New shapes of light-cone distributions of the transversely polarized ρ-mesons
نویسندگان
چکیده
Abstract The leading twist light-cone distributions for transversely polarized ρ-, ρand b1-mesons are re-analyzed in the framework of QCD sum rules with nonlocal condensates. Using different kinds of sum rules to obtain reliable predictions, we estimate the 2-, 4-, 6and 8-th moments for transversely polarized ρand ρ-meson distributions and re-estimate tensor couplings f ρ,ρ′,b1 . We stress that the results of standard sum rules also support our estimation of the second moment of the transversely polarized ρ-meson distribution. New models for light-cone distributions of these mesons are constructed. Phenomenological consequences from these distributions are briefly discussed. Our results are compared with those found by Ball and Braun (1996), and the latter is shown to be incomplete.
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