Authors
Mt Ablikim, MN Achasov, XC Ai, O Albayrak, DJ Ambrose, FF An, Q An, JZ Bai, R Baldini Ferroli, Y Ban, J Becker, JV Bennett, M Bertani, JM Bian, E Boger, O Bondarenko, I Boyko, RA Briere, V Bytev, H Cai, X Cai, O Cakir, A Calcaterra, GF Cao, SA Cetin, JF Chang, G Chelkov, G Chen, HS Chen, JC Chen, ML Chen, SJ Chen, X Chen, YB Chen, HP Cheng, YP Chu, D Cronin-Hennessy, HL Dai, JP Dai, D Dedovich, ZY Deng, A Denig, I Denysenko, M Destefanis, WM Ding, Y Ding, LY Dong, MY Dong, SX Du, J Fang, SS Fang, L Fava, CQ Feng, P Friedel, CD Fu, JL Fu, O Fuks, Q Gao, Y Gao, C Geng, K Goetzen, WX Gong, W Gradl, M Greco, MH Gu, YT Gu, YH Guan, AQ Guo, LB Guo, T Guo, YP Guo, YL Han, FA Harris, KL He, M He, ZY He, T Held, YK Heng, ZL Hou, C Hu, HM Hu, JF Hu, T Hu, GM Huang, GS Huang, JS Huang, L Huang, XT Huang, Y Huang, YP Huang, T Hussain, CS Ji, Q Ji, QP Ji, XB Ji, XL Ji, LL Jiang, XS Jiang, JB Jiao, Z Jiao, DP Jin, S Jin, FF Jing, N Kalantar-Nayestanaki, M Kavatsyuk, B Kopf, M Kornicer, W Kühn, W Lai, JS Lange, M Lara, P Larin, M Leyhe, CH Li, Cheng Li, Cui Li, DM Li, F Li, G Li, HB Li, JC Li, K Li, Lei Li, QJ Li, SL Li, WD Li, WG Li, XL Li, XN Li, XQ Li, XR Li, ZB Li, H Liang, YF Liang, YT Liang, GR Liao, XT Liao, D Lin, BJ Liu, CL Liu, CX Liu, FH Liu, Fang Liu, Feng Liu, H Liu, HB Liu, HH Liu, HM Liu, HW Liu, JP Liu
Publication date
2013/6/21
Journal
Physical review letters
Volume
110
Issue
25
Pages
252001
Publisher
American Physical Society
Description
We study the process at a center-of-mass energy of 4.260 GeV using a data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be , consistent with the production of the . We observe a structure at around in the mass spectrum, which we refer to as the . If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the invariant mass spectrum, neglecting interference, results in a mass of and a width of . Its production ratio is measured to be R=(σ(e+e-→π±Zc(3900)∓→π+π-J/ψ)/σ(e+e-→π+π-J/ψ))=(21.5±3.3±7.5)%. In all measurements the first errors are statistical and the second are systematic.
Total citations
Scholar articles
M Ablikim, MN Achasov, XC Ai, O Albayrak… - Physical review letters, 2013
M Ablikim - Phys. Rev. Lett, 2013
M Ablikim, BESIII collaboration - Phys. Rev. Lett, 2013