Speaker
Description
Fragmentation Function (FF) plays a crucial role in describing the hadronization process, which is usually studied by investigating the inclusive production of final-state hadrons of interest. We report the measurements of normalized differential inclusive production cross, of neutral mesons $π^0$, $K_S^0$, η and charged particles $π^±$ and $K^±$, as a function of the hadron momentum at the BESIII energy region (2~5 GeV). The results, with relatively high precision and wide energy-fraction coverage, deviate from several theoretical calculations based on existing fragmentation functions. Moreover, the comparison of the production cross sections between neutral and charged π and K, at the same energy point, will be presented for a dedicated scrutiny of iso-spin symmetry.
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