailed study of the two-parton light-cone distribution amplitudes for $1\,^3P_2$ nonet tensor mesons. The asymptotic two-parton distribution amplitudes of twist-2 and twist-3 are given. The decay constants $f_T$ and $f_T^\bot$ defined by the matrices of non-local operators on the lightcone are estimated using the QCD sum rule techniques. We also study the decay constants for $f_2(1270)$ and $f_2^\prime(1525)$ based on the hypothesis of tensor meson dominance together with the data of $\Gamma(f_2\to \pi\pi)$ and $\Gamma(f'_2\to K\bar K)$ and find that the results are in accordance with the sum rule predictions.

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  1. Hadronic photon correction to $\gamma^{\ast} \gamma \to f_{2}(1270)$ at next-to-leading order

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Hadronic photon corrections to gamma* gamma -> f2(1270) are computed at NLO with NLL resummation, giving updated form factors that raise T0 toward Belle data.

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