Observation of a charged charmoniumlike structure in e+ e- → (D* D*)± π∓ at √s = 4.26  GeV.

  title={Observation of a charged charmoniumlike structure in e+ e- → (D* D*)± π∓ at √s = 4.26  GeV.},
  author={M. Ablikim and M. Achasov and O. Albayrak and D. Ambrose and F. An and Q. An and J. Bai and R. Baldini Ferroli and Y. Ban and J. Becker and J. Bennett and M. Bertani and J. Bian and E. Boger and O. Bondarenko and I. Boyko and S. Braun and R. A. Briere and V. Bytev and H. Cai and X. Cai and O. Çakır and A. Calcaterra and G. Cao and S. Cetin and J. Chang and G. Chelkov and G. Chen and H. Chen and J. Chen and M. Chen and S. Chen and X. Chen and Y. Chen and H. Cheng and Y. Chu and D. Cronin-Hennessy and H. Dai and J. Dai and D. Dedovich and Z. Deng and A. Denig and I. Denysenko and M. Destefanis and W. M. Ding and Y. Ding and L. Dong and M. Y. Dong and S. Du and J. Fang and S. Fang and L. Fava and C. Feng and P. Friedel and C. Fu and J. Fu and O. Fuks and Y. Gao and C. Geng and K. Goetzen and W. Gong and W. Gradl and M. Greco and M. Gu and Y. Gu and Y. Guan and A. Guo and L. Guo and T. Guo and Y. Guo and Y. Han and F. A. Harris and K. He and M. He and Z. He and T. Held and Y. Heng and Z. Hou and C. Hu and H. Hu and J. Hu and T. Hu and G. Huang and J. Huang and L. Huang and X. Huang and Y. Huang and T. Hussain and C. Ji and Q. Ji and X. Ji and L. Jiang and X. Jiang and J. Jiao and Z. Jiao and D. Jin and S. Jin and F. Jing and N. Kalantar-Nayestanaki and M. Kavatsyuk and B. Kloss and B. Kopf and M. Kornicer and W. Kühn and W. Lai and J. Lange and M. Lara and P. Larin and M. Leyhe and C. Li and D. Li and F. Li and G. Li and H. Li and J. Li and K. Li and L. Li and P. Li and Q. Li and W. Li and X. Li and Z. Li and H. Liang and Y. Liang and G. Liao and X. Liao and D. Lin and B. Liu and C. Liu and F. Liu and H. Liu and J. Liu and Li-Yu Daisy Liu and L. Liu and P. Liu and Q. Liu and S. Liu and X. Liu and Y. Liu and Z. Liu and H. L{\"o}hner and X. Lou and G. Lu and H. Lu and J. Lu and X. Lu and Y. Lu and C. Luo and M. Luo and T. Luo and X. L. Luo and M. Lv and F. Ma and H. Ma and Q. Ma and S. Ma and T. Ma and X. Ma and F. Maas and M. Maggiora and Q. A. Malik and Y. Mao and Z. Mao and J. Messchendorp and J. Min and T. J. Min and R. Mitchell and X. Mo and H. Moeini and C. Morales Morales and K. Moriya and N. Y. Muchnoi and H. Muramatsu and Y. Nefedov and I. B. Nikolaev and Z. Ning and S. Olsen and Q. Ouyang and S. Pacetti and J. W. Park and M. Pelizaeus and H. Peng and K. Peters and J. L. Ping and R. G. Ping and R. Poling and E. Prencipe and M. Qi and S. Qian and C. Qiao and L. Qin and X. Qin and Y. Qin and Z. Qin and J. Qiu and K. Rashid and C. F. Redmer and G. Rong and X. Ruan and A. Sarantsev and M. Shao and C. Shen and X. Shen and H. Sheng and M. R. Shepherd and W. Song and X. Song and S. Spataro and B. Spruck and D. Sun and G. Sun and J. Sun and S. Sun and Y. Sun and Z. Sun and C. Tang and X. Tang and I. Tapan and E. H. Thorndike and D. Toth and M. Ullrich and I. Uman and G. Varner and B. Wang and D. Wang and K. Wang and L. Wang and M. Wang and P. Wang and Q. Wang and S. Wang and X. Wang and Y D Wang and Y F Wang and Y Q Wang and Z. Wang and D. Wei and J. Wei and P. Weidenkaff and Q. Wen and S. Wen and M. Werner and U. Wiedner and L. Wu and N. Wu and S. Wu and W. Wu and Z. Wu and L. Xia and Y. Xia and Z. Xiao and Y. Xie and Q. Xiu and G. Xu and Q. Xu and X. Xu and Z. Xu and Z. Xue and L. Yan and W. Yan and Y. Yan and H. J. Yang and Y. Yang and H. Ye and M. Ye and B. Yu and C. Yu and H. Yu and J. Yu and S. Yu and C. Yuan and Y. Yuan and A. Zafar and A. Zallo and S. Zang and Y. Zeng and B. Zhang and C. Zhang and D. Zhang and H. Zhang and L. Zhang and J. Zhang and R. Zhang and S. Zhang and X. Zhang and Y. Zhang and Z. Zhang and G. Zhao and H. Zhao and J. Zhao and Lei Zhao and L. Zhao and M. Zhao and Q. Zhao and S. Zhao and T. Zhao and X. Zhao and Y. Zhao and Z. Zhao and A. Zhemchugov and B. Zheng and J. Zheng and Y. Zheng and B. Zhong and L. Zhou and X. Zhou and C. Zhu and K. Zhu and S. Zhu and X. Zhu and Y. Zhu and Z. Zhu and J. Zhuang and B. Zou and J. H. Zou},
  journal={Physical review letters},
  volume={112 13},
  • M. Ablikim, M. Achasov, +357 authors J. H. Zou
  • Published 2014
  • Physics, Medicine
  • Physical review letters
  • We study the process e+ e- →(D* D*)± π∓ at a center-of-mass energy of 4.26 GeV using a 827  pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137±9±15)  pb. We observe a structure near the (D* D*)± threshold in the π∓ recoil mass spectrum, which we denote as the Zc±(4025). The measured mass and width of the structure are (4026.3±2.6±3.7)  MeV/c2 and (24.8±5.6±7.7… CONTINUE READING


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