| Title | Confirmation of a charged charmoniumlike state Z(c)(3885)(-/+) in e(+)e(-) -> pi(+/-) (D(D)over-bar*)(-/+) with double D tag |
| Authors | Ablikim, M. Achasov, M. N. Ai, X. C. Albayrak, O. Albrecht, M. Ambrose, D. J. Amoroso, A. An, F. F. An, Q. Bai, J. Z. Ferroli, R. Baldini Ban, Y. Bennett, D. W. Bennett, J. V. Bertani, M. Bettoni, D. Bian, J. M. Bianchi, F. Boger, E. Boyko, I. Briere, R. A. Cai, H. Cai, X. Cakir, O. Calcaterra, A. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Cheng, H. P. Chu, X. K. Cibinetto, G. Dai, H. L. Dai, J. P. Dbeyssi, A. Dedovich, D. Deng, Z. Y. Denig, A. Denysenko, I. Destefanis, M. De Mori, F. Ding, Y. Do |
| Affiliation | Inst High Energy Phys, Beijing 100049, Peoples R China. Beihang Univ, Beijing 100191, Peoples R China. Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China. Ruhr Univ Bochum, D-44780 Bochum, Germany. Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. Cent China Normal Univ, Wuhan 430079, Peoples R China. China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China. COMSATS Inst Informat Technol, Lahore 54000, Pakistan. GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia. 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. Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China. Helmholtz Inst Mainz, D-55099 Mainz, Germany. Henan Normal Univ, Xinxiang 453007, Peoples R China. Henan Univ Sci & Technol, Luoyang 471003, Peoples R China. Huangshan Coll, Huangshan 245000, Peoples R China. Hunan Univ, Changsha 410082, Hunan, Peoples R China. Indiana Univ, Bloomington, IN 47405 USA. Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. Ist Nazl Fis Nucl, I-06100 Perugia, Italy. Univ Perugia, I-06100 Perugia, Italy. INFN Sez Ferrara, I-44122 Ferrara, Italy. Univ Ferrara, I-44122 Ferrara, Italy. Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany. Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia. Univ Giessen, Inst Phys 2, D-35392 Giessen, Germany. Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands. Lanzhou Univ, Lanzhou 730000, Peoples R China. Liaoning Univ, Shenyang 110036, Peoples R China. Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China. Nanjing Univ, Nanjing 210093, Jiangsu, 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. Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China. Shanxi Univ, Taiyuan 030006, Peoples R China. Sichuan Univ, Chengdu 610064, Peoples R China. Soochow Univ, Suzhou 215006, Peoples R China. Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China. Tsinghua Univ, Beijing 100084, Peoples R China. Istanbul Aydin Univ, TR-34295 Istanbul, Turkey. Dogus Univ, TR-34722 Istanbul, Turkey. Uludag Univ, TR-16059 Bursa, Turkey. Near East Univ, North Cyprus 10, Mersin, Turkey. Univ Chinese Acad Sci, Beijing 100049, Peoples R China. Univ Hawaii, Honolulu, HI 96822 USA. Univ Minnesota, Minneapolis, MN 55455 USA. Univ Rochester, Rochester, NY 14627 USA. Univ Sci & Technol Liaoning, Anshan 114051, Peoples R China. Univ Sci & Technol China, Anhua 230026, Peoples R China. Univ South China, Hengyang 421001, Peoples R China. Univ Punjab, Lahore 54590, Pakistan. Univ Turin, I-10125 Turin, Italy. Univ Piemonte Orientale, I-15121 Alessandria, Italy. Ist Nazl Fis Nucl, I-10125 Turin, Italy. Uppsala Univ, S-75120 Uppsala, Sweden. Wuhan Univ, Wuhan 430072, Peoples R China. Zhejiang Univ, Hangzhou 310027, Peoples R China. Zhengzhou Univ, Zhengzhou 450001, Peoples R China. State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China. Ankara Univ, TR-06100 Ankara, Turkey. Bogazici Univ, TR-34342 Istanbul, Turkey. Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia. Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia. Novosibirsk State Univ, Novosibirsk 630090, Russia. PNPI, NRC Kurchatov Inst, Gatchina 188300, Russia. Univ Texas Dallas, Richardson, TX 75083 USA. Istanbul Arel Univ, TR-34295 Istanbul, Turkey. |
| Keywords | DECAY Y(4260) BESIII |
| Issue Date | 2015 |
| Publisher | PHYSICAL REVIEW D |
| Citation | PHYSICAL REVIEW D.2015,92,(9). |
| Abstract | We present a study of the process e(+)e(-) -> pi(+/-) (D (D) over bar*)(-/+) using data samples of 1092 pb(-1) at root s = 4.23 GeV and 826 pb(-1) at root s = 4.26 GeV collected with the BESIII detector at the BEPCII storage ring. With full reconstruction of the D meson pair and the bachelor pi(+) in the final state, we confirm the existence of the charged structure Z(c) (3885)(-/+) in the (D (D) over bar*)(-/+) system in the two isospin processes e(+)e(-) -> pi(+DD)-D-0*(-) and e(+)e(-) -> pi+D-D*(0). By performing a simultaneous fit, the statistical significance of Zc(3885)(-/+) signal is determined to be greater than 10 sigma, and its pole mass and width are measured to be M-pole = (3881.7 +/- 1.6(stat) +/- 1.6(syst)) MeV/c(2) and Gamma(pole) = (26.6 +/- 2.0(stat) +/- 2.1(syst)) MeV, respectively. The Born cross section times the (D (D) over bar*)(-/+) branching fraction (sigma(e(+)e(-) -> pi(+/-)Z(c)(3885)(-/+)) x Br(Z(c)(3885)(-/+) -> (D (D) over bar*)(-/+) )) is measured to be (141.6 +/- 7.9(stat) +/- 12.3(syst)) pb at root s = 4.23 GeV and (108.4 +/- 6.9(stat) +/- 8.8(syst)) pb at root s = 4.26 GeV. The polar angular distribution of the pi(+) - Z(c)(3885)(-/+) system is consistent with the expectation of a quantum number assignment of J(P) = 1(+) for Z(c)(3885)(-/+). |
| URI | http://hdl.handle.net/20.500.11897/439249 |
| ISSN | 1550-7998 |
| DOI | 10.1103/PhysRevD.92.092006 |
| Indexed | SCI(E) |
| Appears in Collections: | 待认领 |
