Abstract

Quark–hadron duality of three proton spin structure functions g1,g2 and gT are discussed simultaneously. It is found that theonsets of the quark–hadron dualities of g1p, g2p and gTp aresimilar and they are expected to be at about Q2~2 GeV2. Inaddition, our results show that the elastic peak remarkably breaks localquark–hadron duality.

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