Eur. Phys. J. C (2009) 64: 243-250
https://doi.org/10.1140/epjc/s10052-009-1157-1

Regular Article - Experimental Physics

Experimental studies of e ⁺ e ⁻→ some charmless processes containing K _S ⁰ at and 3.65 GeV

¹ Institute of High Energy Physics, Beijing, 100049, People’s Republic of China
² Guangxi University, Nanning, 530004, People’s Republic of China
³ Peking University, Beijing, 100871, People’s Republic of China
⁴ University of Science and Technology of China, Hefei, 230026, People’s Republic of China
⁵ Henan Normal University, Xinxiang, 453002, People’s Republic of China
⁶ Zhejiang University, Hangzhou, 310028, People’s Republic of China
⁸ Tsinghua University, Beijing, 100084, People’s Republic of China
⁹ Shandong University, Jinan, 250100, People’s Republic of China
¹¹ Nankai University, Tianjin, 300071, People’s Republic of China
¹² Sichuan University, Chengdu, 610064, People’s Republic of China
¹⁴ Huazhong Normal University, Wuhan, 430079, People’s Republic of China
¹⁵ Wuhan University, Wuhan, 430072, People’s Republic of China
¹⁷ Liaoning University, Shenyang, 110036, People’s Republic of China
¹⁸ Nanjing Normal University, Nanjing, 210097, People’s Republic of China
¹⁹ Guangxi Normal University, Guilin, 541004, People’s Republic of China
²⁰ China Center for Advanced Science and Technology (CCAST), Beijing, 100080, People’s Republic of China
²¹ Hunan University, Changsha, 410082, People’s Republic of China

Received: 9 June 2009
Revised: 19 August 2009
Published online: 30 September 2009

Abstract

We measure the observed cross sections for the charmless processes e ⁺ e ⁻→K _S ⁰ K ⁻ K ⁻ K ⁺ π ⁺+ c.c., K _S ⁰ K ⁻ π ⁺ η+c.c., K _S ⁰ K ⁻ π ⁺ π ⁺ π ⁻ η+c.c., K _S ⁰ K ⁻ K ⁻ K ⁺ π ⁺ η+c.c., K _S ⁰ K ⁻ K ⁻ K ⁺ π ⁺ π ⁰+c.c., K _S ⁰ K ⁻ ρ ⁺+c.c. and K _S ⁰ K ⁻ π ⁺ ρ ⁰+c.c. We also extract upper limits on the branching fractions for ψ(3770) decays into these final states at 90% C.L. Analyzed data samples correspond to 17.3 pb⁻¹ and 6.5 pb⁻¹ integrated luminosities registered, respectively, at and 3.65 GeV, with the BES-II detector at the BEPC collider.