Measurements of the observed cross sections for e+e−→exclusive light hadrons containing KS0 meson at s=3.773 and 3.650 GeV

By analyzing the data sets of 17.3 pb−1 taken at s=3.773GeV and of 6.5 pb−1 taken at s=3.650GeV with the BES-II detector at the BEPC collider, we measure the observed cross sections for the exclusive light hadron final states of KS0K−π+, KS0K−π+π0, KS0K−π+π+π−, KS0K−π+π+π−π0, KS0K−π+π+π+π−π− and KS0K−π+π0π0 produced in e+e− annihilation at the two energy points. We set the upper limits on the observed cross sections and the branching fractions for ψ(3770) decay to these final states at 90% C.L.