Eur. Phys. J. C (2007) 52: 805-811
https://doi.org/10.1140/epjc/s10052-007-0438-9

Regular Article - Experimental Physics

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 and 3.650 GeV

¹ Institute of High Energy Physics, P.O.Box 918-1, Beijing, 100049, P.R. China
² China Center for Advanced Science and Technology (CCAST), Beijing, 100080, P.R. China
³ Guangxi Normal University, Guilin, 541004, P.R. China
⁴ Guangxi University, Nanning, 530004, P.R. China
⁵ Henan Normal University, Xinxiang, 453002, P.R. China
⁶ Huazhong Normal University, Wuhan, 430079, P.R. China
⁷ Hunan University, Changsha, 410082, P.R. China
⁸ Jinan University, Jinan, 250022, P.R. China
⁹ Liaoning University, Shenyang, 110036, P.R. China
¹⁰ Nanjing Normal University, Nanjing, 210097, P.R. China
¹¹ Nankai University, Tianjin, 300071, P.R. China
¹² Peking University, Beijing, 100871, P.R. China
¹³ Shandong University, Jinan, 250100, P.R. China
¹⁴ Sichuan University, Chengdu, 610064, P.R. China
¹⁵ Tsinghua University, Beijing, 100084, P.R. China
¹⁶ University of Science and Technology of China, Hefei, 230026, P.R. China
¹⁷ Wuhan University, Wuhan, 430072, P.R. China
¹⁸ Zhejiang University, Hangzhou, 310028, P.R. China
¹⁹ DESY, 22607, Hamburg, Germany
²⁰ Universite Paris XI, LAL-Bat. 208-BP34, 91898, ORSAY Cedex, France
²¹ Max-Plank-Institut fuer Physik, Foehringer Ring 6, 80805, Munich, Germany
²² University of Toronto, Toronto, M5S 1A7, Canada
²³ CERN, 1211, Geneva 23, Switzerland
²⁴ University of Michigan, Ann Arbor, MI, 48109, USA

^* e-mail: zhaomg@mail.ihep.ac.cn

Received: 12 September 2007
Revised: 22 September 2007
Published online: 17 October 2007

Abstract

We report measurements of the observed cross sections for e⁺e^-→ωπ⁺π^-, ωK⁺K^-, ωpp̄, 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 ΛΛ̄π⁰ at 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 3.773 GeV and 6.5 pb^-1 collected at 3.650 GeV with the BES-II detector at the BEPC collider.