Abstract
The QCD factorization expression has been revisited to the sum of two spin-dependent structure functions ĝ1 and ĝ2 for e++e-→B+X. We find that there exist some spurious quark-mass contributions in an expression derived earlier by Lu, Li and Hu. Their removal guarantees that the measurements of ĝ1 and ĝ2 indeed construct a determination of twist-three transverse spin-dependent fragmentation function, ĝT, in the case of inclusive Λ production in electron–positron annihilation.
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