Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-06-19
Phys.Rev.D76:034004,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 latex pages, 6 figures, to appear in PRD
Scientific paper
10.1103/PhysRevD.76.034004
We use a new set of Collins functions to update a previous prediction on the azimuthal asymmetries of pion productions in semi-inclusive deep inelastic scattering (SIDIS) process on a transversely polarized nucleon target. We find that the calculated results can give a good explanation to the HERMES experiment with the new parametrization, and this can enrich our knowledge of the fragmentation process. Furthermore, with two different approaches of distribution and fragmentation functions, we present a prediction on the azimuthal asymmetries of pion and kaon productions at the kinematics region of the experiments E06010 and E06011 planned at Jefferson Lab (JLab). It is shown that the results are insensitive to the models for the pion case. However, the results for kaon production are sensitive to different approaches of distribution and fragmentation functions. This is helpful to clarify some points in the study of the azimuthal spin asymmetries and fragmentation functions in hadronization processes.
Huang Yang
Ma Bo-Qiang
She Jun
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