Search for Rare Decays of Charmed D Mesons

BES Collaboration

Chinese Physics C> 2006, Vol. 30> Issue(3) : 183-190

Search for Rare Decays of Charmed D Mesons

BES Collaboration

Institute of High Energy Physics, CAS, Beijing 100049, China1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026 , China2 Department of Physics, Shandong University, Jinan 250100, China3 Department of Physics, Zhejiang University, Hangzhou 310028, China4 School of Physics, Peking University, Beijing 100871, China5 Department of Particle Physics, Huazhong Normal University, Wuhan 430079, China6 China Center for Advanced Science and TechnologyCCAST, Beijing 100080, China7 College of Physics, Nankai University, Tianjin 300071, China8 College of Physics and Information Engineering, Henan Normal University, Xinxiang 453002, China9 College of Physics and Electronic Information, Wuhan University, Wuhan 430072, China10 Department of Applied Physics, Hunan University, Changsha 410082, China11 Department of Physics, Liaoning University, Shenyang 110036, China12 Department of Physics, Sichuan University, Chengdu 610064, China13 Center of High Energy Physics, Tsinghua University, Beijing 100084, China14 Department of Physics and Electronic Science, Guangxi Normal University, Guilin 541004, China15 Department of Physics, Nanjing Normal University, Nanjing 210097, China16 College of Physics Science and Technology, Guangxi University, Nanning 530004, China

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Abstract：
A search for flavor changing neutral current (FCNC) and lepton number violation (LNV) decays of charmed D mesons is performed using 33pb^－1data around Ψ(3770) collected by BESⅡ detector at BEPC. Four decay modes of D⁰(K⁰e⁺e^－,Φe⁺e^－,ρ⁰e⁺e^－ and K^*0e⁺e^－) and six decay modes of D⁺(K^－e⁺e⁺,K⁺e⁺e^－,π^－e⁺e⁺, π⁺e⁺e^－,K^*－e⁺e⁺ and K^*+e⁺e^－) are presented. No evidence is found for the above decays, therefore, the upper limits at 90% confidence level are set. The limits of two D⁺ decays modes,D⁺→K^*－e⁺e⁺和D⁺→K^*+e⁺e^－ have not been reported previously.

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BES Collaboration. Search for Rare Decays of Charmed D Mesons[J]. Chinese Physics C, 2006, 30(3): 183-190.

BES Collaboration. Search for Rare Decays of Charmed D Mesons[J]. Chinese Physics C, 2006, 30(3): 183-190. shu

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Received: 2005-06-03
Revised: 2005-08-02

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沈阳化工大学材料科学与工程学院沈阳 110142

Search for Rare Decays of Charmed D Mesons

Institute of High Energy Physics, CAS, Beijing 100049, China1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026 , China2 Department of Physics, Shandong University, Jinan 250100, China3 Department of Physics, Zhejiang University, Hangzhou 310028, China4 School of Physics, Peking University, Beijing 100871, China5 Department of Particle Physics, Huazhong Normal University, Wuhan 430079, China6 China Center for Advanced Science and TechnologyCCAST, Beijing 100080, China7 College of Physics, Nankai University, Tianjin 300071, China8 College of Physics and Information Engineering, Henan Normal University, Xinxiang 453002, China9 College of Physics and Electronic Information, Wuhan University, Wuhan 430072, China10 Department of Applied Physics, Hunan University, Changsha 410082, China11 Department of Physics, Liaoning University, Shenyang 110036, China12 Department of Physics, Sichuan University, Chengdu 610064, China13 Center of High Energy Physics, Tsinghua University, Beijing 100084, China14 Department of Physics and Electronic Science, Guangxi Normal University, Guilin 541004, China15 Department of Physics, Nanjing Normal University, Nanjing 210097, China16 College of Physics Science and Technology, Guangxi University, Nanning 530004, China

Received Date: 2005-06-03

Accepted Date: 2005-08-02

Available Online: 2006-03-05

Abstract: A search for flavor changing neutral current (FCNC) and lepton number violation (LNV) decays of charmed D mesons is performed using 33pb^－1data around Ψ(3770) collected by BESⅡ detector at BEPC. Four decay modes of D⁰(K⁰e⁺e^－,Φe⁺e^－,ρ⁰e⁺e^－ and K^*0e⁺e^－) and six decay modes of D⁺(K^－e⁺e⁺,K⁺e⁺e^－,π^－e⁺e⁺, π⁺e⁺e^－,K^*－e⁺e⁺ and K^*+e⁺e^－) are presented. No evidence is found for the above decays, therefore, the upper limits at 90% confidence level are set. The limits of two D⁺ decays modes,D⁺→K^*－e⁺e⁺和D⁺→K^*+e⁺e^－ have not been reported previously.

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