Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100039, Peoples R China.
First observations of xc0, Xc1, and Xc2 decays to pi(+)pi(-) K-s(0) K-s(0) and K+ K- K-s(0) K-s(0), as well as Psi(2S) decay to pi(+)pi(-) K-s(0) K-s(0), are presented. The branching fractions of these decay channels are determined using 14 x 10(6) Psi(2S0 events collected at BESII/BEPC. The branching fractions of xc0,xc2 -> K-s(0) K-s(0) are measured with statistical precision. (c) 2005 Elsevier B.V. All rights reserved.