Kaon Collins Fragmentation Function Access at Belle

Fragmentationfunctions(FFs) describe the formationoffinal state particlesfrom a partonicinitial state and are directly related to the intriguing QCD phenomenon of confinement. Precise knowledge of these functions is a key ingredient in accessing quantities such as the nucleon spin structure in semi-inclusive deep inelastic scattering and proton-proton collisions. However, fragmentation functions can currently not be determined from Quantum Chromodynamics first principles and have to be extracted from experimental data. The Belle experiment at KEK, Japan, provides a large data sample for high precision measurements of unpolarized and polarized fragmentation functions. Here, the preliminary results involving kaons for the Collins FF, that describes the correlation between the transverse polarization of the fragmenting quark and the outgoing direction of the produced hadron, are presented.