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Ablikim, M. [Author]; Achasov, M. N. [Author]; Bennett, J. V. [Author]; Jing, F. F. [Author]; Kalantar-Nayestanaki, N. [Author]; Kavatsyuk, M. [Author]; Kloss, B. [Author]; Kopf, B. [Author]; Kornicer, M. [Author]; Kuehn, W. [Author]; Lai, W. [Author]; Lange, J. S. [Author]; Lara, M. [Author]; Bertani, M. [Author]; Larin, P. [Author]; Leyhe, M. [Author]; Li, C. H. [Author]; Li, Cheng [Author]; Li, Cui [Author]; Li, D. M. [Author]; Li, F. [Author]; Li, G. [Author]; Li, H. B. [Author]; Li, J. C. [Author]; [...]

Observation of a Charged Charmoniumlike Structure in e+e−→(D∗D¯∗)±π∓ at √s=4.26 GeV

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  • Media type: E-Article
  • Title: Observation of a Charged Charmoniumlike Structure in e+e−→(D∗D¯∗)±π∓ at √s=4.26 GeV
  • Contributor: Ablikim, M. [Author]; Achasov, M. N. [Author]; Bennett, J. V. [Author]; Jing, F. F. [Author]; Kalantar-Nayestanaki, N. [Author]; Kavatsyuk, M. [Author]; Kloss, B. [Author]; Kopf, B. [Author]; Kornicer, M. [Author]; Kuehn, W. [Author]; Lai, W. [Author]; Lange, J. S. [Author]; Lara, M. [Author]; Bertani, M. [Author]; Larin, P. [Author]; Leyhe, M. [Author]; Li, C. H. [Author]; Li, Cheng [Author]; Li, Cui [Author]; Li, D. M. [Author]; Li, F. [Author]; Li, G. [Author]; Li, H. B. [Author]; Li, J. C. [Author]; [...]
  • imprint: APS, 2014
  • Published in: Physical review letters 112(13), 132001 (2014). doi:10.1103/PhysRevLett.112.132001
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.112.132001
  • ISSN: 0031-9007; 1079-7114
  • Origination:
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  • Description: 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 Z±c(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) MeV, respectively. Its production ratio σ(e+e−→Z±c(4025)π∓→(D∗D¯∗)±π∓)/σ(e+e−→(D∗D¯∗)±π∓) is determined to be 0.65±0.09±0.06. The first uncertainties are statistical and the second are systematic.
  • Access State: Open Access