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Ablikim, M. [Author]; Achasov, M. N. [Author]; Bennett, J. V. [Author]; Jiang, X. S. [Author]; Jiao, J. B. [Author]; Jiao, Z. [Author]; Jin, D. P. [Author]; Jin, S. [Author]; Johansson, T. [Author]; Kalantar-Nayestanaki, N. [Author]; Kang, X. L. [Author]; Kang, X. S. [Author]; Kavatsyuk, M. [Author]; Bertani, M. [Author]; Kloss, B. [Author]; Kopf, B. [Author]; Kornicer, M. [Author]; Kuehn, W. [Author]; Kupsc, A. [Author]; Lai, W. [Author]; Lange, J. S. [Author]; Lara, M. [Author]; Larin, P. [Author]; Leyhe, M. [Author]; [...]

Observation of e+e−→γX(3872) at BESIII

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  • Media type: E-Article
  • Title: Observation of e+e−→γX(3872) at BESIII
  • Contributor: Ablikim, M. [Author]; Achasov, M. N. [Author]; Bennett, J. V. [Author]; Jiang, X. S. [Author]; Jiao, J. B. [Author]; Jiao, Z. [Author]; Jin, D. P. [Author]; Jin, S. [Author]; Johansson, T. [Author]; Kalantar-Nayestanaki, N. [Author]; Kang, X. L. [Author]; Kang, X. S. [Author]; Kavatsyuk, M. [Author]; Bertani, M. [Author]; Kloss, B. [Author]; Kopf, B. [Author]; Kornicer, M. [Author]; Kuehn, W. [Author]; Kupsc, A. [Author]; Lai, W. [Author]; Lange, J. S. [Author]; Lara, M. [Author]; Larin, P. [Author]; Leyhe, M. [Author]; [...]
  • imprint: APS, 2014
  • Published in: Physical review letters 112(9), 092001 (2014). doi:10.1103/PhysRevLett.112.092001
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.112.092001
  • ISSN: 0031-9007; 1079-7114
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: With data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies from 4.009 to 4.420 GeV, the process e+e−→γX(3872) is observed for the first time with a statistical significance of 6.3σ. The measured mass of the X(3872) is (3871.9±0.7stat±0.2syst) MeV/c2, in agreement with previous measurements. Measurements of the product of the cross section σ[e+e−→γX(3872)] and the branching fraction B[X(3872)→π+π−J/ψ] at center-of-mass energies 4.009, 4.229, 4.260, and 4.360 GeV are reported. Our measurements are consistent with expectations for the radiative transition process Y(4260)→γX(3872).
  • Access State: Open Access