Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 latex pages, 11 figures, final version for publication, with references updated
Scientific paper
10.1140/epjc/s10052-009-1191-z
We analyze the left-right asymmetry in the semi-inclusive deep inelastic scattering (SIDIS) process without introducing any weighting functions. With the current theoretical understanding, we find that the Sivers effect plays a key role in our analysis. We use the latest parametrization of the Sivers and fragmentation functions to reanalyze the $\pi^\pm$ production process and find that the results are sensitive to the parametrization. We also extend our calculation on the $K^{\pm}$ production, which can help us know more about the Sivers distribution of the sea quarks and the unfavored fragmentation processes. HERMES kinematics with a proton target, COMPASS kinematics with a proton, deuteron, and neutron target (the information on the neutron target can be effectively extracted from the $^3$He target), and JLab kinematics (both 6 GeV and 12 GeV) with a proton and neutron target are considered in our paper.
Ma Bo-Qiang
Mao Ya-Jun
She Jun
Sun Bo
Zhang Bing
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