Asymmetries involving dihadron fragmentation functions: from DIS to e+e- annihilation

Abstract

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.

11 pages, RevTeX style, 6 figures in eps format

References in corpus (4)

• Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at \sqrt{s} = 10.58 GeV
• Angular dependences in inclusive two-hadron production at BELLE
• Collins fragmentation function for pions and kaons in a spectator model
• Evolution equations for extended dihadron fragmentation functions