Experimental studies of the π+π-π+π-π0, K+K-π+π-π0 and pp̄π+π-π0 final states produced in e+e- annihilation at $\sqrt{s}= 3.773$ and 3.650 GeV

We report measurements of the observed cross sections for e+e-→ωπ+π-, ωK+K-, ωpp, K+K-ρ0π0, K+K-ρ+π-+c.c., K*0K-π+π0+c.c., K*+K-π+π-+c.c., φπ+π-π0 and ΛΛπ0 at \(\sqrt{s}= 3.773\) and 3.650 GeV. Upper limits (90% C.L.) are given for observed cross sections and for ψ(3770) decay branching fractions for production of these final states. These measurements are made by analyzing the data sets of 17.3 pb-1 collected at \(\sqrt{s}=\)3.773 GeV and 6.5 pb-1 collected at \(\sqrt{s}=\)3.650 GeV with the BES-II detector at the BEPC collider.