Supported by the National Natural Science Foundation of China under Grant Nos 90103020 and 10475088, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KC2-SW-N02, and the Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator.
Quark-hadron duality of three proton spin structure functions g1, g2 and gT are discussed simultaneously. It is found that the onsets of the quark-hadron dualities of g1^p, g2^p and gT^p. are similar and they are expe...