| Title | Branching fraction measurements of chi(c0) and chi(c2) to pi(0)pi(0) and eta eta |
| Authors | Ablikim, M. Achasov, M. N. An, L. An, Q. An, Z. H. Bai, J. Z. Ban, Y. Berger, N. Bian, J. M. Boyko, I. Briere, R. A. Bytev, V. Cai, X. Cao, G. F. Cao, X. X. Chang, J. F. Chelkov, G. Chen, G. Chen, H. S. Chen, J. C. Chen, L. P. Chen, M. L. Chen, P. Chen, S. J. Chen, Y. B. Chu, Y. P. Cronin-Hennessy, D. Dai, H. L. Dai, J. P. Dedovich, D. Deng, Z. Y. Denysenko, I. Destefanis, M. Ding, Y. Dong, L. Y. Dong, M. Y. Du, S. X. Duan, M. Y. Fang, J. Feng, C. Q. Fu, C. D. Fu, J. L. Gao, Y. Geng, C. Goetzen, K. Gong, W. |
| Affiliation | Inst High Energy Phys, Beijing 100049, Peoples R China. Ruhr Univ Bochum, D-44780 Bochum, Germany. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China. GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia. Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China. GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany. Guangxi Normal Univ, Guilin 541004, Peoples R China. Guangxi Univ, Nanning 530004, Peoples R China. Henan Normal Univ, Xinxiang 453007, Peoples R China. Huazhong Normal Univ, Wuhan 430079, Peoples R China. Hunan Univ, Changsha 410082, Peoples R China. Joint Inst Nucl Res, Dubna 141980, Russia. Liaoning Univ, Shenyang 110036, Peoples R China. Nanjing Normal Univ, Nanjing 210046, Peoples R China. Nanjing Univ, Nanjing 210093, Peoples R China. Nankai Univ, Tianjin 300071, Peoples R China. Peking Univ, Beijing 100871, Peoples R China. Seoul Natl Univ, Seoul 151747, South Korea. Shandong Univ, Jinan 250100, Peoples R China. Shanxi Univ, Taiyuan 030006, Peoples R China. Sichuan Univ, Chengdu 610064, Peoples R China. Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China. Chinese Univ Hong Kong, Shatin, Hong Kong, Peoples R China. Univ Hong Kong, Pokfulam, Hong Kong, Peoples R China. Univ Tokyo, Tokyo 1130033, Japan. Tsinghua Univ, Beijing 100084, Peoples R China. Univ Giessen, D-35392 Giessen, Germany. Univ Hawaii, Honolulu, HI 96822 USA. Univ Minnesota, Minneapolis, MN 55455 USA. Univ Sci & Technol China, Hefei 230026, Peoples R China. Univ Turin, Turin, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Univ Washington, Seattle, WA 98195 USA. Wuhan Univ, Wuhan 430072, Peoples R China. Zhejiang Univ, Hangzhou 310027, Zhejiang, Peoples R China. Zhengzhou Univ, Zhengzhou 450001, Peoples R China. Moscow Inst Phys & Technol, Moscow, Russia. PNPI, Gatchina, Russia. |
| Issue Date | 2010 |
| Publisher | physical review d |
| Citation | PHYSICAL REVIEW D.2010,81,(5). |
| Abstract | Using a sample of 1.06 x 10(8) psi' decays collected by the BESIII detector, chi(c0) and chi(c2) decays into pi(0)pi(0) and eta eta are studied. The branching fraction results are Br(chi(c0) -> pi(0)pi(0)) = (3.23 +/- 0.03 +/- 0.23 +/- 0.14) x 10(-3), Br(chi(c2) -> pi(0)pi(0)) = (8.8 +/- 0.2 +/- 0.6 +/- 0.4) x 10(-4), Br(chi(c0) -> eta eta) = (3.44 +/- 0.10 +/- 0.24 +/- 0.2) x 10(-3), and Br(chi(c2) -> eta eta) = (6.5 +/- 0.4 +/- 0.5 +/- 0.3) x 10(-4), where the uncertainties are statistical, systematic due to this measurement, and systematic due to the branching fractions of psi' -> gamma chi(cJ). The results provide information on the decay mechanism of chi(c) states into pseudoscalars. |
| URI | http://hdl.handle.net/20.500.11897/396061 |
| ISSN | 1550-7998 |
| DOI | 10.1103/PhysRevD.81.052005 |
| Indexed | SCI(E) |
| Appears in Collections: | 待认领 |
