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We present new functional form of pion and kaon fragmentation functions up to next-to-leading
order obtained through a global fit to single-inclusive electron-positron annihilation data and also
employ, the semi-inclusive deep inelastic scattering asymmetry data from HERMES and COMPASS to determine FFs. In this analysis we consider the impression of semi-inclusive deep inelastic scat-tering asymmetry data on the fragmentation functions, where the produced hadrons of different electric charge are identified. We break symmetry assumption between quark and anti-quark frag-
mentation functions for favored partons by using the asymmetry data. The results of our analysis
are in good agreement with electron-positron annihilation data and also with all the semi-inclusive
deep inelastic scattering asymmetry data. Also we apply the obtained fragmentation functions to predict the scaled-energy distribution of +/K+ inclusively produced in top-quark decays at next-to-leading order using the zero-mass variable-flavor-number scheme exploiting the universality and scaling violations of fragmentation functions.
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