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arXiv · 0807.0173

Transversity and Collins Fragmentation Functions: Towards a New Global Analysis

M. Anselmino·M. Boglione·U. D'Alesio·A. Kotzinian·S. Melis·F. Murgia·A. Prokudin·C. Turk
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Abstract

A new, preliminary global analysis of the experimental data on azimuthal asymmetries in SIDIS from HERMES and COMPASS collaborations, and in e+e- --> h_1 h_2 X processes from the BELLE collaboration, is performed. The new data allow for a more precise determination of the Collins fragmentation function and of the transversity distribution function for $u$ and $d$ quarks, in comparison with the results of our previous analysis. Estimates for the single spin asymmetry A_UT^{\sin(\phi_h + \phi_S)} at JLab and COMPASS, operating on a transversely polarized proton target, are presented.

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M. Anselmino, M. Boglione, U. D'Alesio, A. Kotzinian, S. Melis, F. Murgia, A. Prokudin, C. Turk. 2008-07-01. Transversity and Collins Fragmentation Functions: Towards a New Global Analysis. https://doi.org/10.1063/1.3215690

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