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Hard Exclusive Production of Tensor Mesons
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Hard Exclusive Production of Tensor Mesons
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We point out that hard exclusive production of tensor mesons $f_2(1270)$ with helicity $\lambda=\pm 2$ is dominated by the gluon component in the meson wave function and can be used to determine gluon admixture in tensor mesons in a theoretically clean manner. We present a detailed analysis of the tensor meson distribution amplitudes and calculate the transition form factor $\gamma+\gamma^*\to f_2(1270)$ for one real and one virtual photon.
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