Study of D(1285) → K+K-π0 decay and D(1285)- and E(1420)-mesons production in exclusive reactions, induced by π-- and K--mesons at 32.5 GeV/c

D(1285) and E(1420)-mesons production in charge-exchange reactions induced by π- and K--mesons at 32.5 GeV/c has been studied. The measured cross sections allowed one to derive limitations for the mixing angle in the axial-vector meson nonet. This means that E(1420)-meson consists mainly of strange quarks. The invariant mass distribution for the kaon pair in D(1285) → K+K-π0 decay with statistics by an order of magnitude higher than the available data was obtained. The differential spectrum dN/dmsub(Ksup(+)Ksub(-)) analysis carried out in the delta-dominance model shows that delta(980)-meson cannot be described as a Breit-Wigner resonance with small width. The effective width for delta-meson at the point of √s=1 GeV/c2 GITAsub(delta) is greater than 180 MeV/c2. It points to a strong coupling of delta-meson to hadrons