Estimation of parameters of K-meson structure functions

On the basis of multiparton recombination model with the use of the Kuti-Weisskopf parametrization there have been analyzed the available experimental data on inclusive spectra of the vector and tensor mesons in the reactions K±p → MX (M=ρ, φ, K(890), K(1430) in the kaon fragmentation region at high energies (32-110 GeV/c) with the aim to extract the parameters of the K-meson structure functions. For the suppression factor of the kaon strange sea the value λs=0.18±0.01 is obtained. The kaon longitudinal momentum fraction carried away by nonstrange valence quarks and sea partons respectively are =0.17, =0.30 and =0.53. Estimates are obtained for the summary longitudinal momentum fractions carried away by nonstrange sea quark-antiquark pairs =0.23±0.06, strange sea quark-antiquark pairs =0.02±0.01 and gluons =0.28±0.09. 26 refs.; 4 figs.; 1 tab