Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-12-02
Phys.Rev.D79:034029,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, RevTeX style, 6 figures in eps format
Scientific paper
10.1103/PhysRevD.79.034029
Using a model calculation of dihadron fragmentation functions, we fit the spin asymmetry recently extracted by HERMES for the semi-inclusive pion pair production in deep-inelastic scattering on a transversely polarized proton target. By evolving the obtained dihadron fragmentation functions, we make predictions for the correlation of the angular distributions of two pion pairs produced in electron-positron annihilations at BELLE kinematics. Our study shows that the combination of two-hadron inclusive deep-inelastic scattering and electron-positron annihilation measurements can provide a valid alternative to Collins effect for the extraction of the quark transversity distribution in the nucleon.
Bacchetta Alessandro
Ceccopieri Federico Alberto
Mukherjee Asmita
Radici Marco
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