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.
Keywords
Cite
@article{arxiv.0812.0611,
title = {Asymmetries involving dihadron fragmentation functions: from DIS to e+e- annihilation},
author = {Alessandro Bacchetta and Federico A. Ceccopieri and Asmita Mukherjee and Marco Radici},
journal= {arXiv preprint arXiv:0812.0611},
year = {2009}
}
Comments
11 pages, RevTeX style, 6 figures in eps format