| Determination of the number of J/ψ events with J/ψ → inclusive decays |
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| 作者姓名： | M. Ablikim et al (BESⅢ collaboration) |
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| 作者单位： | Institute of High Energy Physics, Beijing 100049, China |
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| 基金项目： | Supported by Ministry of Science and Technology of China (2009CB825200);National Natural Science Foundation of China (NSFC) (10625524, 10821063, 10825524, 10835001, 10935007, 11125525);Joint Funds of National Natural Science Foundation of China (11079008, 11179007);Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program (KJCX2-YW-N29, KJCX2-YW-N45);100 Talents Program of CAS, Istituto Nazionale di Fisica Nucleare, Italy, U. S. Department of Energy (DE-FG02-04ER41291, DE-FG02-91ER40682, DE-FG02-94ER40823);U.S. National Science Foundation, University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, WCU Program of National Research Foundation of Korea (R32-2008-000-10155-0) |
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| 摘 要： | The number of J/ψ events collected with the BES0 detector at the BEPC/ from June 12 to July 28, 2009 is determined to be (225:3±2:8)×106 using J/ψ → inclusive events, where the uncertainty is the systematic error and the statistical one is negligible.
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| 关 键 词： | number of J/ψ events BES0 detector J/ψ → inclusive events |
| 收稿时间： | 2012-06-08 |
| 修稿时间： | 2012-07-03 |
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