Using the local operator product expansion, the authors derive a Wandzura-Wilczek-like relation and a Burkhardt-Cottingham-like sum rule linking the twist-3 tensor-polarized distribution f_LT to the twist-2 function f_1LL for spin-1 hadrons.
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Twist-2 relations for the twist-3 tensor-polarized distribution function $f_{LT}$ of a spin-1 hadron by the operator-product-expansion method
Using the local operator product expansion, the authors derive a Wandzura-Wilczek-like relation and a Burkhardt-Cottingham-like sum rule linking the twist-3 tensor-polarized distribution f_LT to the twist-2 function f_1LL for spin-1 hadrons.