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Rho meson distribution amplitudes from QCD sum rules with nonlocal condensates

The leading-twist distribution amplitude for the longitudinal rho-meson was studied using QCD Sum Rules with nonlocal condensates and a spectral density which includes next-to-leading order radiative corrections. The obtained profile is compared with results from standard QCD sum rules, lattice QCD, holographic QCD, a light-front quark model, and the instanton liquid model. Preliminary estimates for the first two moments of the transverse $ρ$-meson distribute amplitude are also given.

preprint2014arXivOpen access
A. V. PimikovS. V. MikhailovN. G. Stefanis
hep-ph
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A. V. PimikovS. V. MikhailovN. G. Stefanis

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