Observation of an isoscalar vector meson at ≃1650 MeV/c2 in the\(e^ + e^ - \to K\bar K\pi \) Equation>reaction

The\(e^ + e^ - \to K_s^0 K^ \pm \pi ^ \mp \) andK+K−π0 cross sections have been measured in the energy interval\(1350 \leqq \sqrt s \leqq 2400\) with the DM2 detector at DCI. The\(K_s^0 K^ \pm \pi ^ \mp \) cross section shows the contribution of an isoscalar vector meson at ≈1650 MeV/c2 in agreement with a previous experiment. The low statisticsK+K−π0 measurement is consistent with the above result.