Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-08-11
Eur.Phys.J.C30:207-212,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 Latex pages, 10 figures, to appear in EPJC
Scientific paper
10.1140/epjc/s2003-01282-5
The fragmentation functions of the pion with distinction between $D_{u}^{\pi^{+}}$, $D_{d}^{\pi^{+}}$, and $D_{s}^{\pi^{+}}$ are studied in the Field-Feynman recursive model, by taking into account the flavor structure in the excitation of quark-antiquark pairs by the initial quarks. The obtained analytical results are compatible with available empirical results. The framework is also extended to predict the fragmentation functions of the kaon with distinction between $D_{\bar{s}}^{K^{+}}(z)$, $D_{u}^{K^{+}}(z)$, $D_{s}^{K^{+}}(z)$, and $D_{d}^{K^{+}}(z)$. This work gives a significant modification of the original model, and the predictions can be tested by future experiments on the fragmentation functions of the kaon.
Hua Jing
Ma Bo-Qiang
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